how do i get manganese metal from manganese dioxide? Answered

Hello, I have a very large amount of manganese dioxide, which i wish to turn into manganese metal, however, i have a problem with reducing it with carbon, which is that i dont have a furnace, or even the materials for a makeshift one, as i found out all the bricks that are sold in this state, are all sand or cement, no clay, not even at the hardware store. I was wondering, if there is any way for me to get manganese metal other than reducing with carbon, such as electrolysis of manganese in some soluble form. thanks

Asked by oldmanbeefjerky 6 years ago

How does one measure the level of carbon dioxide in the air?

I'm planning to see if more Carbon Dioxide in the air is good for plants, but to do this I need a way to measure (moderately accurate readings) of the concentration of Carbon Dioxide in the air. Money isn't too much of an issue, just not too much (over $100 is too much) but it needs to be quick and easy to use. Ideas?

Asked by Kryptonite 8 years ago

how do i make lead dioxide electrodes? Answered

Hello, i want to try and make some lead dioxide electrodes, but i have no clue as to how. i need to make lead dioxide, then apparently mix it with a binding agent to make an electrode, and thats all the info i could find could someone please fill me in on the rest? like what that binding agent is and so on, what is the proccess involved in turning lead into lead dioxide? i have some old car batteries due to go to the dump as they are working at less that 50% efficiency which was apparently enough reason for my dad to say theyre ready for the dump! is it true that the lead sheets inside the batteries are just pure lead dioxide? the reason i need it is to make sodium chlorate, and in extension, potassium chlorate, and i dont want to use graphite electrodes as they will errode away, plus i cant afford any platinum electrodes, nor can i find them for that matter!

Asked by oldmanbeefjerky 7 years ago

Is there a way to remove Titanium Dioxide from a soap? Answered

It's a weird colored soap, and noticed titanium dioxide in the ingrediants. Can't this be used in pyrotechnics?

Asked by PKTraceur 9 years ago

What is the lag time when you use Carbon Dioxide air tanks for paintball? Answered

I need to know the time it takes for C02 to regain pressure firing.

Asked by Paintballer98 7 years ago

Can I get a 20 pound CO2 cylinder filled with Helium? Answered

I recently got a 20 pound CO2 cylinder and was wondering if I would be able to get it filled with helium gas.

Asked by workinprogress37 7 years ago

hi there. i want a gun can fire gas like Co2 fog which used to shoot on people for fun.

Just LIke those guests blew by on some TV shows. It dosnt have to be portable,not have to be CO2. can somebody offer me a solution. Thank you.

Asked by zeebiz 8 years ago

how coating titanium dioxide? Answered

 Dear all...  I like to build an air purifier filter with UVCm lamp +titanium dioxide. Please help me to know how I can stick titanium dioxide powder on surface aluminum or cardboard .Thank you in advance.

Asked by lam 6 years ago

Are Co2 (Carbon Dioxide) air systems refillable? Answered

The kind of Tank Im talking about is a Paintball air system. Are they refillable?

Asked by Paintballer98 7 years ago

A dangerous acid is in schools

I would like to start a poll here.Dihydrogen Monoxide is a dangerous acid that can kill in a multitude of simple ways. It is all over schools and I would like to know:Do you think it should be banned?pleases leave your comment in the appropriate area below, and at the end of the week, I'll tell you what it is. (and if you do know what it is, please don't spoil it) I would like to see your respinse before you research.======ANSWER======Ready?..................IT'S WATER!Dihydrogen mononoxide - H2O , water.Some students at ATM University sent around a research study and a poll and around 80% of the student population voted to ban it. This is an interesting effect of how ingnorance can have a significant affect on life. Moral: DO THE RESEARCH!

Posted by gimmelotsarobots 9 years ago

i just electrolyzed copper sulfate and there is a white paste on the bottom of my cell, what is it?

I just electrolysed copper sulfate with my lead dioxide electrode i made by electrolysing a lead rod in sulfuric acid, and now there is a white paste on the bottom of my electrolysis cell, i want to know, is it lead sulfate? or is it something else? and also i wanted to ask, as well to anyone who may know the answer, how fast does lead dioxide get eaten away when making chlorate or perchlorate?

