cold explosions

I know that by adding ammonium nitrate and water the compound gets cold. so my question is by using ammonium nitrate and other then water can I use to make extream pressure build up in a short time while still being cold. this question is not for any explosive device to cause harm to anyone or thing. just wondering if a cold explosive could be possiable. thank you

Posted by pokiesmokie 4 years ago  |  last reply 3 years ago


Cold Sores

So, this topic is directed toward all of y'all out there that have cold sores, also known as Type 1 Herpes. I'm fairly sure I just got one (my second), as I tend to get one every year, and I know the symptoms. I've read through various medical websites, and have discovered many homeopathic ways to treat the sores. Mine is still in the "tingling" stage, but it won't for long. One of the methods I have tried so far is to take an ice cube and hold it with moderate pressure to the sore, until the cube melts. Afterwards, dry your skin off and dab some alcohol on the sore to disinfect, and repeat. I believe it said that this will slow the spread of the virus. Is there any truth to that? I'll be going on a 2-day field trip on Thursday, and don't want to have to constantly worry about not touching my mouth. Plus, those of you that have gotten cold sores know that they look disgusting and hurt! Basically, I'm looking for any homeopathic (like, not including medicines) remedies for cold sores. Thanks y'all!

Posted by Bran 11 years ago  |  last reply 11 years ago


Cold fusion experiment

I have reproduced some experiments on Cold Fusion. not as a source of energy but how to blend a wire of iron from 2mm with less than 2 ampere or obtain gas fuel from the water and graphite (coh4) without using dozens of amps.Do you think may be is interesting to do an instructabels to the matter? are not my nventions!I have same video of this experiment on my youtube channe http://www.youtube.com/user/alessiof76 Almost all in Italian language.. but with a little explanation also in EnglishThe power supply that i use and the experiments can be dangerous.. I would not like someone to dye !

Posted by alessiof76 9 years ago  |  last reply 3 years ago


Hot or Cold Shower

Now that it's becoming summer and it gets hotter and hotter, here's a question. Do you take a hot shower so that when you come out everything else feels cool or Do you take a cold shower so when you come out of the shower you're cool? Vote and explain!

Posted by guyfrom7up 10 years ago  |  last reply 10 years ago


Cold steel knifes

If you havent heard of cold steel knifes check them out they seem amazingly durable.i want to get more or less the cheapest knife they have i have a great folding knife (only 2.8") but some times when your camping there are somethings that only a nice straight 7" long knife can do.There cheapest knife is the Bushman its a nice simple strait edge knife. you can throw these they are hollow handled and blade heavy. but i want to know which should i get the Bowie blade or the regular one whats the big diff? Video spec'sBUSHMANSpecifications:Weight: 10.1 oz.Blade Thickness: 3/32" (2.5mm)Blade Length: 7"Handle: HollowSteel: SK-5 High CarbonOverall Length: 12 1/4"Sheath: Cordura$29.99BOWIE BLADE BUSHMANSpecifications:Weight: 9.8 oz.Blade Thickness: 3/32" (2.5mm)Blade Length: 7"Handle: HollowSteel: SK-5 High CarbonOverall Length: 12 1/4"Sheath: Cordura$29.99

Posted by i make shooting things 10 years ago  |  last reply 7 years ago


USB Cold Cathode?

Hi, I have been wondering about creating an ambient glow around the back of my iMac with a usb powered cold cathode light or led strip, could anyone help me with this? i would prefer a prefab solution that doesn't involve much soldering or modification of hardware but that stuff is not necessarily beyond my skill level. (and sorry if this is in the wrong place, its my first post :P )

Posted by awesomesquared 8 years ago  |  last reply 8 years ago


cold porcelain tree

steps to make cold porcelain tree

Posted by halla 8 years ago  |  last reply 8 years ago


A hotbed of cold fusion

I'm a sucker for fringe science. What can I say?From the BBC News Service:The long-standing debate about cold fusion is receiving new impetus at the American Chemical Society's national meeting in the US this week.Cold fusion, first announced 20 years ago on Monday, was claimed to be a boundless source of clean energy by Martin Fleischmann and Stanley Pons.Attempts to replicate their experiments failed, but a number of researchers insist that cold fusion is possible.The meeting will see several approaches that claim to produce fusion power.See the full BBC article here

Posted by randofo 9 years ago  |  last reply 7 years ago



Solar Heat in Cold Climates

Cool Energy is making a solar power and heating system that works in cold climates. Hooray!  It makes use of a highly efficient Stirling Engine.SolarHeart

Posted by whiteoakart 9 years ago


Compound Freezer too cold?

