Carbon bike

I have a carbon bike factory in china mainland and can design the carbon bike as you like .You can check the enclosed pircture which we produced for the customer . If you are interested in this ,you can contact me by Msn or mail : russ4781859@hotmail.com. Or we can talk about this kinds of products .

Topic by russ110   |  last reply


activated carbon

Could someone use activated carbon to produce hyrdogen out of water extremely fast because of the huge amount of surface area? Or would that not matter?

Topic by guyfrom7up   |  last reply


Soda carbonation?

Hi I want to carbonate my own soda with co2 (everytime I use yeast it comes out wrong/disgusting). I know I need a co2 tank and a keg, but what do I need in between? (simplest system possible).

Question by rushfantomsawyer   |  last reply


carbon fiber sheets

I need 2x2 twill, cheap

Topic by freshmanfred0000   |  last reply


Carbon Button Lamp

The Nikola Tesla group forum is asking for new projects, so I'm posting this as a suggestion. I would love to build it myself, but I lack the tools and money. This is my first contribution to Instructables, so please comment constructively. Nikola Tesla invented the Carbon Button lamp as a kind of incandescent light, because Thomas Edison banned him from using his incandescent filament bulbs. Nikola later discovered that versions of it could also be used in wireless, trans-Atlantic telegraphy, and to investigate what we now call x rays. In fact, he even used the lamp (or something similar to it) to take x-ray photographs, 8 years before Wilhelm Rotgen discovered them.For this reason, I must warn you: this device may possibly generate x rays. I am not responsible for any harm of any kind that may or may not result from re-creating this interesting device. There are phosphors that you can buy that will absorb x rays and re-emit them as visible light. I recommend that you coat the bulb with it until you know for sure that the x rays aren't strong enough to hurt you, or if makes x rays at all. Mixing it with a phosphor made for uv light wouldn't hurt either. Theory of Operation:The bulb is powered by a Tesla Coil, or other source of high voltage, high frequency current, such as a driver for a plasma globe (actually, the modern plasma globe is descended from this kind of technology!)When the power is turned on, electricity bombards the carbon button. Because carbon isn't the best conductor, this causes the button to heat and release electrons into the bulb's vacuum (the technical name for this is "thermionic emission," or the "Edison effect") . These electrons, in turn, excite the remaining air molecules and cause them to create visible light. This is strikingly similar to how fluorescent lamps work!Supposedly, the bulb should shine 10 times brighter than an incandescent bulb.(Note that the excitation of the air molecules, not the incandescence of the button, is actually the main source of light from the bulb.)If anyone decides to build it, please post an instructable showing the steps and finished product. I suggest you get started by reading the patent, number 514,170. You may also want to read part of Tesla's lecture, "Experiments with Alternate Currents of High Potential and High Frequency."To anyone who will attempt this, I wish you good luck!

Topic by ElectricUmbrella   |  last reply


Carbonated water tap

Anyone know how to make a carbonated water tap?