Asked by oldmanbeefjerky 6 years ago

Carbon dioxide sensor??

Hi, I'm working on a project that measures outdoor air quality. Wondering if anyone knows a CO2 sensor that's not too difficult to use with a microchip (bs2 or arduino)? or knows of any links to air quality projects (the ones on MAKE seem to be broken links..) thanks! Kiera

Posted by kieranof 11 years ago

Where can I find a CO2 sensor that will allow me to measure the concentration in a small space?

I'm doing an experiment where I'll be burning a candle in a closed box, and measuring the concentration of the carbon dioxide in the air. I need to be able to record a value for the concentration of the CO2. What's the best way

Asked by suvayanr 8 years ago

Can I make sulphuric acid in the following way?

I have read most instructables but I was not able to find sodium bisulphate, sodium metabisulphate etc. I check the web and find that Iron(ii)Sulphate -->(Heat) Iron(iii) oxide + sulphur dioxide + sulphur trioxide Can I dissolbe the sulphur dioxide and trioxide into water and form sulphuric acid? I have make a diagram, have a look!

Asked by cyberpig 8 years ago

Air sample analysis for the concentration of CO2/Carbon Dioxide? Answered

I'm working on a high school science fair project which concentrates on the CO2 emmissions of automobiles and anlyzes two methods of filtering CO2 from car exhaust. It's really a pretty simple project - except that i don't have a Carbon Dioxide monitor. Online they range from $200-800 and i've contacted the enviornmental department at a local university to see if they can help me. I'm still waiting on a reply but i'm wondering if any of you guys (or gals) have any ideas on how i can find the concentration of CO2 in car exhaust.

Asked by Aaron Cole 4 years ago

Nanotube Tech Transforms CO2 Into Fuel

What do we think about this?

Posted by SolarFlower_org 9 years ago

hydrogen peroxide

I am wanting to make some sulphuric acid because it is on of the most useful acids around and i have ran into a problem. after you burn sulphur to create sulphur dioxide you then need a catalyst to form sulphur trioxide and then dissolve in water. which catalysts could be used and could you just let the sulphur dioxide dissolve in hydrogen peroxide (so2-----so3------h20--------h2so4 or so2 ------ h202---------h2so4).if this would work how could you get a large enough concentration of hydrogen peroxide?

Posted by dellboy 10 years ago

Study: Ethanol Worse for Climate Than Gasoline

Ethanol is under fire again: At first blush, biofuels such as corn ethanol and soybean diesel seem like they would be great from the standpoint of global warming. The crops soak up carbon dioxide from the atmosphere as they grow, and that balances out the carbon dioxide they produce when they're burned. But until now, nobody has fully analyzed all the ripple effects of this industry. And Tim Searchinger, a visiting scholar at Princeton University, says those effects turn out to be huge. "The simplest explanation is that when we divert our corn or soybeans to fuel, if people around the world are going to continue to eat the same amount that they're already eating, you have to replace that food somewhere else," Searchinger says.Searchinger and his colleagues looked globally to figure out where the new cropland is coming from, as American farmers produce fuel crops where they used to grow food. The answer is that biofuel production here is driving agriculture to expand in other parts of the world."That's done in a significant part by burning down forests, plowing up grasslands. That releases a great deal of carbon dioxide," Searchinger says.In fact, Searchinger's group's study, published online by Science magazine, shows those actions end up releasing huge amounts of carbon dioxide. The study finds that over a 30-year span, biofuels end up contributing twice as much carbon dioxide to the air as that amount of gasoline would, when you add in the global effects. The rest of the article (and radio broadcast) is here

Posted by Goodhart 10 years ago

How do I collect the oxygen from the reaction of hydrogen peroxide and manganese dioxide?

I believe that the reaction between the black, powdery manganese dioxide found within carbon-zinc batteries, and household-variety hydrogen peroxide produces oxygen. However, it is my understanding that oxygen is heavier than air, and will therefore that collecting the gas will not be as simple a matter as seen in steven07's Instructable on producing and collecting hydrogen.Unless I'm completely wrong, and a reaction that produces oxygen will inflate the balloon. :POr, does anyone else have another way of collecting the gas?