I have been looking into making liquid nitrogen and I have found one DIY method.  It uses a small cryocooler.  I wondered if it would be possible to use multiple stages of coolers like those used in a freezer.  So basically you take all the stuff off of a two or three freezers, or more, and you use them in a series to get progressively colder.  The first compresses the coolant which is then decompressed cooling the hot side of the next step down to freezing temperatures.  Is this possible with your everyday freon which is already in these systems, or do you need to get a better coolant, and will this even get cold enough to liquify nitrogen? 

Asked by jj.inc 5 years ago  |  last reply 5 years ago


Cold thermostat and temperature recorder.

Cold thermostat and temperature recorder. Good day everyone! I luckly obtained for free a freezer with a broken thermostat. I am planning to brew some lager beer, so I would like to replace the thermostat with a digital one, in order to set the temperature on 4°C / 39,2°F / 277,15K (ahah) (lager beer brewing temperature!) and to record it during the fermenting process, transfering then the data on my computer. Before I get lost through the universe of electronics, could anyone of you give me a good advice on where to look? I suppose an Arduino could do the trick, but I know almost nothing about it; so i ask you. Otherwise, I scavenged a "working", non-digital fridge thermostat, but I've just seen that it makes the freezer to get no warmer than -10°C: does anyone know if it is fixable and how to? Many thanks for the attention, and have a good day!

Asked by FrancescoC12 2 years ago  |  last reply 2 years ago


Nylon and substitutes on a cold bed

It's been some time and I made progress with Nylon. Aldi had some cheap craft glue with methanol as the solvent - this stuff works great for PLA, ABS AND Nylon. The common problem with nylon is that it has no real adhesion to anything, except cardboard and bakelite. Cardboard makes a clean up nightmare and bakelite is not always easy to find, especially not the right type. So I tried various glues, paints and primers but none was really suited for all printing needs. And the cleanup of the bed is imoprtant too as I did not want to spend hours scrubbing with acetone or similar nasty solvents. After the first great succes with the clear Aldi craft glue I checked the local 2$ shops and carft stores and found similar glueswith methanol as a solvent. Since not everyone is lucky enough to get these specials I will tell you what to look out for if you try clear craft glue: Don't buy anything that can be cleaned up with water - you want methanol or ethanol as the solvent in the glue! Do a test with the glue on something that usually does not bind well to cheap glue, like glass and blister packs. Let the glue dry and peel it off - it should be a clear film that is quite strong and barely streches when you pull it. It almost feels like hard paper. All good so far? Check if the nylon, pla or abs really sticks to it: Spread a very thin layer on a piece of cardboard and let dry. Add another, thicker layer and let dry again. Now hold it under your nozzle and extrude a bit of filament while moving the cardboard around. Let cool and check how good it sticks. In a perfect world the cool plastic should peel the papaer off with the glue. Time to prepare your print bed the same way and to start printing ;) Just use a very thin first layer and for the first layer much lower speeds than usual. I print nylon with 60mm/s and the first layer at just 25mm/s, any faster and the first layer does not look right. ABS and PLA are much more forgiving here.

Posted by Downunder35m 3 years ago


How can I generate cold plasma?

What can I use to generate cold plasma and play with it using magnets

Asked by nerd7473 6 years ago  |  last reply 6 years ago


How do you define "cold"?

Seeing as how we all live in different parts of the world, I got to wondering how y'all define "cold" and "hot", and when it is. Down here in mid-Georgia, hot is around 85-90 degrees and up, starting in late March to early April, and lasting until mid October. Cold starts at around 50-45 degrees (though I can go with shorts and a T-shirt in 20s) and those temperatures start about mid-November until early February. Anytime in-between is the perfect mellow temperatures. Just curious. Thanks!