Topic by mmanning5   |  last reply


Carbon Button Lamp

The Nikola Tesla group forum is asking for new projects, so I'm posting this as a suggestion. I would love to build it myself, but I lack the tools and money. This is my first contribution to Instructables, so please comment constructively.Nikola Tesla invented the Carbon Button lamp as a kind of incandescent light, because Thomas Edison banned him from using his incandescent filament bulbs. Nikola later discovered that versions of it could also be used in wireless, trans-Atlantic telegraphy, and to investigate what we now call x rays. In fact, he even used the lamp (or something similar to it) to take x-ray photographs, 8 years before Wilhelm Rotgen discovered them.For this reason, I must warn you: this device may possibly generate x rays. I am not responsible for any harm of any kind that may or may not result from re-creating this interesting device.There are phosphors that you can buy that will absorb x rays and re-emit them as visible light. I recommend that you coat the bulb with it until you know for sure that the x rays aren't strong enough to hurt you, or if makes x rays at all. Mixing it with a phosphor made for uv light wouldn't hurt either.Theory of Operation:The bulb is powered by a Tesla Coil, or other source of high voltage, high frequency current, such as a driver for a plasma globe (actually, the modern plasma globe is descended from this kind of technology!)When the power is turned on, electricity bombards the carbon button. Because carbon isn't the best conductor, this causes the button to heat and release electrons into the bulb's vacuum (the technical name for this is "thermionic emission," or the "Edison effect") . These electrons, in turn, excite the remaining air molecules and cause them to create visible light. This is strikingly similar to how fluorescent lamps work!Supposedly, the bulb should shine 10 times brighter than an incandescent bulb.(Note that the excitation of the air molecules, not the incandescence of the button, is actually the main source of light from the bulb.)If anyone decides to build it, please post an instructable showing the steps and finished product. I suggest you get started by reading the patent, number 514,170. You may also want to read part of Tesla's lecture, "Experiments with Alternate Currents of High Potential and High Frequency."To anyone who will attempt this, I wish you good luck!Patent: http://www.google.com/patents?id=UpldAAAAEBAJ&pg;=PA1&dq;=514,170+tesla&source;=gbs_selected_pages&cad;=0_1Lecture: http://www.tfcbooks.com/tesla/1892-02-03.htmQuestions:What can one use for the carbon button?Could one use a modern, hollowed-out light bulb for this? (I would think there would be some problems with sealing the globe, and with the stem.)Edit: I recently found the third picture in Tesla's Colorado Springs notes and his "apparatus for the utilization of radiant energy" patent. It must be the single-electrode x ray tube I was talking about before...

Topic by ElectricUmbrella   |  last reply


Storing carbonated drinks?

 If I'm making a lot (10 litres) of fizzy drinks with CO2 is it okay just to store it in a large plastic container? One of my friends told me that if I put it in the wrong type of container (e.g glass) it can explode. Help?! 

Topic by asasklfjklasfkljasklfjaklfsjkl 


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

Topic by kieranof   |  last reply



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?????????

Topic by DELETED_DELETED_kruser495   |  last reply


Green Roofs Capture Carbon

"Recently, Royal Dutch Shell PLC received $865 million from the Canadian government for a carbon capture and storage (CCS) project. Green roofs, rooftops with plants, can capture and store carbon, according to a new study by Michigan State University in East Lansing. The technology to build green roofs already exists, and they can be created for much cheaper than a CCS project."The key to fighting global warming is capturing carbon from the atmosphere and storing it in new reservoirs that weren't storing carbon before," lead researcher Kristin Getter said...."This looked like a rather elegant answer to the Green Question.  

Topic by Goodhart   |  last reply


Sucking Carbon out of the air?

I read somewhere that lye can absorb carbon from the air, and that organizations are putting out HUGE tubs of lye to suck up carbon. I wonder if it works.

Topic by lawizeg   |  last reply


Carbon Fibre Rotor Blade

I wish to construct a pair of 70cm long carbon fibre rotor blade for my rc helicopter. The inner part of the blade is hollow to reduce weight. I understand that I need to make a two-piece mould out from a sample blade, with some kind of rasin. Any idea or suggestion is very much wellcome. Thanks to all for sharing.

Question by choonsiong08   |  last reply


Is it possible to electroplate carbon fiber? Answered

Hi, I'm into knifemaking. There are some carbon fiber knives on the market, but they all have very poor edge retention. (because the edge is made of carbon fiber as well) I was wondering if it would be possible to add a thick metal coating of a hard metal to a carbon structural center, as to coat the blade in a thin layer of metal. This metal would then be serving as the cutting edge, hopefully with better edge retention.  Is this at all possible? What types of metal could be used? Thanks in advance!

Question by jelte1234   |  last reply


Carbonation and it's relationship with oxygen Answered

I have 2 random and somewhat contradicting questions: Can oxygen cause carbonation in liquid? Does oxygen decrease carbonation in liquids that are already carbonated? (soda) The more details, the better :)

Question by tb24   |  last reply


SOme Uses for Sodium Carbonate? Answered

What are some uses for Sodium Carbonate?

Question by dla888   |  last reply



How to carbonate drinks at home?

I want to carbonate drinks but i don't know how and i am not buying a expensive equipment or anything like that so don't send me links where to buy them Thanks!