Posted by carbon 11 years ago

All right, let's clear this up: What the hell is inside of a battery?

Really frustrating: I accidentally closed the tab I had been working on for about 15 minutes, so I'll probably be missing a couple of questions I had been meaning to ask.So anyway: When I peel off the outermost metal covering of a zinc-carbon battery, I'm just taking away a protective steel covering, right? When I get rid of that, am I looking at the actual zinc "case?"What is the sticky, black material that surrounds the graphite rod? Is that manganese dioxide? Is manganese dioxide the same thing manganese oxide?Further outwards from the center of the battery, there is another black substance. Is this ammonium chloride?I haven't actually chopped open a carbon-zinc battery all the way yet. Is there a good technique for removing all of the contents?How can I tell the difference between the two black substances? Is the moist, black paste ammonium chloride? If this is so, then why, when I pull the graphite rod out of the battery, is it sometimes coated with a sticky, black substance? Do the substances mix with each other or are both substances sticky and black? Is one a powder?Is it okay to drill through one end of the battery? If I drill into the negative terminal of the battery, what will fall out?Basically, what are the physical properties of all the materials? How can I tell the difference between them?Now: On to alkaline batteries...Both types (carbon-zinc and alkaline) appear to use manganese dioxide. Is this so? On Wikipedia's article on alkaline batteries, manganese dioxide is described as Zn/MnO2, with the two as a sub-script. Does the slash mark mean that zinc and manganese dioxide are interchangeable?What will I find if I open up an alkaline battery? Is it safe to do so? What is a good, safe way to open one up?Are there any particular "fun" applications for these chemicals? Think explodiness ; )I've heard that manganese dioxide can be used to produce oxygen. How do I do this?There might be some yellow tag-box notes on these, pictures. For the context, visit my Instructable on how to make your own carbon arc light. I'm not trying to advertise, I'm just anticipating someone asking about them.

Posted by carbon 11 years ago

'Revolutionary' CO2 maps zoom in on greenhouse gas sources

Researchers now have a better view of where carbon dioxide is being emitted thanks to Vulcan, a research project led by Kevin Gurney, an assistant professor at Purdue. This map shows where CO2 is being emitted in the continental United States in 10-kilometer grids and combines data from sources including factories, automobiles on highways and power plants. The map offers more than 100 times the detail of previous inventories of carbon dioxide. The image displays metric tons of carbon per year per grid in a logarithmic base-10 scale.more at Physorg

Posted by ewilhelm 10 years ago

Is silican dioxide/diaiomaceous earth safe in energized electronics

One of the problems with bringing found items home,is bugs that live inside.  i think the powder use for crawling buggers  is the safest i know of, I sprayed a couple items with the powder after i saw a big water-bug zip across the floor. Since i also had a acme juicer on the floor near where it exited, i sprayed that to with the silican dioxide/diaiomaceous earth mix, i may give it to a friend and dont  want to give her a roach problem. I also dont want it laying eggs inside. i doubt it went into the juicer,but better be safe. i was thinking of spraying everything i find  through the vent wholes so i dont release anytthing  into my apartment.  I did that one time when i took an A?C out of the window and lreplaced it.  i let the old one sit on the floor for aq couple days.  I had yellow jackets the whole summer  in here. It was common to  get up in the am and see 50 yellow-jackets on the sunny window.warming themselves

Posted by escapefromyonkers 7 years ago

Possibility of making temporary hair colouring?

Hello there, I've always wanted to dye my hair grey but didn't want to go through the hassle and the possible hair damage of bleaching.  I came across someone selling chalk sticks for temporary hair colouring and was wondering if a cheaper, liquid version could be made to cover all the hair instead of a small part. My initial idea was to use calcium carbonate and grey food colouring with maybe a little bit of talcum powder which will then be mixed with some water so it can be applied easier. These are the ingredients in the colouring I want to use: glycerol, propylene glycol, silicon dioxide, titanium dioxide, vegetable carbon  Is there anything here I should be concerned about? As I'm going for a grey colour I was also looking at using a small amount of activated charcoal or some other skin safe fine black powder. Is this the best way or are there better alternatives? Advice will be appreciated. Thanks for reading.  