Posted by Bran 11 years ago  |  last reply 10 years ago



ammonium nitrate and water get cold. how can i make a cold explosion

I need a chemical compound that makes extream presure in a millasectond, like an explosion but must remain cold. I know that by adding ammonium nitrate and water the compound gets cold. so my question is by using ammonium nitrate and other then water can I use to make extream pressure build up in a short time while still being cold. this question is not for any explosive device to cause harm to anyone or thing. just wondering if a cold explosive could be possiable. 

Asked by pokiesmokie 4 years ago  |  last reply 4 years ago



How to stop your fingers from freezing while walking in cold weather, besides just wearing gloves? Answered

Would wearing mittens over the gloves help. I recently realized that the more properly your head is covered, the longer it takes your gloved hands to freeze

Asked by hyacinth.persad 10 years ago  |  last reply 8 years ago


Coldheat where to get.

I read about Coldheat an alternative to soldering and i was wondering if i can get it in a store like walmart, superstore, the source by circuit city or something like that. I don't like to ordering things off the internet so yeah.

Posted by Alcreion 10 years ago  |  last reply 10 years ago


Solar Concentration?

I wonder if anyone has tried this, using either a solar cell, or joule thief powered LED in something like a torch head fitment  with a solar cell capping the end of the torch head such that the maximum amount of vsible light is falling on the solar collector and none is going any where else. Although direct sunlight may be ok to power a PV, because of local weather it could still be described as diffuse and tricky to get a constant intensity of light where it is needed. If it were possible get a gain in efficiency this way it also could mean that you are not constrained by the amount of area you need to lay out panels to catch sunlight, the collectorsand lights could be stacked vertically in enclosed units.Apparently PV'sare most efficient in the visible light spectrum which reduces concerns of radiation (UV or IR) If efficiency and power could be increased in this way small units could be joined in series or in gradually  increasing size to power requirements.

Asked by Nowandthen 8 years ago  |  last reply 8 years ago


Does running computers in cold weather damage anything?

I hav a bunch of computers but not much space, so I run some of them in an unfinished part of my house. Because this part is unfinished it gets cold, very cold sometimes down to 10-15 degrees farenheit. I just wondered if there was any way this could damage any of my computer components. I want to make sure it is OK to do this. Thanks.

Asked by nurdee1 7 years ago  |  last reply 7 years ago


I dont really want to buy a $130ground fx neon kit for my car, can i use cold cathodes for the underside?

The ground fx kit for my car would be around $130 bucks. Cold cathodes go for $6 on ebay. Can i use 6 cold cathodes and wire it into my car?

Asked by XxtwistedxX 9 years ago  |  last reply 9 years ago


How to mount Peltier elements?

A peltier is a element that gets very hot on one side, and very cold on the other side. Cold enough (with enough power) to make frost all over it. So. I got one, I want to make nice cold cold air. I read wiki, if you don't heat sink it, it will self destroy. If I heatsink the cold side, then a fan on the heat sink to blow the cold freeze air, will it be fine? Or must I cool the hot side too? Peltiers are cool :D

Posted by Killa-X 10 years ago  |  last reply 7 years ago


Blizzmageddon!!

How is everyone who lives in the path of the snow storm doing?  I hope everyone's okay.  We're in Oklahoma and the worst is over.  We've been having jammies/movie marathons laughing ourselves silly.  I think tomorrow might be warm enough for some snowman building.   Make soup, stay warm, be safe!

Posted by zurichko 8 years ago  |  last reply 7 years ago


in need of a cold burning flash pot

I have a live audio business and I am in need of a compound that will work in a flash pot that will burn cold, so that there are no possibilities of a fire.

Posted by bondo86 9 years ago


Is there a good glue that is not effected by cold temps?

The stone attached to one of my husbands tie tacks came off--it was glued on.  I think the reason it came off is that he was out in the cold a lot that day.  Does this sound reasonable?  Is there a glue out there somewhere that is not effected by temperatures? Thanks in advance!