Question by trojanx   |  last reply


Carbonate drinks with compressed air? Answered

So there are a lot of carbonators out there, and they all cost in the range of $50-$100, which is a lot, but the real cost comes form the co2 cartridges. So I was wondering.... why not just use compressed air? sure, it would take longer for all the co2 in the compressed air to reach equilibrium between the water and the air, but i do believe that if you let it sit for long enough, it would work. other gasses would also diffuse into the water, like oxygen, but since gasses are hard to taste, it shouldn't make a big difference. (co2 actually forms carboxylic acid, which tastes sour, but i can live with it not being exactly the right taste) all i have to test this theory is 115 psi from an air compressor... would this be enough?

Question by biolethal   |  last reply


Wrapping wood in carbon fibre.

Hi, After cutting my own wooden lacrosse shaft using the tutorial on Instructables, it snapped within half an hour of use. Now I know this was because the grain was pretty poor and it was not a strong wood, but someone suggested that I wrap a shaft in carbon fiber so that it is slightly stronger, limits horizontal movement and reduces denting. I just have a few questions about trying this; Would this carbon fiber be appropriate for the project. http://compositeenvisions.com/raw-fabric-cloth-2/carbon-fiber-97/carbon-fiber-fabric-plain-weave-3k-5-7oz-tape-605.html if not where should I look? The biggest problem I see is somehow packing the carbon tight around the shaft so there are no bubbles and it is consistently straight all the way down the shaft, there is a vacuum packing basics tutorial on instructables but I'm not sure if you could use that for a lacrosse shaft. Instead of making my own bag as per tutorial would just a plain bag (http://compositeenvisions.com/vacuum-infusion-equipment-71/nylon-vacuum-bagging-film-500.html) be fine then clamp off the unneeded extra, although are those bags re usable? Because I don't want to have to pay $5 USD every time I would like to wrap something. I saw something called bleeder cloth as well, would this be needed to stop excess resin sticking to the shaft? When it comes to the carbon, I know someone who sails a lot and has some experience with carbon fiber but none with vacuum packing who said I should lay it up like the image attached to decrease horizontal movement while allowing vertical flex. Would this have the desired affect as if this is successful I plan to make a ton more for a high school team I help coach. I've attached a image to give you some idea of what I'm talking about. Then for the actual laying of the carbon itself, a shaft is not a flat surface so you can't just pour it on like the Youtube video's I've found. I'm not sure how to pull this off. Then afterwards, is there a simple way to test the properties of the shaft; specifically flex and impact strength. Because even if I don't end up wrapping the shafts I still need to test the wood to compare it to alloy. Sorry about the small essay, but I would really like to give this a good shot. Because shipping shafts from the states is quite expensive, being able to make my own and then put graphics on them would be amazing.

Topic by Thatkiwiguy   |  last reply


$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: http://www.nature.com/news/2007/070205/full/070205-16.htmlA 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.

Topic by ewilhelm   |  last reply


Global warming & carbon emmissions

I may be off on a tangent to reality, but I wonder if there are any statistics available on the effect of all the Tonnage Oxygen plants around the world sucking in all the oxygen, separating the various gases & storing them in pressurised liquid form. I did a quick search today and 2 countries alone were 'manufacturing' (sucking in our air, separating the elements and producing) 26,000 tonnes of approximately 99% pure oxygen per day! To the crux of my question: Is this action (carried out on a worldwide scale and potentially growing) upsetting the balance of our atmosphere - we are all informed by the press and by the scientists that global warming is (or may be) attributed to mankind burning fossil fuels and dumping the excess carbons into the atmosphere. I just view this as the flip side of the argument........ has anyone ever considered the tonnage of oxygen drawn in from the atmosphere by these plants which is sold-on essentially as bottled gas or piped to be used for oxidising other materials (blast furnaces, basic oxygen steel-making, scrap cutting  etc), could be having an equal or bigger impact on our atmosphere and global warming than the straight burning of fossil fuels by power stations and automobiles etc? Just 'throwing the idea out there' (Liquid oxygen when spilt and viewed as a puddle, appears blue like the sky, the deeper the oxygen puddle, the more vivid the blue became ..... reminded me of when I was a kid the sky looked a lot bluer than it does these days).

