Can convection be used to drive a passive dehumidifier?

Ok, I have a couple of radiators and a greenhouse that is too humid. In winterr can convection drive fluid from a radiator mounted low in the warm greenhouse to a second radiator mounted outside in the cold and then back to create a chilled metal radiator that will have water condense on it and drip into the soil.

Posted by drewgrey 7 years ago


insulating radiator cover

I'm looking for suggesting for upping the r-value on top of my radiator. Every window in my apartment has a radiator underneath it. I'd like to have some plants by those windows ('cause y'know, they need light and all) but I'm concerned about heat from below drying & killing the plants. A couple of the radiators have covers, but they're metal, so no insulation there. Ceramic pots may provide some insulation, but I'd really like to lay down a layer of some kind of building insulation proper just to be safe. The question is, what kind? Batting won't work, and the foam insulation panels I've seen at the hardware store I know are a fire hazard... plus not too fond of plastic-type materials. My dad suggested something he called "thermal block" which I believe is aerated concrete panels, but which I can't find a source to purchase. I'd like to spend less than $20, preferably less than $10 on this. Please help!

Posted by timeismine 9 years ago


how do you flush a radiator??

I cant find a instructable for this one, how do you flush your radiator???

Posted by frenzifun 10 years ago


Steam radiator made of copper pipe?

I have an old house that uses steam heat and has big, single-pipe, cast-iron steam radiators.  I wanted to replace one of them with something modern looking, and one company sells such radiators, but they are very expensive (sold here http://steamradiators.com/) My question is, can I make one of these  out of large (1.5" or so) diameter copper pipes, soldered together in the same fashion?  I've read that steam systems typically operate at 1psi of pressure, which sounds like it's well below the safety limit of copper pipes and solder joints. I think it would look fantastic, but would it work?

Posted by mhj555 8 years ago


Innovative solar powered radiator - will it work?

Ok, so i live in a rented flat (apartment) in London UK. Its a small flat but its old and doesn't have a gas heating system so i'm stuck using expensive electricity especially as the windows are single glazed and winter is on the way! Brrrrr! I desperately need a cheap and effective heatsource Now I know solar water heaters can be suprisingly effective even in the cold and that got me thinking. I have a south facing garden. Couldn't I use the sun to heat the flat? Specifically, I was thinking, can I use a solar water heater to heat an insulated water tank, then use the tank to heat a radiator after dark? (See diagram below) Bear in mind in temperature during the day at the moment is 11 degrees. Will enough heat be generated to make the system viable? I.e. will the water heat the tank hot enough during the day to keep the room warmish for a evening? Other pressing questions: Do i need a commercial panel or will an instructables model work? Oil filled radiator or water filled? Will it auto-siphon or will i need a pump? cheers a million guys and gals!!!

Posted by Tassle 10 years ago


Dentist radiation chart

Living in a rock or brick house exposes you to 700 times the radiation as eating a single yellow banana ! A BBC chart shows a banana as 0.1 radiation units and rock/brick homes as 70 radiation units and flying a trans continental aircraft is much worse in exposing you to radiation...

Posted by iceng 1 year ago


Heating Control

I have been thinking for some years now that I would like to have finer control over my central heating. The problem Now we are older we feel the cold more so in winter the heating is on all the time. This means that we have to keep altering the thermostat on each radiator at different times of the day or just leave them and so waste energy. One method means wasting energy but the other means rooms will be colder than we want initially.   The system and what i have We have a combination boiler which has a digital timer and also on the panel are temperature controls for hot water and radiator temperature. Each radiator has a thermostatic valve so each room can have it's temperature set independently. I have a computer which runs 24/7 and also a bit whacker which I can control via python code and electronics has been a hobby for over 50 years My idea I would like to have some system which would allow me to adjust each room temperature via computer control.   Possible solutions Solution 1 Fit a stepper motor to each thermostatic valve to adjust it at different times of the day/night. This would allow precise control but would be quite expensive to set up. Solution 2 Fit a small structure round each valve with a filament bulb or resistance wire in the bottom so that when power is applied to it then the temperature around the valve will rise and so the valve will close or, at least partially close. I think this would be much cheaper to implement but would have the small on-going cost of using power to the bulbs whenever the room temperature needs to be cooler that it would normally be. My initial plan Build a small structure around one of the valves with a low voltage bulb in it. It would have vents at top and bottom and so air would circulate. I have a portable digital thermometer so i could gather information and try different bulbs to see how much power would be needed and therefore what the on-going cost would be. Also try various shapes of structure to see what the effect would be.   So guys what do you think?

Posted by buteman 8 years ago


create "black body" and measure radiation

Hi i have been looking for some experiment about black body radiation how can i make a black body at home and how can i measure the black body radiation using inexpensive materials... i would like to measure plank's constant and so... i didn't find anything on the net any suggestions? thank you!

Posted by yitzik25 1 year ago


ERIC :Where are my Forum blogs about AMR Radiation Meters ?

 Eric Boss Man :  Where did they go ? 2 blogs! ???? Someone is messing with this site. Covertly if not openly . Check it out. Someone has too much access to this info.! He has a personal agenda, see his history. I told you so. FYI

Posted by triumphman 4 years ago


CFL's putting out too much UV radiation?

Our local (I think) news service has done a story about CFL's emitting too much UV radiation, You can view it here.Would you rather sit under an incandescent light or a CFL for a extended period of time?Do you think they should have warning labels on them?Do you have any other opinions on CFL's and energy saving globes?Or do you think this is all just a way to get more people to but the old incandescent bulbs?

Posted by thermoelectric 9 years ago


Using Neutron radiation from Aluminum foil is this Legal to do?

I am wondering if I expose plants to Neutron radiation and carefully burn them afterwords.at 500 deg C is this safe and more importantly is it Legal?? I plan to use a 4% thorium Rod (Welding Rod). What about Beta and gamma radiation is this Legal. I heard on youtube it is as long as you Properly dispose of the seeds.  I did a similar Project with clover a few cm away from a total of 20,000 volts 35 mA power supply and dosages above 400 volts per meter squared killed the clover plants very quickly. I sterilized the soil and seeds with bleach and incinerate it with High heat 500-600 degrees C. I washed by draining most of the bleach out of the seeds.