Posted by egrayton 2 years ago

$25 Million for Capturing Carbon

Gore and Branson have teamed up to sponsor an X-prize-like competition for capturing carbon dioxide. I love these types of competitions. Is anyone here on Instructables in a position to enter? With a bit of industry-sponsorship, this would make for a series of fantastic Ph.D projects. From: multi-million dollar prize is on offer to anyone who can invent a device that will remove significant amounts of carbon dioxide from the atmosphere. As one of the largest science prizes on offer, it is likely to attract huge interest globally in a bid to combat climate change.The initiative was launched today by British billionaire entrepreneur Richard Branson and former US Vice-President Al Gore in London.The US$25 million "Virgin Earth Challenge" Prize can be claimed for any invention that will remove "significant" amounts of carbon dioxide from the atmosphere - perhaps in the order of a billion tonnes a year. Current global emissions are more than 7 billion tonnes per year."The winner must be able to demonstrate a commercially viable design which will result in the net removal of anthropogenic, atmospheric, greenhouse gases each year for at least ten years without countervailing harmful effects," state the written rules of the competition. It must "contribute materially to the stability of the Earth's climate".The winning entry could be anything from manufacturing bacteria to install in industrial emissions pipes, to creating a system that buries CO2 underground, or even inventing artificial trees to breathe in the gas from the air.

Posted by ewilhelm 11 years ago

What is the specific pressure of a liquid called?

I am more specifically referring to shielding gas for welding, C25 (which is 75% argon, 25% carbon dioxide). How do I find out what pressure the gas will be at a given temperature? This is, of course, assuming that the gas is liquefied and contained. If I left something out (because I don't know a lot about this particular conundrum) tell me, I'll comment back.

Asked by thecheese429 9 years ago

Is it possible if i connect a gas sensor MQ-136 to microcontroller directly?

I want to detect sulfur dioxide (SO2) uses sensor MQ-136. Is it possible if i connect the sensor to microcontroller directly? or i need to add a circuit between it? if yes, what kind of circuit ? And anyone knows what is output of gas sensor MQ-136? whether it is analog or not yet? Thanks folks!

Asked by ftreska 5 years ago

Is this what i think it is?

I was taking apart a heavy duty panosonic battery. it didn't say if it was dry cell or not. when i opend it up. and it only had this black powder. it was kind of lumpy. i think its magnesium dioxide. there was also i rod. i took it out and washed it. it is black. i think its a carbon rod since the inside of the battery wasnt wet. it looks like it has little pores on the surface. SO my question is..... is the rod carbon?????????

Posted by DELETED_DELETED_kruser495 10 years ago

When Toast Flies

It is not often that I find something so useless so awesome. Freddie Yauner's toaster pops your toasted bread way up into the air with high-pressure carbon dioxide. He is going to try to break his own world record of the highest toaster pop, which currently stands merely at the height of his ceiling. An added bonus of this: if he pops it to the right height, he may be able to avoid the curse of the toast always falling butter-side down.Link

Posted by joshf 9 years ago

Someone can help to build a small system to mix three gas from three various tanks and compressing it in a fourth tank? Answered

I need a small system to mix three gas (carbon dioxide, helium and hydrogen) from three various tanks and compressing it in a fourth tank. I don't need high pressure, but I need extreme accuracy and purity in the ratio of the mix. I want to try different ratio in gas mixture, then I need to regulate any single gas amount

Asked by GiorgioSteimetz 6 years ago

Sodium Chlorate production other ways?

Sodium chlorate production without the need of keeping the solution at around 50-70°C from  the electrical power used for electrolysis?  sodium chlorate production besides having to heat from amperage the sodium chloride solution and electrolysis then would a catalysis to help with oxygenating the solution like instead of water use 3% hydrogen peroxide or manganese dioxide or ever ammonium nitrate and yield sodium chlorate using electralysis with out needing to keep the solution at 50-70°C? 