Asked by gemjunkie 8 years ago  |  last reply 3 months ago


Cold Weather Bike Wind Deflector

So I've taken an indirect pledge not to commute to school VIA car - by not buying a parking decal... Since school started, I've commuted, by bike, nearly 400 miles. But now it's starting to get cooler. I really don't like riding in cold weather. I typically wake up cold, get ready (still feeling cold) and getting on a bike when it's cold out is pretty uncomfortable.... So, for my next ugly bike abomination accessory.... My first wind deflector fairing prototype. I made a model in SketchUp (this was my "learn to use SketchUp" project), then from that make a development drawing (3D shape to 2D cutout) and cut that out of some scrap cardboard (I've got quite a bit that I rescued). Yes, there are flaws in this design - it's my first attempt :p As of now, I need to figure out how to mount this thing. I currently have some surplus 1/4" threaded rod at my disposal, I'm going to grab some and see where it takes me :p Comments?

Posted by trebuchet03 11 years ago  |  last reply 10 years ago


Does cold harm lithium batteries? Answered

I know that Nicad batteries can be damaged from being left in the car in sub freezing temperatures.  Is this also true of lithium batteries?  I'm in a northern climate where we experience below zero temperatures so I need to know if I have to keep bringing my lithium battery packs inside every time I park the car.

Asked by etcmn 5 years ago  |  last reply 5 years ago


Cold Cathode Tube Voltage and Speaker Questions

My brother has some cold cathode tubes, some about 6" long, some about 12" or more. I was thinking of hooking them up to my bike, as shown in one of the great Instructables here, but I wasn't sure of the voltage. I don't want to over-power the tube, and bust it. Plus, the two wires coming out of it are in this black connector, so I don't know which is positive or negative. The tubes put out blue light, if that makes any difference.I have an old sports radio, which works pretty good and could be turned up really loud. I desoldered the speaker, and hooked it up to a pair of wires coming from a head phone jack. I plugged it into my iPod, expecting loudness, but no - I had to hold it up to my ear, on full volume, to hear it. Is it because the iPod isn't outputting as much voltage or current to the speaker as my radio was? The radio used 3 AA. I really wanted a portable speaker that actually put out big sound, so I didn't have to have those buds stuck in my ear.Thanks y'all!

Posted by Bran 11 years ago  |  last reply 11 years ago


Making shower water colder

For years I have been a fan of taking cold showers, especially in the winter when the water is very cold. But in the summer, the water is not all that cold. Does anyone know, any information, on how to chill the shower water?

Posted by wwlaveck 9 years ago  |  last reply 9 years ago


How do i fix this plumbing issue?

My shower throws off very little hot water. The cold water is almost shut off when I shower. I had a new hot water heater installed. The water is hot everywhere it should be except in the shower. Does anyone have any suggestions? I am obviously plumbing challenged.

Asked by luckylynnea 9 years ago  |  last reply 7 years ago


Mecho Shades - Keep heat in in winter?

We are building a 4 seasons room. Contractor recommended Mechoshades - I know they protect from sun and heat in summer, but do they keep the heat in during the winter?

Asked by polkataco 9 years ago  |  last reply 9 years ago


Temperature sensor with cool thermistor

Hi, I am trying to make a temperature sensor using a thermistor. I've made a basic circuit using an Arduino and some tutorials from this site and couple others, which works well but the thermistor heats up way too much - perhaps to about 50 or 60 degrees - but it needs to stay around room temperature for my application. I'm using a 5V output from an Arduino through a 15Ohm thermistor - am I doing something wrong? Many thanks for the help! The one I've made is almost identical to the one in this tutorial: http://www.circuitbasics.com/arduino-thermistor-temperature-sensor-tutorial/ except a different thermistor

Posted by Mickey_blu_eyes 2 years ago  |  last reply 2 years ago


How to make doppler laser cooling? Answered

I've heard of a form of cooling done by lasers known as "doppler cooling" because it is based on the Doppler effect. I think this is neat and would like to try to make a laser cooling device. I can't seem to figure out how though. I did some google research and all I get is cooling options for lasers rather than cooling options from lasers. What wavelength would you need to do this? Is there a particular way to do this rather than just shining a laser continuously at an object needing cooling. Would this work through a translucent object? I appreciate any help or guidance you could offer.