Posted by SHOE0007 11 months ago


Wood Stove feeding radiators

Hi, I'm hear again with a completely different question. Again, any help is greatly appreciated :) I installed a wood stove last year, and I'd like to install a coil to heat water and circulate it through my existing radiator loop. I was wondering if I could do it as in the image, I would install a new pump to circulate the water. I have a combination boiler, but I'm sure that doesn't really matter. The green circles in the diagram are to illustrate taps, that way I can close off the boiler when I have the stove on and vice versa.

Posted by dimmaz88 5 years ago


Do i have to worry about being exposed to radiation??

Hey does anyone know if im in trouble from being around an open but unplugged microwave...ive already removed the transformer and the capacitor...

Posted by GrowthAndDevelopment 10 years ago


room thermostat

First things first notice: Iam in Europe so it's probably a bit different than in USA. I have electric radiator in my room. i bought thermo switch but i don't know how to connect it between the socket and the radiator. I must mention that the radiator had already same thermo switch before but it broke down after 5 years and I didn't write notes how it was connected. I already blown 4 fuses during the attempt. The wire has three wires: blue ("live"), brown and yellow/ green ("earth"). In the switch there's sheme sticker -> www.shrani.si/f/C/Nr/42sKtVVC/thermo.png . so how do i connect the plug and the radiator??  www.imit.it/dati/schedaArticolo.php

Posted by Karletto555 8 years ago


Cell phone radiation boosts brain cell activity in brand new study

Brain cells are impacted by cell phone radiation in accordance with a recent study. The study detected an increase in the metabolism of brain cells. Brain cells were affected in the part of the brain near the antenna of the mobile phone. Brain cells are definitely impacted by cell phone use, according to the research, however further research is needed to discover out if that's a bad thing. Source of article - Cell phone radiation increases brain cell activity in new study by MoneyBlogNewz. Cellular phone brain cell research first done The first research undertaken to examining how electromagnetic radiation from cell phones impacts brain cells was published in the Journal of the American Medical Association on Tues. The research focused on how cellular phone use affects normal brain cell function, known as glucose metabolism. The rate of glucose metabolism in brain cells was increased more than researchers were hoping with cell phone exposure. When it comes to brain activity, the way it's done is with cells creating energy. This is done with glucose. The way brain cells work is that it is produced as necessary. The glucose is produce whenever it is needed by the brain. It's unknown if it's bad or not, however it was found in the study that glucose metabolism amounts are increased artificially with a mobile phone. Further research needs to be done though. How mobile phones affect the brain With all the phone calls going on, cell phone radiation has concerned medical experts. They have worried about what it's doing. The outcomes of previous tests have been inconclusive. A connection with brain cancer was found in famous cellular phone radiation studies. The proof that brain cancer was actually brought on by mobile phones in cell phone users was not there though. There are other things scientists have tried to ling cell phone radiation to. Such things as cancer or dementia due to brain cell mutation are examples. The effect of cell phones on children's brains has been a particular concern because children have thinner skulls, the radiation penetrates deeper and their brain cells metabolize glucose faster. Try to choose speakerphone In a statement responding to the cellular phone brain cell research, the Wireless Association said scientific evidence proves that cell phones, used within limits established by the Federal Communications Commission, don't pose a public health risk. The way cellular phone radiation affects the brain is nevertheless unknown really. Until more research is done, experts suggest Bluetooth earpieces and speakerphone should be used as often as possible. Information from CNN cnn.com/2011/HEALTH/02/22/cell.phone.brain.activity/ Web MD webmd.com/brain/news/20110222/cell-phones-affect-brain-but-does-it-matter?page=2 Wall Street Journal online.wsj.com/article/SB10001424052748704071304576160652541652440.html

Posted by InigmaN 7 years ago


Ionizing vs. non-ionizing radiation, units, and safety (updated)

Note: This was originally intended as a reply in the Americium-241 Science forum topicWhen people talk about "radiation," they are referring to many different things, and are probably thinking of some things that don't even apply. "Radiation," the invisible energy given off by radioactive materials, can be either "subatomic" particles or electromagnetic. The most common particles emitted are "beta rays," high-energy electrons, and "alpha particles," helium nuclei. Some sources can emit neutrons, protons, or "positive beta rays" (anti-electrons, or positrons), but those are much less common.The units we use to measure radioactivity are becquerels (Bq, decays per second) or curies (Ci, 3.7 x 1010 decays per second). Since the effects of radiation depend on their energy, another unit of interest is absorbed dose, the energy deposited per unit mass of target, measured in grays (Gy).Safety experts classify radiation into "ionizing," meaning there is enough energy to knock electrons out of atoms or molecules, and "non-ionizing." Infrared and ultraviolet light are non-ionizing, as are neutrons. Alpha particles (helium nuclei), beta particles (electrons) and gammas (as well as lower energy X-rays) are all ionizing radiation. The three have substantially different effects on biological systems, even at the same absorbed dose. Consequently, for radiation safety purposes, scaling factors are applied to produce numerical measures (sieverts, Sv) of "effective" or "equivalent" dose, that can be compared across different kinds of sources.Here's a small table with information for some commonly encountered sources. Isotope Source Activity Dose rate Am-241 smoke detector 35 kBq (1 µCi) 11 µSv/yr @ 1m Te-99m MRI contrast 740 MBq (20 mCi) 1.6 Sv/hr @ 1cm C-14 atmosphere, body 0.23 Bq 10 µSv/yr K-40 bananas, body 4.4 kBq 200 µSv/yrWhat you should see clearly from this is that the natural radioactivity in your body is comparable or larger than that in a common smoke detector. At SLAC, the limit for exposure to sources at the lab by most staff (including me) is 20 µSv/yr (5 mrem).As I noted above, neutrons are sometimes lumped in with ionizing radiation in non-technical "radiation safety" classes (we call them "the photon is your friend" training :-). That is not really accurate -- neutrons don't interact with electrons(*), and so cannot ionize directly. They can interact with hydrogen nuclei (protons), knocking them out of complex organic molecules, and leave behind ionized fragments and free radicals. The can also be absorbed by otherwise stable nuclei, making them radioactive; those new nuclei may in turn give off ionizing radiation.Neutrons lose energy much more slowly in passing through material, and so can penetrate much farther than ionizing particles or gammas. The nuclear interaction [http://en.wikipedia.org/wiki/Cross_section_(physics) cross-section] is much more important here than dE/dx (ionization) energy loss. Materials rich in carbon and hydrogen (for example, paraffin) are far more effective at neutron shielding than dense metals like lead.(* for the expert readers) Yes, there is n-e scattering through W and Z exchange, but the cross-section and energy scales are completely irrelevant to this discussion.