Asked by symboom 8 years ago

sodium production

Another way for sodium production heared some where that molten sodium acetate  produces sodium metal, carbon dioxide and ethane Sodium Acetate baking soda and vinagar melting it and doing electrolysis to make sodium Melting point 324 °C, 615.2 °F (anhydrous) 58 °C (trihydrate) still has water Sodium Hydroxide Melting point 318 °C, 591 K, 604 °F ive made sodium with lye very useful thanks alot to this video message back on what you think

Posted by symboom 8 years ago

**Please Define This Word. Everyone who replies wins a prize...**

PLEASE! At school today, this word came up. I know I have heard it before, but can't remember where, or what it means.Of course, i don't know the spelling...It sounds like DEL-FWAY-GOMaybee spelled like...Delfuaygo, Delfwaygo, Delfaygo, Delaflaygo.Anybody heard of this? Please let me know.By the way, the prize is.... a FREE GAS compossed of roughly 78% nitrogen 20.95% Oxygen 0.93% Argon and 0.04% Carbon Dioxide!It can be picked up where ever dust particles, dander, germs, and airborne carcinogens are sold!

Posted by evy-wevy 11 years ago

how to make sodium metal from sodium acetate?

Electrolysis of sodium hydroxide to make sodium video showing sodium being made a diagram of how it works heared some where that sodium acetate molten (with no water) produces sodium metal, carbon dioxide and ethane> Sodium Acetate  Melting point 324 °C, 615.2 °F (anhydrous)  58 °C (trihydrate) still has water baking soda and vinagar   Sodium Hydroxide Melting point 318 °C, 591 K, 604 °F

Asked by symboom 8 years ago

Carbon emissions still increasing despite recession

With the whole economic kerfuffle going on you would've thought that there would be less carbon going up into the air. New studies show that emissions continue to ride, however. The data is collected and analyzed by scientists from the Norwegian Polar Institute and Stockholm University. Researchers found that during the first two weeks of March, the concentration of carbon dioxide in the atmosphere rose to 393.71 parts per million (ppm), up from 393.17 ppm during the same period last year. John Stroem, a scientist with the Norwegian Polar Institute, told Reuters that looking back at data gathered since the 1980s, the increase in carbon concentration levels seems to be accelerating. Carbon Emissions at All-Time High Despite Economic Slowdown

Posted by fungus amungus 8 years ago

Using CO2 for a Jetpack blast off smoke prop?

Hey Guys! I'm making a jetpack for this upcoming Halloween. It's going to have lots of moving parts and cool stuff using an arduino, but the most important feature I want is a thick blast off smoke effect. I have been looking online, and it appears to me that a CO2 fire extinguisher would be great. However, these are expensive and not easily modified to be electronically triggered. I've considered a paintball CO2 can and a Sodastream. Will either of these give me the effect I desire, and is this plausible? I'd like the smoke to be at least as thick as the stock photo I attached, hopefully thicker and stronger. Thanks! I'll be sure to post pictures when I finish.

Posted by turtledrake 4 years ago

Can anyone help me make a co2 gel mask?

The more I read up on the benefits of using one of these masks the more I want to try one, it hasn't quite hit the states by storm yet but it will, too bad it costs an arm and a leg! I have an inkling of what may be required to make it, it's just a gel (glycerin) and co2 gas. I was thinking I could make one of the at home carbonators that several people on here have posted instructables on, but I wanted to be sure that it'd work in that manner. I don't think carbonating a liquid is the same as carbonating a gel. Another thing most formulas have in common is sodium bicarbonate. Any ideas?

Posted by gabys225 3 years ago

sodium pyrosulfite/Bonide stump out

Well today I went to the home depot planning on picking up some grants stump remover, they were all out and the only other similar item was bonide stump out, it didn't have an ingredient list, and really wasn't comfortable asking the sales guy if this stump remover had explosives in it. (Especially since im 15.) so i bought it came home and did some research. So this crap has no potassium nitrate, but i found its 98% sodium pyrosulfite, now the name has the word PYRO in it so I'm hoping someone out their knows something I can do with it, right now all i have figured out is when it comes in contact with water it makes sodium dioxide, which is really smelly gas, so I have an idea for an impact stink bomb, any other ideas.