Topic by Ttrick   |  last reply


Do you know low carbon living ?

As the subject saying, do you know what is low carbon living ?

Topic by bella2009111   |  last reply


Commercial Flywheel

I have searched high and low, but i haven't been able to find any company that manufactures battery-alternative carbon fiber flywheels for commercial use. Can anyone help me out?

Topic by nuncoop   |  last reply



How to make carbon paper or carbon felt for use as an electrode in an MFC? Answered

 Hey, i was wondering if there was any cheap method of making carbon paper or carbon felt at home for use as electrodes. 

Question by LiquidLightning   |  last reply


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

Topic by fungus amungus   |  last reply


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?

Question by Kryptonite   |  last reply


Thunderbirds are go!

Abu Dhabi has started to build what it says is the world's first zero-carbon, zero-waste car-free city.Masdar City will cost $22bn (£11.3bn), take eight years to build and be home to 50,000 people and 1,500 businesses.The city will be mostly powered by solar energy and residents will move in travel pods running on magnetic tracks.Finally, the world imagined by Gerry Anderson is starting to be built - whole cities built as one thing, people travelling on monorail pods, centralised desalination plants, massive hydrogen plants... the chances that they will need International Rescue seem greater with every corner you turn.Still, it could be A Good Thing - if it works, this could be a big stimulus to other nations to start working on carbon neutrality with a vengeance. Certainly the promotional video makes the whole thing sound very tempting ...BBC articleMasdar Initiative homepageDeveloper's promotional video

Topic by Kiteman   |  last reply


candle's black smoke deposit seems not to be electrically conductive

(This is the first topic of the "failed experiments" group.)I was wondering if the black smoke of the candles could be electrically conductive (carbon) when deposited as a layer over a piece of glass.After a quick and basic experimentation, it seems it is not.Here is how I proceeded :- I've put a piece of glass over the flame of a candle so a black smoke deposit appear on its surface.- I did so that it becomes opaque (if you want to try, be careful that the piece of glass may break because of the heat)- then, I used two crocodile clamps to make the contact (I've put a certain depth of aluminum foil between the claws of the clamp and the piece of glass)- then, I tried to measure the resistance with a multimeter, but the multimeter displayed no value at all.

Topic by chooseausername   |  last reply


Energy return on investment for various different energy sources

We're used to thinking about the cost per unit of energy (e.g. $/gallon of gasoline) with the implicit assumption that cost is a rough indicator of what is required to obtain that energy. The Oil Drum has a nice piece on Energy Return on Investment (EROI) and the implications of using low EROI energy sources. To dive right in, it's instructive to think about the EROI of domestic oil production as a function of time:100:1 in 193030:1 in 197011-18:1 in 2000EROI on the Web part 2 of 5, (Provisional Results Summary, Imported Oil, Natural Gas)Energy return on investment, sometimes called EROI and sometimes called EROEI, is thought by many, including myself, to be a critical issue for determining the past, present and future status of human society. It is usually considered in terms of energy return on energy investment, but it can also be considered in terms of energy return on monetary investment. While much of human progress has been attributed, rightfully, to technology, much of that technology has been a means of using more energy for human ends. This is true for fire, knife blades and spear points (energy concentrating devices), the development of agriculture and the increase in its productivity and, essentially all aspects of the industrial revolution.EROI is simply the energy delivered by an energy-obtaining activity compared to the energy required to get it. If the numerator and denominator are expressed in the same units (barrels per barrel, MegaJoules per MegaJoule) the result is a dimensionless ratio, i.e. 100:1 or 10:1). Obviously a higher ratio implies a more desirable fuel than a lower one, other things being equal (which is rarely the case). The concept is extremely simple in theory but often very difficult in execution, mostly because society generally maintains its records in monetary rather than energy terms. Another problem is that the U.S. Government has not supported such studies in a consistent fashion and it is my perception that the quality of some energy records as are kept by e.g. the U.S. Departments of Energy and of Commerce appear to be deteriorating in recent years. Thus deriving the energy cost of getting energy (or most other things) is generally somewhat, and oftentimes exceedingly, difficult. A second problem is that the usual measure of the quantity of a fuel, its heat value, often does not give a full assessment of that fuel's ability to do economic or other work. Most simply electricity and thermal heat from e.g. coal or oil have a great difference in their ability to do work, such as we are willing to trade three or four heat units of coal or oil in a thermal plant for one thermal unit of higher quality electricity. Thus if the input and output fuels are of different quality then it is often thought desirable to weight in some way the inputs and the outputs. A third problem is that it is important to consider boundaries: how large should we draw the boundaries of the energy analysis for the inputs? We will consider these issues in far more detail in later publications but there are many reasons why it is important to make summaries of EROI available at this time even though many uncertainties exist in the numbers that we present here, and indeed with any numbers that might be possible to generate.via jforbess