Posted by kelseymh 9 years ago


peltier device air con

Hey guys I am working on a project, my first, and am wondering if any one is willing to offer advice. the simple setup uses a swamp cooler to blow cold air over a radiator. the radiator cools down water that is connected to a peltier.if my theory is half accurate (which at best it is) I should be able to make the peltier quite a few degrees below the ambient temperature.

Posted by plucas1 4 years ago


My Project For The New Year

I think I've found a nice big project to undertake for 2009. I want to build a homebrew X-ray machine. I've done a little bit of research and found that United Nuclear sells X-ray tubes along with radiation safety equipment. I think I could make the other components needed (high voltage supply) by myself. Does anyone have any ideas or thoughts on this project?

Posted by Gjdj3 9 years ago


X-ray Lamps, the perfect light for any radiation loving geeks!

Well, who here doesn't think that x-rays look cool? I personally digg them.So check out these cool designer x-ray lamps! Engadget informs us that, Unfortunately, these lampshade / lights aren't yet available to purchase -- another dream dashed by cruel reality.I however say we will not miss out! so, i think if someone was to get a picture of a bulb, put it through photoshop to make it look like an x-ray, print it out on some paper, stick inside a custom light enclosure, and there you go. A fancy x-ray light.

Posted by gmjhowe 10 years ago


solar energy using photons

 (( the opposite of gravity is radiation . there for light is radiation . which cary photons . now if you have a turbine in a vacume filed with a gas (mecury )the photon will heat the gas making a presusre that will turn the turbine but i was thinking. add a denamo to the shaft insde the vacume . when mecury heats it expands .at lest try to make 12 volts add a capsitor -to gel batteries -  transformer from 12v to 120v now modify the transistor to make 220 . havent found any info online.at longest there is light from the moon or the sun it will work. ive discused this with enginerr they think this might just work . all the variables are here any sugestions fell free to ask  

Posted by jalvarez15 7 years ago


conwerting a laser

I have a guide line laser want to convert to laser cuter if it is possible need help the laser is CARTER MODEL#LGL-100S SERIAL#573 MFD JAN 1982 THIS LASER PRODUCT COMPLIES WITH DHEW/BRH RADIATION PERFORMENCE STANDARDS 21CFR SUB-CHEPTER J 120VAC

Posted by drgeorge 9 years ago


Have we see the event horizon of the Galactic black hole?

A preprint submitted to the Astrophysical Journal (Ap.J.) last week makes a compelling case for conclusive observational evidence for an event horizon at the compact object Sagittarius A* (Sgr A*) at the center of the Milky Way galaxy. Recent observations with mm radio waves have determined Sgr A*'s mass , distance and diameter (Nature 455, p.78), which make it "very likely" to be a black hole, unless there is some sort of exotic physics leading to a compact, but still extended and visible, object at that location.This new paper uses very general arguments from energy conservation and radiative efficiency to demonstrate that it is "impossible" for the object at Sgr A* to have a visible surface onto which accreting material collects and radiates. While the authors go through calculations in standard General Relativity for demonstration, their results hold much more broadly than that, covering any gravity theory which includes stationary solutions (i.e., horizons).If there is an object with a real surface at Sgr A*, then all the material falling in must either give up it's full potential energy into radiation as it is falling, or we should see a separate, thermal spectrum from the surface of the object itself. The Sgr A* spectrum is extremely non-thermal; any thermal component is less than 0.4% of the total luminosity we see. That is equivalent to saying that the accretion efficiency (how much radiation you get from the falling material) must be at least 99.6%, compared to the actual efficiency estimated at 0.01 to 1% for Sgr A*.On the other hand, a "horizon" by definition is a position in space "below" which photons just can't get out. Material can fall through a horizon with no difficulty, but we will never see it, or any radiation from it, again. Whether there is a black hole or some other exotic object inside the horizon, it is invisible. The accreting material's luminosity may well be "low" (as observed); the rest of its potential energy is "lost" to our observation when it falls through the horizon.

Posted by kelseymh 9 years ago


Need a detailed guide about Solar Energy

Can someone share in detailed about Solar Energy? I want to know in detailed about these solar topics likes- Sun's Energy Supply, Photovoltaic and about sun radiation. Please share in detailed so that I can clear my doubts. Thanks

Posted by AlexanderK11 3 years ago


pipe bending

Hi,this whisky9,the question i have is how to bend (2inch)pipe less then 70degrees radius,I want to build a fireplace radiator and back wall of my fireplace is angled to the front at 70degrees,the only way i can figure how to do this is to cut small sections of pipe and gradually make the bend,any other ideas would be welcomed,thank,s whisky9

Posted by whisky 11 years ago


Where can I buy myself a steel drum

I'm looking for a steel barrel/drum thing for a project I plan on doing. It's basically a pool heater, using an old car radiator and steel drum. But anyways... I have no idea where I can find one, where carries them or anything of the sort. I'm in central mass if that helps.