Posted by arch_angel07 10 years ago

how does pine and willow charcoal differ from plain old random tree charcoal when used in pyrotechnics? Answered

hello, i am starting up an online store, and am already starting to sell some of my pyrotechnic supplies, such as manganese dioxide and charcoal, but i just realised, on ebay (my online store is not an ebay store), people are only ever selling pine charcoal or willow charcoal! which doesnt make much sense since is a super fine powder and is made up of carbon. i need to know what makes these so much different from regular random tree charcoal that comes from just anywhere, and, is the charcoal i have now, which is of unknown origin, but mostly of from pine-like trees in the tropics, the same? i need to know if it makes any difference since i dont want angry customers demanding refunds because it isnt as good as other charcoal!

Asked by oldmanbeefjerky 6 years ago

how should i set up an electrolysis cell in order to convert magnesium sulfate into sulfuric acid? Answered

hello, after finding out copper sulfate is expensive everywhere, ive decided to try making my own, from sulfuric acid which i intend to make form magnesium sulfate, aka epsom salts. i am going to try and react copper oxides with any formed sulfuric acid then crystalize it and remove it, but, im not exactly sure on how i should set up this cell, to ensure the formed magnesium oxide/hydroxide doesnt react with the sulfuric acid again, as well as what the best voltage/currect would be to minimise polution/ errosion from my lead electrodes (just plain old lead, i plan on forming lead dioxide in this reaction also). any help would be greatly appreciated, also whoever solves my problem will get a best answer form me.

Asked by oldmanbeefjerky 6 years ago

How can one make a water cleaner for a well using Titanium Dioxide and UV light? Answered

Hi, I have been looking into cleaning my well water at the source, rather than fed in into the lines. I have looked at making a simple ozone generator by purchasing one online and using a compressor to get it down 40 ft. Then I came across "silver bullet" and what intrigued me was that they produced hydrogen peroxide, which apparently is a a better bacteria killer, perhaps more stable. The reason that I want to kill bacteria and have it in the well at the source is because lots of iron bacteria and iron in my water plugging up my pump every so often is frustrating. This product looks promising, but costly, so researching this I found that they were using UV light, but normally UV light makes ozone with air. Then I dug deeper and then found out they are using a matrix made up of something similar to Titanium Dioxide (there are different forms, such as anatase and rutile which maybe more effective) so that when struck by proper UV light, it gives of an electron which will hit water vapor in air and split up water molecules to form OH- and H2O2 and some O3. So, one can buy TiO2 online, put it into a container that fits a UV lamp inside and blow compressed air through that and down the well, but the powder might get blown down the pipe. So how can one crystalize it around a cylindrical form that fits around a UV light to make it more efficient? I saw a similar post by Ian and he wants to use it for air cleaning, but gluing doesn't appeal to me as the glue itself might react with oxidants produced and give off other contaminants that I do not want in the water. So, can I use a type of glue that is safe around oxidants? Is TiO2 able to crystallize easily? ( I read that it doesn't dissolve in water well, which would rule out supersaturating water and crystallizing it that way) Any thoughts and suggestions?

Asked by Hendrik0360 3 years ago

A Carbon Tide: Past, Present and Future

The New York Times has a really nice graph showing the world's historical and projected carbon emissions here at A Carbon Tide: Past, Present and Future Global emissions of carbon dioxide, measured by the weight of carbon it contains.Their choice to display it in flash rather than a similarly-sized image is somewhat annoying, but the chart itself does a nice job presenting a type of data that is often difficult to comprehend. Getting people to truly grasp the size and scale of some of the world's energy issues is one of the key challenges in making progress on those issues. In 2004, 7.9 billion metric tons of carbon were released -- did you make good use of your metric ton?Here's a thought experiment in that same vein: The San Francisco oil spill was originally reported as a 140 gallon spill, but turned out to be approximately 58,000 gallons. How much worse is a 58,000 gallon spill compared to a 140 gallon spill?