Topic by ewilhelm   |  last reply


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?

Topic by ewilhelm   |  last reply


Are carbon neutral fuels good for the environment? Answered

I'm sort of confused about carbon neutrality and it's impact on our environment. I feel like I'm over thinking it, but could someone explain to me what exactly makes a carbon neutral fuel clean? If it's clean burning at all? I'm interested in making biofuels specifically algae fuel, and this is a term that keeps popping up.

Question by thecoonskin   |  last reply


Carbon Monoixide Danger, Camping Heater?

Hello, I have recently bought a camping heater however i'm now unsure if i can use it. i bought it for my garden shed, i work in there building and fixing things. it gets cold in there some nights and i just use the heater for 30 mins or so. I installed a carbon monoxide alarm thought it was safe but im not so sure now.

Question by Daniel Deacon   |  last reply


High carbon steal annealing/tempering

First off, I'm not entirely where to post this nor if it has been posted elsewhere (i did do a quick check but i didn't spend too much time on that endeavor). So if this is not the correct/best place to post this i will move it and if it is elsewhere then i will delete it. This topic starts with a question from something I just recently did. I got a high carbon steel marking knife (its a Hock tool) and when i got it, it was bent and i heated it up to a nice red color, let it cool, tried bending it, and broke the tip off so i sharpened it back to a point and heated it up until it was no longer magnetic and heated it at 450F for about an hour. After doing this and checking some charts I was expecting a golden/brown color but instead got a blue color throughout most of it. So do i need to redo this or is it harder than i would expect from a blue colored steel? So I'm sure there are plenty of resources out there for figuring all this out but i was hoping this could be a centralized area for anyone to get all the information they need on this topic. what are some tips/tricks on annealing/heat treating/tempering iron, steel, and high carbon steels? is there a difference between the three  (annealing, heat treating, and temper)? what is the difference (if there is one)? what should someone expect from doing something like this? what would each color be useful for (which would be best for a drill bit or which would be best for woodworking tools etc.)? any tricks of the trade? any personal tricks that you wont find anywhere else? anything else to add? ANYTHING that is relevant would be helpful, im sure there are many people that could benefit from a list of tips from those who actually do these things. if i remember to do so i will post this blue marking knife that i'm talking about.

Topic by pmk222   |  last reply


Carbon Fiber over Fiberglass for fabric

When making a composite anything, what is the advantage of having carbon fiber instead of normal fiberglass? I was wondering because at US composites, the carbon fiber is almost 9 times more expensive that the fiberglass.

Topic by Ferrite   |  last reply


British Columbia introduces carbon tax

VICTORIA -- Driving and other fuel-dependent activities are about to get more expensive as British Columbia becomes the first jurisdiction in North America to introduce a consumer-based carbon tax.The carbon tax will apply to virtually all fossil fuels, including gasoline, diesel, natural gas, coal, propane, and home heating fuel. B.C.'s carbon tax, the provincial government claims, will be the most comprehensive in the world.full article

Topic by ewilhelm   |  last reply


Armex carbon arrows review and shooting!

I was wondering if I should buy these so I searched for a review and found none, so I bought them and made a review.. Enjoy :)

Topic by Assassin Tube   |  last reply


Carbon Fibre Flywheel (for energy storage)

I'd like to build a flywheel but I'm not sure what I need to know before i start, Is it difficult to do? Is it possible to accomplish with off the shelf parts? Any help at all would be appreciated greatly.