Posted by cvxdes 10 years ago


Selectively magnetized (hemi)sphere

Hi everybody! I'm looking for a way to construct a hemisphere, - maybe 1.5" to 2" in diameter - ideally with no moving parts - where any of a number of areas on the surface could be magnetized at will I thought of having an array of tiny electromagnets starting from middle and radiating to under the surface, but frankly, that would take a long time, and I figure there would be insulation issues. Any suggestions?

Posted by drmab 4 years ago


Peltier dehumidifier

I hope someone with a technical background can help me with this... I am trying to make an DIY dehumidifier. The goal is to lower the humidity of my room during the summer months (humidity is around 70% at 25C) to less than 50, preferrable 30%. I have the following setup in mind: To achieve condensation I want to use a peltier that will lower the temperature of an radiator. The condensed water will be gathered in a (plastic) box. This water will then be used to cool the hot side of the peltier, using a water block and a waterpump that was left over after using watercooling on my PC. The image depicts an simple graphic of the setup. However, I have the following questions to be answered: - How cold (relative to the ambient temperature) would the cold-side radiator have to be to get optimal condensation - How much watts of cooling power would the peltier need in order to achieve the needed temperature difference - If i lower the cold side temperature with 20C, how much heat would be generated on the hot side? (my gues: 20C, but im no genius ;) ) Thanks in advance!

Posted by pelzinga 5 years ago


wireless tachometer

We aim to do a miniproject -- contactless tachometer. using the principle of receiving the electromagnetic radiation emitted from the spak ignition engines using an antenna. the signal is ampliflied,filtered ,converted to pulses.using an ADC it is then converted to digital form , then counted and by making use of a lookup table,we aim to display the rpm using 1line 16 character alphanumeric display.PIC microcontroller is used for ADC,pulse counting ,storing lookup table and display interface.kindly post ur suggestions regarding this project..{{{}}}

Posted by jaas 11 years ago


How to make a Geiger Counter?

Ok so I just read the book "The Radioactive Boyscout" and I am now interested in making a geiger counter. How would I go about doing this? I mean I am pretty sure gas is used somehow to measure radiation and such but how is it done? It cant be that hard can it? and where and what could I test it on, I was thinking possibly an old radium clock maybe ? HELPZ

Posted by jackillac92 10 years ago


make your own black light ideas

So in order to make a black light i (the stupid half of me) would think to dip a lightbulb in black paint. i (the smart half of me) would assume there is more to it than that here is some random 2 facts about the blacklight (wood's light) it is not black its a deep-bluish-purple what a blacklight emits is: lamp emitting electromagnetic radiation my question is how could i make one and would it be cheaper to make it or buy it...