Asked by mykiscool 3 years ago  |  last reply 3 years ago


Can I etch a PCB in the winter...? Answered

I want to etch a PCB, but it is rather cold where I live. I had settled on the HCl/Peroxide mix, but I could use something else if need be. I wouldn't be worried about it, except I get the impression it's a good idea to carry out the reaction outside, where it is cold right now. If working outside in the cold is a no-go, is there any etchant that is "safe" (I understand that safety is relative, I mean along the lines not immediately gassing me) to use indoors with ventilation? If so, how much ventilation is needed? Are we talking an open window, or an industrial fume extractor? Also, I wasn't sure which category and channel would be the best, so if a mod or somebody sees this and has a better classification, go ahead and change it. Sorry for making this such a long question; I'd just like to be able to use my circuit board before I die ;). Thanks, dedgerton

Asked by dedgerton 7 years ago  |  last reply 7 years ago


Powering Peltier Plates

Hey guys,So, I just got a Peltier plate, a device that gets very hot on one side while very cold on the other. It requires 90 watts of power. I was just curious what would happen if you powered it by USB or 9v battery. I found this tutorial which uses USB, however, I doubt it gets to its maximum coolness potential. Also, if I used a 9v, would that drain the battery in a matter of minutes, or even damage the plate?Thank you.

Posted by Joe426 10 years ago  |  last reply 2 years ago


My front shocks

My front shocks are WAY too soft, i need help tightening them or making them harder, not including water. Thanks!

Posted by Yerboogieman 10 years ago  |  last reply 10 years ago


Cold Cathode lamp with SOLAR power / battery?

I have an cold cathode lamp from a scanner. I want to install it behind a piece of artwork i made to sort-of backlight the image. it can be very dim... i don't need to get full brightness out of it. My question is.. do you think this is possible with a solar panel and rechargeable pack of some sort to dimly light this thing???? I really want to use solar on this, due to the nature of the piece itself. Any ideas on watts or volts or any other input??? On the power input for the scanner itself it reads 16VDC 0.9~1.0A... if that helps. any help or suggestions are welcome!!! thanks !

Posted by fleanine 10 years ago  |  last reply 10 years ago


Toyota corolla DIY Cold Air Intake

So i have this idea, my car came stock with cold air intake, but i want to take it a little farther and do a Ram air intake (the air gets shoved in the car as you drive) what kind of tubing should i use? i have this plastic kind of dryer tubing and some pipe rings (adjustable) would that work? or should i use metal dryer tubing?

Posted by Yerboogieman 10 years ago  |  last reply 7 years ago


Laptop LCD Cold Cathode re-use

So recently, an old laptop of mine died. It was an old dinosaur of a laptop, slowly running down the remaining years of its life. Then it died. So sad. To honor its death I dismantled it. I got an interesting motherboard, some decent speakers, a 5gb harddrive along with a floppy and disk drive. What really interested me the most though is the LCD screen. At first I hoped that I could re-used the screen as a tertiary screen for my desktop, but later I realized the near-impossibility of this task and gave it up. Instead I chose to take the screen apart for its cold cathode lamp. It's almost 12 inches in length, and very thin. Before the motherboard died, the LCD back light was still working. So I wanted to take it out, along with its inverter, to attempt to re-use it. Soon after doing this I saw a problem in my plans: the input of the inverter is a whopping nine wires. This is a bit more than I'm used to dealing with for power supplies. I was wondering if you guys knew any way that I could go around this? At request I can most more pictures and model number of the inverter in case you can't read it in the photo. tl;dr - Cold cathode inverter in picture. output is two wires, input 9 wires. How do I use this

Posted by Pixel_Master 7 years ago


Is there anyone who knows of a Cold Frames Intructable?