Topic by nuncoop   |  last reply


When Carbon Fiber Bikes Break

Not 100% sure how the rider fell (all sorts of stories), but when he did crash - this is the result. CF tubes broken in two places and 1 broken collar bone (a not too uncommon injury on bigger accidents). Just thought someone might be interested :)

Topic by trebuchet03   |  last reply


How do I make a carbon fibre pipe for an air intake?

Hello folks! I'm trying to figure out how I can make a carbon fibre pipe for my cars air intake. I have a semi-flexi alloy pipe which I have managed to bend into shape and it will keep its shape without changing even if I take it out of the engine bay. I was wondering how I would go about making a mould of the pipe to make a replica of it out of carbon fibre for ultra cool points. Plus Carbon fibre helps repel heat better than aluminium. I was originally just going to get a Carbon Fibre vinyl wrap around the pipe but, why fake it?

Topic by apmaman   |  last reply


100% of Electricity from Renewable and Non-Carbon Sources in 10 Years

In the best talk of the 2008 Web 2.0 Summit Al Gore called for president-elect Obama to make a man-on-the-moon-like pledge to generate 100% of the United States' electricity from renewable and non-carbon sources within 10 years. Al Gore is truly an amazing orator, and when he got fired up about the climate, renewable energy, energy independence, and how it could play a centerpiece of our economy, I got fired up and so did the rest of the audience. What really sent shivers down my spine was this observation: When Neil Armstrong first stepped on the moon, the average age of the control engineers running the mission from Houston was 26, making them 18 when Kennedy made his pledge in 1960.Generating 100% of our electricity from renewables and non-carbon sources in 10 years (let's call it 100-in-10) is the same caliber of challenge, but unlike getting to the moon -- which was something only a government could do at the time -- building a full economy of renewable energy should be orchestrated by the government, but requires the efforts of countless makers. I seem huge numbers of opportunities, both large and small, to make a difference and have impact. Get an engineering degree and invent a new type of powerplant, design and publish plans for low-cost DIY solar home heaters, be an advocate of renewable products and services. It's clear that a lot can happen in 10 years, and even if Obama doesn't call for 100-in-10, the time to make a difference is now. This is cross-posted on Makezine here.

Topic by ewilhelm   |  last reply


Europe Turns Back to Coal, Raising Climate Fears

Europe, with its smart cars, good public transportation, and high density, is often a beacon of hope for environmentally-conscious Americans. However, since coal remains a relatively cheap source of energy (at least in the short-term...), many European countries are turning to it as oil and gas prices rise, and concerns about energy stability and independence grow stronger. Europe Turns Back to Coal, Raising Climate FearsOver the next five years, Italy will increase its reliance on coal to 33 percent from 14 percent. And Italy is not alone in its return to coal. Driven by rising demand, record high oil and natural gas prices, concerns over energy security and an aversion to nuclear energy, European countries are expected to put into operation about 50 coal-fired plants over the next five years, plants that will be in use for the next five decades. The fast-expanding developing economies of India and China, where coal remains a major fuel source for more than two billion people, have long been regarded as among the biggest challenges to reducing carbon emissions. But the return now to coal even in eco-conscious Europe is sowing real alarm among environmentalists who warn that it is setting the world on a disastrous trajectory that will make controlling global warming impossible.