Posted by ich bin ein pyro 10 years ago


POWERING ATOMIC REACTOR CLOCKS:LASER SOLAR PANELS:USE LASER LIGHT NOT SUN

USING LASER SOLAR PANELS(NOT SUN LIGHT LASER LIGHT) INSIDE ATOMIC REACTOR COULD MAKE REACTOR FIRE SAFETY WITH USING FIBER OPTICS THAT HOLD LIGHT ENERGY TO TRANSFER ENERGY IN AND OUT OF ANY ATOMIC CLOCK: FIBER OPTICS CAN MOVE LIGHT THROUGH ANY BEND OR SMALL TO REACH PLACES AND THEN TRANSFER ITS LIGHT TO ENERGY WITH THE FOLLOWING IDEA. BY SHINING LASERS ON SOLAR PANELS THAT ARE INSIDE ATOMIC AREA DEVICES TO GIVE THE PANELS ELECTRICITY FOR REACTOR CLOCK AND REPLACING ALL DANGEROUS WIRES THAT SEND ELECTRICITY TO ATOMIC PARTS OF NUCLEAR PLANT. WITH NEW FIBEROPTIC WIRES TO SEND PHOTOVOLTAIC WIRES THAT SEND ELECTRICITY WITH LASER LIGHT. VERY SAFE COMPARED TO WIRES THAT WHEN CUT MAKE SPARKS OR FIRE. FIBEROPTIC WIRES ARE SAFE IF CUT ONLY NON DANGEROUS LIGHT WILL BE LOST. AND COULD REDUCE RADIATION FROM CROSSTALK THAT COME FROM REGULAR COPPER WIRES. One more idea can you charge a solar panel battery recharger by shinning laser beam on the solar panel cells in places were there is no sun light using laser light which can charge a device from a range of up to a football field if needed. This might be used in caves or evenin drilling for in off shore oil rigs were there really is no light in deeper water. And all other light sources of light would be distortedby reflection from the water. Only a laser beam could recharge aelectronic device by using photovoltaic in deep water where sundon't shine and only a laser will not have all of its light reflectedbecause of the water's reflection property, you would only be able touse laser light properties has less water reflection than normal light. BY HUME SCIENCE INTERNSHIP FIBER OPTICS TO SEND LIGHT INSIDE ANY TYPE OF ATOMIC AREA AND CONVERT IT ONCE INSIDE CORE INTO ELECTRIC POWER AND SAFELY DECREASING RADIATION PROBLEMS. THIS IS GOOD BECAUSE LESS COPPER WIRES ARE NEEDED.(ONLY LIGHT WOULD BE TRANSFERED IN CASE OF WIRE IS CUT ONLY LIGHT WILL ESCAPE MUCH LESS DANGER. USING FIBER OPTICS TO SEND LIGHT ENERGY ONTO SOLAR CELLS INSIDE REACTOR/THIS IS A GOOD SAFETY TOOL BECAUSE IF FIBER OPTICS ARE CUT ONLY LIGHT WILL BE EXPOSED AND NOT DANGEROUS ELECTRICITY WHICH WILL CAUSE RADIATION PROBLEMS. TO SEND ELECTRICITY INSIDE THROUGH OUT REACTOR//: INSIDE ATOMIC RADIATION AREAS. THERE ARE NO NEED FOR ELECTRIC WIRES. IF ELECTRICITY IS MADE INSIDE REACTOR CORE, BY SHINING INFARED ON SOLAR CELLS OBJECT NOT SUN LIGHT ONLY INFARED LIGHT ON THEM PANELS. THIS LIGHT HAS TO BE LASER OR INFARED BECAUSE IT CAN BE CONTROLLED USING INFARED LIGHT THIS ALLOWS IT TO BE MORE CENTERED THAN SUN LIGHT CAN. REDUCING ATOMIC RADIATION IN ATOMIC REACTOR CLOCKS. AND NOT USING WIRES. A ATOMIC REACTORS CORE CLOCK HAS TO GET ELECTRICITY. THIS CAN BE DONE WITH SOLAR PANEL CELLS PLACED AND CONNECTED TO THE CORE'S CLOCK. THEN BY SHINING LASER LIGHT OR INFARED LIGHT ON SOLAR PANELS THAT ARE INSIDE THE CORE CAN GIVE AND GET THE LIGHT ENERGY POWER IT NEEDS TO RUN TRANSISTERS AND COMPUTER CHIPS. FROM SOLAR PANELS THAT ARE CONNECTED TO THE CLOCK INSIDE THE CORE. AND ARE BEING GENERATED BY CONTROLLED LASERS THAT ARE ALLOWED TO BE AT VARIABLE DISTANCES. CAN ELECTRICAL ENERGY BE TRANSPORTED BY A LASER. SURE JUST SHINE IT ON THE SOLAR PANEL AT NIGHT AND YOU WILL GET A LITTLE ENERGY, SURE IT WORKS. CAN A ATOMIC REACTOR GET ITS ENERGY VIA LASER LIGHT INSTEAD OF WIRES DOING THE TRICK. NOW WITH LASER OR FIBER OPTICS. WIRELESS ELECTRICITY CAN BE SENT WITHOUT WIRES.ELECTRICAL WIRES COULD BE THE PRODUCER OF STATIC RADIATION. WIRES DO SEND ENERGY INSIDE THE CORE AND GIVES ENERGY FOR THE CORE'S REACTOR. CAN THIS IS ALL DONE WITH NO WIRES INSIDE THE CORE; IF WE ALLOW ENERGY TO BE SENT VIA LASER LIGHT TO A CONVERTER OF SOLAR PANELS COULD CREATE ELECTRICITY IF THOSE SOLAR PANELS WERE DIRECTLY SHINED ON TO BY LASERS. A GREAT DEAL OF WIRES COULD NOT BE NEEDED. SENDING POWER TO CORES WATCH OR CIRCUITS IS POSSIBLE. BY SHINING A CONTROLLED LASER ON THE INSIDE OF A CORE'S SOLAR PANEL CAN BE ACHIEVED BY FEEDING THE SOLAR CELLS INSIDE THE REACTOR WITH LASER PHOTO ENERGY LASERS WOULD SIMPLY SHINE ON INTERIOR REACTOR SOLAR CELL COMPONENTS. ONLY DIFFERENCE IS INSTEAD OF SUN LIGHT CREATING THE ENERGY IT WILL BE A HIGH POWERED LASER SHINING ON THE PANEL SOLAR CELLS. USE LASER LIGHT WHICH IS MORE DIRECT AND IS MORE FOCUSED OVER A LONG DISTANCE. LESS RADIATION AND LESS WIRE WASTE IS THE FINAL RESULT. HAVE A GOOD CLEAN DAY. THIS IS A NEW FORM OF TRANSFERING ELECTRICITY TO EXTERNAL LOCATION. USING FIBER OPTIC LIGHT AND SENDING IT AND THEN RECIEVING IT ACROSS A DISTANCE WITHOUT WIRES. THIS SEEMS SAFER TO ME BY USING THIS METHOD. REMEMBER THIS; WE ARE NOT USING SUN LIGHT IN ANY OF THESE METHODS ONLY LASERS OR FIBER OPTICS. THIS IS INFORMATION FROM A SCHOOL PROJECT OF MINE AND IF YOU CAN GIVE MORE ON THIS SUBJECT PLEASE DO. PLACING SOLAR PANELS INSIDE BUILDINGS NOT JUST OUTSIDE, AND CAPTURING OFFICE LIGHT 24 HRS MORE PROJECTS THAT I WOULD LIKE TO EXPERIMENT A INTERNSHIP WITH! PLACING SOLAR PANELS INSIDE BUILDINGS NOT JUST OUTSIDE, AND CAPTURING OFFICE LIGHT 24 HRS

Posted by humexavier 10 years ago


New Topic Not Showing UP ?

This probably won't show up someone is filtering out my forum topics! I posted many. No way to find them in : Burning Questions or Community Blog. The topic is : AMR ELECTRIC METERS - radiation poisoning people, etc... Can not find my blogs. Can you look into this administration people, bug fixers ! There are people on your staff who have an agenda that is working against peoples forum answers and questions. You know who he is. He is not from the USA. Check out his activities for yourself. Something is covert and not right with his interferance and deletion of blogs and personal agendas. Thanks.

Posted by triumphman 4 years ago


What would you do with a Deuterium Lamp?

I was going through a box of junk a University Lab wanted to get rid of and I pulled out a Deuterium Lamp. This small thing produces a steady blue-green light as powerful as a camera flash, but most of the light these things create is in the UV Spectrum. I Feel like I must make something with this. My First thought is to block the UV so I don't blind anyone and turn it into a bike light, but I already have an epic 300 LED bike light. Can anyone think of a good application for a powerful source of UV Radiation?