Just looking for various designs and ideas to come up with some for a perma-culture installation i'm in the process of creating. Need something as a starting nursery

Asked by merconious 9 years ago  |  last reply 9 years ago


Belarus Tractors-cold weather starting information?

Thank you for taking my question.  I purchased a Belarus tractor model 525 (65 hp. 4wd) new in 1990.  Although the tractor came equipped with glow plugs, they burned out shortly after I purchased the tractor.  I replaced the glow plugs again and they also didn't last long.  I then installed a block heater which heats the water and also a small heater from Wolverine company which actually glues on externally to the bottom of the oil pan.  Now although these products help somewhat, I was wondering if any of my good Instructable friends have had similar problems with these types of tractors and how they eliminated the problem.  The two heater items while they help, require several hours if not overnight to work.  Other than the cold weather starting problem this has been a good solid tractor.  In closing, I know these tractors are made in Belarus/Russia where the temps are far more severe than here in Southeast Missouri so I know there must be a solution.  One last thought, cold weather for these tractors is defined as any temp. below 60 degrees F.  Thanks, Debra Kay  

Asked by Debra kay 6 years ago  |  last reply 2 years ago


Will my Cold Cathode Computer Light work?

I just bought a Coolermaster ULTRA AURORA (DUAL) from a local store. On arriving home, i went to place it in my new HAF 932 case from Coolermaster. I have open slots and power supply for it but my video cards are to big to place it from the inside into the rear panel port. It has a on and off switch and a dimmer on it. Since i cant fit it in, i looked at bypassing the switch. the cord that plugs into the psu can fit in the switch or the inverter. I wanted to know if i can SAFELY bypass the switch. Go directly from the psu to the inverter to the bulbs is my plan. Would that be bad for anything? Coolermaster was of no help. Apparently, the model is 5 years discontinued no longer has manuals on file. They were less then helpful.

Asked by trf 8 years ago  |  last reply 8 years ago


Would a 12" Cold Cathode light fit anywhere IN an Xbox 360?

I currently have already installed 4" cold cathodes but was wondering if 12" lights would fit.

Asked by Steeps5 8 years ago  |  last reply 8 years ago


Will spray paint set right if used in cold weather? Answered

 I'm painting a bike frame, and I was wondering if the primer and paint would set okay if I'm using the spray paint in 30 degree weather. Thanks.

Asked by Zem 9 years ago  |  last reply 9 years ago


Can someone help me find an acoustic/karaoke version of So Cold by Breaking Benjamin?

Yeah I cant find it anywhere so can someone help me?

Asked by nerd7473 5 years ago  |  last reply 5 years ago



is koolaid better for you than soda?

So the big question...is koolaid (the drink) better for you than soda? or equal? BTW: i just ordered new blue cold cathodes and i fixed the gears on my old bike.

Posted by Yerboogieman 10 years ago  |  last reply 8 years ago


Loss of temperature sensation in fingers? Answered

I've never had this problem until now...here's the story. Well, I was outside the other day, and it was freaking cold out. Probably about 9 degree's F. I was wringing cold water out of a towel (long story) and the cold really hurt my fingers. First my fingers felt cold, then nothing...just this buzzing sensation. Realizing that wringing water out of a towel with bare hands at 9F is probably a stupid idea, I rushed indoors and defrosted my hands with warm water. But all I felt was buzzing, not warm water. Hmm. So today I was melting wax in a soup can in boiling water, and I touched the tin to see how hot it was. It didn't feel hot, so I just grabbed the boiling hot tin of wax and poured it into my mold. The wax dribbled onto my fingers. I didn't even notice it! Later that day it occurred to me that maybe i was having trouble feeling how hot things are, so I experimented. I ran hot water over my fingers, but it didn't feel hot at all. It just feels like my fingers are buzzing or something.  Stranger still, if I IMAGINED that the hot water is cold, it suddenly feels cold! If I imagine it's hot, I get that buzzing sensation. It's probably just a temporary condition, so I was wondering if it's ever happened to any of you folks?

Asked by nepheron 8 years ago  |  last reply 8 years ago