Topic by ewilhelm   |  last reply


expanded graphite heat-sink? Answered

Okay , I've searched and searched and cannot find what I'm looking for. Maybe the other diy'ers can help me. 1.What I'm looking for is a heat-sink made of expanded graphite or (carbon, graphite (∥) as it might be known as well) that is actually in the shape of a traditional aluminum heat-sink with the fins and NOT in the shape of thin film as it is very commonly available. I don't even know if it exists or is manufactured by any company. I've tried contacting some companies about it but they have yet to get back to me. The reason I want this is for the tremendous increase in heat conductivity as in this chart shown on this webpage http://physics.info/conduction/ . The application I am trying to use it for needs a raised, elongated surface area to displace heat semi-uniformly, hence why I need fins like a traditional heat-sink instead of the commonly available film expanded graphite online. 2. If it does exist or is able to be manufactured, would it be a ridiculously priced part or would it be a reasonable priced part? (Just doing small scale tests for now so it would be the size of a FET finned sink). 3. From what I've read it seems possible by maybe layering the films into a stacked lattice, keeping heat transfer perpendicular to the lattice, but what are your thoughts all? (I question bonding the layers myself but I don't know if you could hard press the layers together without a bonding agent since any bonding agent being used I believe would reduce the thermal conductivity quite a bit, but I'm not incredibly familiar with expanded graphite). Any and all help would be appreciated from this wonderful community Best regards, Velesh

Question by velesh   |  last reply


Kickstarter Space Engineer creates "real" Mithril

This is very, very cool. There's a Kickstarter project working on  space elevators, using carbon nanotube (CNT) technologies.  One of the supporters asked if they could buy enough CNT to make a pair of wedding rings, because they would outlast both gold and diamond. It turns out that, to be able to make a CNT wedding ring, you need the ability to build a space elevator. They found a compromise, though, and made a brand new material - they alloyed CNT with silver; A metallurgist with 25 years in the field has said that the new alloy has some “interesting” properties. There is a strange ‘crystallization’ to the metal once it cools. We don’t really know why; or what this means. It needs study. There is other ‘stuff’ about this alloy which lead in some exciting directions, but as yet, we have not explored those. In essence we’ve created a unique silver+carbon nanotube alloy. We would like to brand this material “Mithril” after J.R.R. Tolkien’s super-material in the Lord of the Rings… so far, the foundation’s branding people have not returned our calls. (According to their website, it’s an 8 week process.) For a long time during the design and creation of the rings, their existence was a secret.  Now, though, the groom has given these reasons for buying a pair of Mithril rings; Reason #1 - Use this line when you propose, "Many men promise their brides-to-be the stars. It's a very rare man that actually delivers." At which point you can explain the ring, and the potential bride is thusly wowed. Reason #2 - It REALLY shows that you're planning on a better world for your children - aka, you're awesome husband material. Reason #3 - Awesome conversation piece. Reason #4 - Someone shows off their gold ring, and you can say, "How quaint." Reason #5 - The working name for the metal is awesome. I won't say more without Michael's permission. But let's just say, the name is very... enchanting. When the people who see you hear what metal your ring is made of, they'll do a double-take and then demand more information. Reason #6 - There are very interesting properties to these rings that are fun to show off. Again, not going to go into detail without Michael's go ahead. Reason #7 - It's one thing to give a wedding ring to your loved one. It's a completely different thing to give a wedding ring to your loved one that's a piece of history. Reason #8 - Gold wears away easily, these rings may be able to be passed onto your great great grandkids. The full story is on the Liftport site,

Topic by Kiteman   |  last reply


carbon fiber felt, carbon fiber matting

Seeking a source for remnants carbon fiber felt, will use as combination wind screen chimney internal liner to prevent loss of heat to the environment can use piece sized 4 x 24 inches-minimum. thickness 5 mm, 7mm or better if possible. carbon fiber is usually sold by the sq. yd./meter- i know that carbon fiber felt exists but can't seem to locate same, free or cheap is best, thats why i'm looking for remnant material. thanking you for your help big al

Topic by big al 1048   |  last reply


Can you impregnante activated carbon into an air filter yourself?

Hi, I have a cabin air filter in my car.  Toyota sells activated carbon filters that helps absorb odours, but not for my  model car. i was wondering if its possible to impregnate the filter with activated carbon / activated charcoal myself somehow? thanks for any ideas!

Topic by hoobyjuice 


How do I connect a twisted copper lead to a carbon brush motor? Can it be soldered? Answered

The tiny wire connected to the carbon brush on my palm sander broke off right at the carbon brush. Is this solder-able? The 3/8" bit of wire is connected to a blade connector on one end and used to be connected to a small depression on the side of the brush. Thanks for any advice.

Question by aeray   |  last reply


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.

Question by Paintballer98   |  last reply