Posted by kramerr 9 years ago


Homica - The remote-controlled 'smart house' using Arduino, iPhone and Apple Watch

Homica is a project that thanks to a smart web platform allows to control in a remote way (using an iPhone and Apple Watch) sensors and actuators installed on the Arduino boards. Homica not only allows to monitor our home in all its aspects through a multitude of sensors but also to perform actions on the whole installed actuators. Moreover, Homica is able to execute actions as results of events. This logic will be called "Homica Profile". Below there are just few examples of "Homica Profiles" that can be created using Homica. If we are not at home and we want that the acustic alarm is activated and all the lights goes on and an email is sent when a motion sensor detect the presence of someone in the house. If our garden has an humidity below a certain value, then we have to water it until the soil humidity will be a specific value. If we want to be notified by email if there is a gas leak. If we want that a number of lights goes on if we clap our hands once and we want to turn them off if we claps twice. If we want that all the lights or some goes on or off with a simple action. If we want that some lights goes on if a motion sensor detects a motion. If we want that some lights goes on when night comes and off when becomes day. If we want that an electric kettle and some lights goes on at a specific hour The most interesting aspect is that we can create all the profiles we need directly using the iPhone application called "Homica Remote" without any Hardware changes.   Complete Project Video https://youtu.be/s520dv2i9Rg Remote controlled by an Apple Watch Video https://youtu.be/ZwCsdlMXShk Remote controlled by voice (Speech Recognizer) https://youtu.be/ixZyjLN6izU

Posted by MicheleC5 3 years ago


Making water cooled shoes need some advice about thin copper tube fittings.

Essentially i want to make water cooled shoes from some of the spares i have from my old pc water-cooling set up.  I want to run some thin copper tubing around the shoe which will connect to the some metal fittings that will then connect to my rubber tubing and then to the pump and the radiator. Now i know about the fittings that are available for the regular copper tubing that runs in houses but this tubing will be around 4mm and im not sure how to connect this tubing to my metal fittings which are about 3/8th of an inch i believe.  I was thinking to just use some epoxy putty or something but im sure there are better ways to do this. so any ideas?  im sure fittings are available but i dont know what they're called i couldn't get anything with a quick google search.  Edit: i didn't realise response here would be so thoughtful and all. I dont want to be able to walk around in these i just want to sit in my room and be comfortable. The heat difference probably wouldn't be too large between my feet and the air for a huge transfer so i also had thought to add a small water bath with a second small radiator init.  The copper tubing doesnt have to be directly under my feet i realise they'd probably be crushed otherwise. but the heat conduction through them must be so much better then the plastic tubing. 

Posted by rajr110 4 years ago


Alternative Cooling design idea – Southeast moderate to high humidity

I need some serious feedback!  I have an 1896 Victorian, about 3800 sq.ft. but we did it right. Foamed the walls, floors, all new everything; a/c upstairs(2ton) and 5 ton downstairs.  It cools fine, but it's big and with only 3 of us, we only use about 2 rooms most of the time. Practically a new home. I've was studying underground piping for cooling but I have a new though. I can not use swamp coolers because it's to humid in Middle Ga. I have a well that the water is about 49-58 degrees. If I build a box with a cage fan and use small radiators (desinged for this purpose; not auto radiators), to pass the cold well water thru, wouldn't this work to cool the air for a room or two? I would design it to use a thermostat to open a valve when the water reached about 70 degrees and have it to RETURN the water back to the well (have have an opening to do so on the well). What I'm visioning is, the air would pass a hundred or so coils with circulated cold water all the time. I understand I need to also consider humidity dropping and cycle that out. Keep in mind, I'm not talking about passing air over a wet pad. I'm leaning toward passing air over cold coils that might be as deep as 3 feet. I really would like some detailed opinions. I'll email drawing if I have to.  Best regards.  Chris - Macon Ga.

Posted by opc167 7 years ago


Radioactive lift controls recalled in France

NEW DELHI (AFP) - India's atomic safety body said Thursday that radioactive scrap metal which found its way into buttons installed into lifts in France had been traced back to a western Indian foundry.At least four Indian firms were involved in the manufacture of the components, an official said, but it was still unclear where the contaminated scrap originated."We are tracking back the whole chain," Satya Pal Agarwal, head of the radiological safety division of India's Atomic Energy Regulatory Board, told AFP."We are taking steps in each place. Exporters have been advised to buy monitors to check their materials before exporting."France's Mafelec firm delivered thousands of lift buttons to Otis, a subsidiary of the US elevator company, which installed them in at least 500 lifts in the country over the summer.Otis has said it is now in the process of removing the buttons, after France's Nuclear Safety Authority announced Tuesday that 20 workers who handled the lift buttons had been exposed to excessive levels of radiation.The French nuclear safety agency has said the lift buttons contained traces of radioactive Cobalt 60.AFP articleSteel items imported {into Sweden} from India showing faint traces of radioactivity were found in Sweden, before the same substance was traced on Indian-made lift buttons in France, officials said Wednesday.The levels of Cobalt 60, a radioactive form of the metal, were considered harmless and the steel components have not been recalled, the Swedish Radiation Safety Authority (SSM) told AFP."Dutch customs discovered that a shipment of industrial flanges from India to Sweden showed traces of Cobalt 60," SSM spokesman Mattias Skoeld said.Focus Agency feedFrench elevator maker Otis said it would remove the buttons from hundreds of lifts it has installed after a radioactivity scare over Indian-supplied materials.The company made the announcement after France's Nuclear Safety Authority (ASN) said 20 French workers who had handled buttons used in lifts had been exposed to to excessive levels of radiation.An Otis spokesman said the firm's plan to remove the buttons "concerned 500 to 600 lifts out of the 2,500 that Otis has installed, modernised or repaired between August 21 and October 9 even if there is no danger for users."The ASN classed the incident at factory of the Mafelec firm in the east-central French town of Chimilin at "Level Two" on a scale of seven because of the exposure of more than 10 people to doses exceeding the reglementary limit.SA Times article

Posted by Kiteman 10 years ago


Previewing a new Forum topic causes it to be published?

Earlier this morning, I was editing a new Forum topic ("Ionizing vs. non-ionizing radiation, units, and safety" in Physics). I hit the [Preview] button to check whether I had messed anything up. I had (missed out one of the ending quotes for a boldface bit), so I clicked on "step 1: Edit" to go back and fix it. I went through the Preview -> Publish steps again. and thought I was done.Much to my surprise, there were two copies of my topic posted! The first was the version I had previewed (above), with the mistake. The second was my final version where I actually hit the [Publish] button. I've deleted the first, of course, to avoid confusion.Should the Preview action actually generate a published entity?