Posted by ewilhelm 10 years ago

Space Related Instructable - Atmosphere/Pressure Sensors

I am really into rocketry, aerospace engineering and space in general. I have met a few people at my college that are somewhat interested in the same but dont know alot about it. So i thought i could build a few different environment sensors like the astronauts use to simulate/demonstrate a few basics. For example i wanted to build a few different sensors. But i cant find any instructables to teach me how to make these....Can anyone help or can anyone direct me to a few instructables that could be used to tweak to work for this purpose? - To help show how the astronauts have to regulate their atmosphere in the ISS or even explain how we don't breathe just oxygen - we breathe a combination of O2 and Nitrogen since Earth's atmosphere is mostly nitrogen. O2 (oxygen) Sensor CO2 (Carbon Dioxide) Sensor N (nitrogen) sensor Display to show all sensor data - To help show how they manage pressure in the ISS and have it regulated by an airlock. Atmospheric Pressure Sensor and Display

Posted by acadena2 2 years ago

Chemicals people would want to make?

Basically I want to know what lab chemicals you want to make, if you know how to make any useful chemicals. please post, I am not responsible for and injury's, fatality's, or "bad things" of any sort that come from this thread, all things posted here are to assumed for informational purposes only.

Posted by 8 years ago

Dirt Cheap Acoustic Guitar Pickup

Hi I am concerned about the health and safety aspects of the instructable of "Dirt Cheap Acoustic Guitar Pickup by Xuthal". The project encourages people to take apart a smoke detector to obtain a piezo sounder. However no warning at all is given by the author that there may be radioactive material in the device, or how to recognise it and how to deal with it. I tried to post a warning on the article but for some reason it hasn't worked. I could not see how to flag up the item so I am posting here. Whilst the manufacturers of smoke alarms play down the dangers of Americium 241 dioxide (the radioactive material), they would most certainly not condone opening up a smoke detector sensor. Am O2 will most likely pass straight through the gut due to its insolubility, so your readers are probably safe from ingesting it. However, if the source is fractured into dust particles, it could be inhaled and will lodge in the lung for a long time. Being an alpha emitter the Am241 will very likely end up causing a lung cancer. I think this instructable is highly irresponsible and should be removed. In any case the item taken from the smoke detector, a piezo transducer, is readily available from any hobby electronics supplier and costs less than the battery to power the detector in the first place!

Posted by TCSC47 2 years ago

"Your Environmentalism Sucks!" Says WIRED

The cover story of WIRED this month has been published online and you can read their 10 "heresies" about the environment. They're clearly trying to shake things up by telling people stuff that sounds so wrong, but is obviously right according to them.The gist of WIRED's philosophy is that it's all about the carbon dioxide emissions and that every discussion should be framed entirely by this. After that setup, each article is a quick hit against some supposedly sacred cow.The full list of articles is below and here's a response from ecogeek that continues the discussion. So what do you think?Live in Cities: Urban Living Is Kinder to the Planet Than the Suburban LifestyleA/C Is OK: Air-Conditioning Actually Emits Less C02 Than HeatingOrganics Are Not the Answer: Surprise! Conventional Agriculture Can Be Easier on the PlanetFarm the Forests: Old-Growth Forests Can Actually Contribute to Global WarmingChina Is the Solution: The People's Republic Leads the Way in Alternative-Energy HardwareAccept Genetic Engineering: Superefficient Frankencrops Could Put a Real Dent in Greenhouse Gas EmissionsCarbon Trading Doesn't Work: Carbon Credits Were a Great Idea, But the Benefits Are IllusoryEmbrace Nuclear Power: Face It. Nukes Are the Most Climate-Friendly Industrial-Scale Form of EnergyUsed Cars - Not Hybrids: Don't Buy That New Prius! Test-Drive a Used Car InsteadPrepare for the Worst: Climate Change Is Inevitable. Get Used to ItCounterpoint: Dangers of Focusing Solely on Climate Change