Posted by kelseymh 9 years ago


GPS Repeater from a Hacked Wirelss Router?

Hi all. I'm building a GPS Repeater. I'm wondering if any one has ever tried to use the LNA on the Xmit side of a wireless router to amplify and re-radiate a GPS signal? I'm still in the research stage, but I'm thinking I can take the signal from a active GPS USB patch antenna, tie it into the LNA input on the RX side of a wireless router (hack all signals in the router- we are just interested in the power and signal input). Schematics to a router would be great. I have 10+ years in RF, so I know that the Xmit on a router is so not 1.5GHZ range like GPS. A few mods to some componets can ceratinly help turn the center freq of the Xmit. on the router.   What are your thoughts?

Posted by chris23892 6 years ago


Homebrew heaters using resistors?

Hello, First time poster! :) I've been reading up on some projects on this site centered around small homebrew heaters. One I came across I want to adapt is using two resistors and usb port power to make a small coffee mug heater. I'm kind of a novice at electronics, but I'd like to know how to design such a heater with safety and functionality in mind. I also want to control this heater via arduino if I can get a prototype together. Some questions I have: Where to get and what kind of resistors for heaters? How do I figure out what resistors to use based on power. e.g. 12v or USB power? What's a good thing to "encase" the resistors with that will withstand heat? I have thought about using radiator repair epoxy. Thanks for any help!

Posted by Sylvester2009 8 years ago


Nuclear powered throwies keep Boston on terror alert for sixth decade, seventh on horizon.

OK, so it's an attention-grabbing headline, but the potential is now there.Radio-isotope batteries (the same things that have kept the Voyager craft alive since the seventies) can hold a million times as much charge as a standard chemical bettery the same size.As radioactive isotopes decay, the charged particles they emit are trapped by semiconductors and turned into useful current.  Past versions of the battery have used solid semiconductors, which suffer damage from the radiation, so need to be large to survive as long as the isotope.  Now, a team from the University of Missouri has developed a liquid semiconductor that can survive the damage whilst having much less bulk, and have put together batteries the size of a coin.  They are working on much smaller versions, capable of powering micro- or nano-scale devices.Just imagine the possibilities...University of Missouri - Nuclear battery linksBBC Story

Posted by Kiteman 9 years ago


Question regarding colour

Hi everyone! So here is another confusion in my mind.  I know that colours are a result of electromagnetic radiation in the visible spectrum interacting with our eyes.  The visible spectrum consists of 7 colours, abbreviated VIBGYOR. Now my question is, what are primary colours and secondary colours? And how come mixing of two colours produce an entirely different  colour? I expected that all 7 of them would be primary. But that is not the case.  Also, for illustrating the real world scenario from which this doubt crawled into my mind, consider that i have two pieces of translucent films, one blue, and other yellow. Now initially i place the blue film in-front of a white bulb, then it filters all other colours other than blue. Now place a yellow in-front of the blue, and there, you have green. What is the working principle behind this? How come the "blue" light turned "green" after passing through the yellow film?

Posted by charmquark 5 years ago


Is it good idea to replace laptop's fan by fan of cooler pad ?

There are nasty fan inside of my laptop. The fan is loud and sound is nasty and works always (its such model of laptop), so I want to remove bottom of the laptop's corpus and may be top of the cooling pad and use the pad instead of internal cooler (which I will plug out). I have AMD. I think that it's may work because: fan inside laptop blows at radiator (which is on another end of copper pipe), not right at place where processors located. And I want big fan that will blow right at those part of cooling system where processors located. I'm not gonna remove copper pipe, just plug out default fan and use pad's instead so that it will blow at cooling system from the bottom. I'm gonna use pad with 220-250 mm fan. What do you think ?

Posted by RoS9 2 years ago


oil submerged playstation 3

Hi again iables, I want to build a oil submersable ps3 and have a few questions, 1. Will the oil degrade the silicone on a glass fish tank and cause a leak? 2. How do i extend the power and eject buttons off the motherboard? 3. How do i extend all other wires for the hard drive, power supply, bluray drive, hard disk drive and any i have missed? 4. What would be the best way to stop wicking in the wires from slowly emptying the oil? 5. Would any normal pc case cooling fans be ok to circulate the oil or would they burn out from the extra current draw? 6. Would a normal overhead fish tank filter be ok to use as a diy radiator pump? 7. Would this prevent the dreaded YLOD as iv already had it twice and fixed it myself, with relative success (about 2 months or 100ish hours), and this time im going to oven bake instead of heat gun as this method is rumoured to provide the best results, anyway i hope because of the even cooling provided by the oil bath, then it would keep it much cooler than air cooling? 8. What about using themoelectric cooling pads with huge heatsinks to provide extra cooling? 9. Would the wireless and bluetooth antenna's need to be extended or would they be ok submersed? i thought radio signals were blocked by water so is oil the same? If they do, how would i go about this? 10. Where would i buy mineral oil? I heard that Johnsons baby oil would work? 11. Could i use something similar to an undergravel filter in a fish tank to generate circulation if a pump head wont work? 12. What metal piping should i use for a diy radiator as i heard that mineral oil is very good at dissolving some things and im worried that the contamination may cause conductivity? I think that's it... if not ill add more when i think of them, many thanks in advance for any help!?