Posted by fungus amungus 10 years ago

What the Candidates Say About Energy

What the Candidates Say About Energy GIULIANI: Says "every potential solution" must be pursued, including nuclear power, increased energy exploration and more aggressive investment in alternative energy sources. Says energy independence can be achieved through a strategy that emphasizes diversification, innovation and conservation.MIKE HUCKABEE: Wants to lessen U.S. dependence on foreign oil by pursuing "all avenues" of alternative energy: nuclear, wind, solar, hydrogen, clean coal, biodiesel and biomass.JOHN MCCAIN: Wants to limit carbon dioxide emissions "by harnessing market forces" that will bring advanced technologies, such as nuclear energy, to the market faster. Seeks to reduce dependence on foreign supplies of energy. Wants the U.S. to lead in a way that ensures all nations "do their rightful share" on the environment. As you may know,McCain was AWOL in December on the key Senate vote to secure an 8-yearSolar Investment Tax Credit extension -- and he could have been the hero by casting the 60thvote (it failed 59 to 40 with only McCain being AWOL).MITT ROMNEY: Wants to accelerate construction of nuclear power plants as part of a "robust, cleaner and reliable energy mix." Seeks energy independence not by halting all oil imports but by "making sure that our nation's future will always be in our hands."DemocratsHILLARY CLINTON: Says she's "agnostic" about building nuclear power plants. Prefers renewable energy and conservation because of concerns about nuclear power's cost, safety and waste disposal. Wants to spend $150 billion over the next 10 years to cut oil imports by two-thirds from 2030 projected levels, with some money going toward alternative energy.JOHN EDWARDS: Opposes nuclear power because of cost and safety concerns. Favors creating a $13 billion-a-year fund to finance research and development of energy technologies; wants to reduce oil imports by nearly a third of the oil projected to be used in 2025.BARACK OBAMA: Says the U.S. can't meet its climate goals if it removes nuclear power as an option but says such issues as security of nuclear fuel, waste and waste storage need to be addressed first. Wants to spend $150 billion over the next 10 years to develop new energy sources. Seeks to reduce"oil consumption overall by at least 35 percent by 2030."

Posted by ewilhelm 10 years ago

can i use hair dryer or toaster nichrome to make a lead forge?

Hello, a brilliant idea(as they often are) crossed my mind this morning which was to build a 3 in one heating machine. 1. a charcoal maker, heats up wood to the point where it converts to charcoal. 2. burner gas generator. the flamable hydrocarbons released from the sun bleached wood (hite and crumbly, i got tonns of it literally, like moled plane wood), to make fire to reuse for a stove or heater, for something i may want to heat at the same time. 3. lead forge , for melting lead to fill my lead electrode molds, so i can electrolyze in sulfuric acid and then sell, or use, as lead dioxide electrodes for chlorate making etc. Now, butane and propane are completely unreasonable sources of heat, and too expensive as well, so i wanted to know, if the nichrome heating element inside a toaster or a hair dryer, could reach temperatures in excess of 330 degrees Celsius? i want to wrap the nichrome wire , around a steel crucible , separated by fiberglass of course to prevent the nichrome actually touchings the steel, so that when i apply power, the wire heats the steel (which will not be exposed to air) with the nichrome, and therefore heats whatever is inside the crucible , however, i want ti to also be able to reach temperatures in excess if 330 degrees Celsius, so that i can also melt lead. is this possible? otherwise, what kind of nichrome can i directly apply to 240v (wall output) assisted by large contacts for obvious reasons to do so. i know for a fact that nichrome drawing 5 watts is capable of melting lead, as i have melted lead before with my battery powers 5 watt soldering iron, which's soldering tip is a hollow piece of metal with nichrome inside. i want to be sure that this machine will work before i go and buy some second hand toaster or hair dryer at the dump shop. so, will it work? Ive seen hair dryer heating element used before to heat sodium hydroxide inside a steel crucible, in a sodium electrolysis cell, and it went over 320 degrees Celsius. i think. but i cant be sure. i still need a second opinion, thanks

Asked by oldmanbeefjerky 6 years ago