Posted by Xmortx114145 6 years ago


Feature request - authoring badges

This is a feature request to allow authors to add info/warning badges to their instructables. As an example 1. These would be icons that appear at say top left of an ible, like you have the medals on top right. 2. An author could add a maximum of three badges. 3. These would be selectable from a predefined set provided by your site. i.e. no custom badges. 4. Viewers could then also filter search results based on these badges as well. 5. Examples of badges would be things like     a. Indicate if special tools have been used or not used e.g. laser cutters, 3D printers, rotary tools, CNC etc. not every user has these.     b. Warn users about materials used e.g. dangerous chemicals (flamable, toxic, corrosive), radiation hazard, special protective gear required e.g. gas masks, this is over and above normal safety precautions.     c. warn about age inappropriate content e.g. adult only or adult supervision required. Depending on user response/requests the collection of badges could be reviewed and enhanced. Regards,

Posted by Mojo_JoJo 3 years ago


Looking for micro pump for steampunk liquid-cooled laptop tray

Anyone with an aluminum powerbook knows how scary-hot the get during a dvd rip. My solution is a steampunk liquid cooling tray. It would have a copper plate with a thin liquid reservoir just under the centre, where the processor is, with brazed copper tubes emanating outward under the tray. But to keep the tray thin, I can't take advantage of the natural upward flow of the hot liquid and I want to avoid radiators hanging out the back or sides. I figure I need a wee pump to push the liquid out to the outer edges to cool. Running off the USB of course! I've seen the one made from a phone vibrator, a pen and some tubing. That'd work, i suppose. Does anyone have any suggestions on where to find a low voltage micro/nano pump? As for the USB, I found a mini voltage converter here. I can handle the design, it's the technical (esp. electrical) aspects that make me stumble. Any help would be so appreciated.

Posted by jodybaker 11 years ago


NASA sent me a gift!

Hey guys, If you have or haven't known I've been an active participant in the NASA moonbuggy program throughout highschool. Every year NASA has a competition where schools, colleges, and universities throughout the world create moonbuggys and compete on a "moon course" in Huntsville Alabama for the fastest time (if the moon buggy even makes it across the terrain) Anyway, while I was in the competition there was a special event where you can have pizza with the "pioneers" (the archaic dudes that actually made the moonbuggy). It was an offer that I couldn't reject! So, I attended the secret meeting and we got to ask the "pioneers" questions. My question basically was: "If you had today's technology, what would you change about the moonbuggy?" I was looking for an answer that describes a superconducting hovercraft, but they instead talked about changing the radiator (lol, well it an awesome experience either way). What I didn't know was that my question was nominated for the "best question award" and they sent me a lunar rover book signed by the pioneers ( “Sonny” Morea, the project manager of all the space procedures at the time signed it. I don't know if it means anything to anyone these days, but it means somethin' to me!) Thats all. Thanks guys!

Posted by husamwadi 5 years ago


Closed system-conductive heating of pool with solar

Hi clever folks, We've been reading the Instructables for making solar hot water systems to heat a swimming pool (4000 litres) in our very shaded backyard (in Australia). We like the idea of using a coil of black poly pipe or garden hose laid out in the sun to heat up and then pumping this through the pool during the day, but the thought of bacteria building up in the pipe has struck fear in us! Sooooo....we may need another plan. I've read way too much on Legionalla and now think it would be safer to have a closed system. What we had in mind is a network of thin poly pipe either in 2D or 3D that would float (or be weighted slightly to sit in a good portion of the water "column"in the pool) and connect this to a long length of black polypipe that would receive solar heating. Obviously this would be a heating system that takes place when no one is using the pool (i.e. when the kids are at school). We'd keep a pool blanket on to insulate it too. When someone wants to use the pool, which would typically be in the evening for us, we'd remove this so-called radiator. Hopefully it would not be too heavy as the thin poly pipe network will be filled with water. Hmmm...so tempting to try it this weekend. We just would love to hear from folks that have knowledge to share on these topics. Thank you, Elise

Posted by ebb_au 4 years ago


360 submergerd in mineral oil

Well, I seen the instructable to submerge a PC motherboard in non-conductive mineral oil to cool it and brainstormed that this could be the perfect fix for my RROD problem with a early model Elite. I have drawn up plans and already found a few problems and would like some input on them. I do not expect a expert answer but I'm sure there are people out there that can make a far better assessment on this than I. 1.) Will the oil conduct and move enough heat to be more effective than fans? 2.) The case I have designed requires roughly 2.8-3.0 Gal of mineral oil and if i was to consider         circulating it through a radiator, what would an appropriate pump size be? ( gallons or liters          per min) 3.) Also I would plan on using only wireless controllers so is there a way to solder some leads       onto the sync button and maybe to an external momentary switch so I would not need access       to the MB everytime we wanted to add another player? Thank you for any help you can provide on any of these issues. Regardless I will begin work on it tomorrow as a experiment and to challenge myself. I will be making an instructable on this when it is done. And many thanks to the original author that inspired me to take it a step further. https://www.instructables.com/id/Mineral-Oil-Submerged-PC/

Posted by jf78 8 years ago


Quick and dirty parabolic dish solar concentrator design!

I do not have one.       I was hoping YOU could help me make a quick choice!   Basically I want to go to the store, buy an 8 by 4 corugated plastic sheet, cut it in petals, stick aluminum kitchen  foil to it (as few wrinkles as possible) and have as rigid a parabolic HALF dish as possible.   Then I mount it in my equatorial mount frame and test it. http://www.youtube.com/watch?v=5OqG2LesnSo   It gets a bit harder because the dish is not exactly a half. Some extends a bit past the center of the dish. Here are some of the issues and choices.  Do you cut along the corrugations or across them? Do you do petals radiating out from the center  or is it better to do the thing with cones? Like in the picture in the link http://solarcookers.ning.com/photo/cone-size-of-the-4-cones-solar-1?context=latest Cones might have a problem due to the corrugations not being in line with the shape that I make. so it might warp in strange ways. Is there an alternative to the corrugated sign plastic sheet? BUT they might work because I can guesstimate a not perfectly round dish more easily than with petals.. I think that something with a focus about 6 inches wide would be sufficient for me. It has to be rigid and light as can be too.   What can I use as umbrella splines to make it keep its shape? Thoughts and suggestions would be greatly appreciated. I might have a day off tomorrow so get those suggestions in quick as you can! Thanks Brian

Posted by gaiatechnician 8 years ago