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Michigan Teen Creates Fusion Device
Josh Lindenmuth writes "The Detroit Free Press is reporting that Thiago Olson, a 17 year old Michigan teen, was able to create a small fusion device in his parents' basement. The machine uses a 40,000 volt charge and deuterium gas to create the small reaction, which he says looks like a 'small intense ball of energy.' The teen's fusion device is obviously not a self-sustaining reactor, but it still shows how fusion technology is becoming more accessible. Hopefully this points to a future where large scale fusion reactors are both economical and widely used."
Fusion is easy to verify: Deuterium-Deuterium fusion spits out a proton at a well know energy level (3ish MeV) and a tritium atom.
Deuterium-Tritium fusion spits out a neutron at a well know enegery level (14ish MeV), and a helium. With the appropriate gear either the proton or the neutron are easy to spot/measure.
You can get Deuterium Oxide from http://www.unitednuclear.com/chem.htm (and probably many other chemical suppliers) from which you can make deuterium gas.
I know this is off-topic, but when I hear people refer to the NRA as overheated and overpoliticized gun owners, I sigh, and think, "They didn't used to be...."
I remember when I was in Boy Scouts during the 1970's and I took the dreaded "Rifle and Shotgun" merit badge.
Back then, the NRA was a gun safety and training organization. They struck everyone as being straight-forward and calm, more interested in making sure that people knew how to prevent gun accidents and how to responsibly own firearms.
Then things changed, and they transformed themselves into a political organization - and now they're either seen as "the safeguard of the American way" or "crazy gun-toting fascists," depending on whose overheated rhetoric was heard last.
Perhaps this should be seen as a warning to other groups - once you enter the political fray, you become a political animal. Or in the words of the Punisher, "The means always screws up the ends."
Strike while the irony is hot! -- The Freethinker
TVs have very dangerous capacitors. The function of capacitors that you unhappily discovered is something like a temporary battery.
See, a real battery can only push so much energy out per second (I think batteries are usually defined in milliamp hours (mAh)). So what you do is you start pushing charge (electrons) onto a capacitor, and then when you need a real big quick burst of energy (like, say, to shoot an electron at a TV screen) the cap can give you that high amount of current or voltage very quickly.
Another use is to smooth power signals. You're getting sent AC voltage in the wall, which oscillates above and below zero volts. This gets rectified at the home so that it's either above or at 0 volts. Then, this gets filtered through a series of capacitors (and lots of other stuff, too; Zener diodes FTW) to provide (more) consistent voltage, instead of a rising and falling voltage. In essence, it's acting as a battery for us while the voltage is lower than what the circuit needs.
Capacitors are also very important in analog filters and a lot of other Electrical Engineering voodoo.
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This is a Farnsworth Fusor. See Wikipedia at: http://en.wikipedia.org/wiki/Fusor/ for info on this type of device, which is VERY OLD, reasonably well-characterized, and most definitely NOT an energy-generation device.
Fusors use far more power than they generate. The idea is a pair of spherical grids charged to 50K volts differential. Deuterium gas is a welding supply item. Gas hits the outer grid, ionizes, and is propelled at ultra-high speed to the exact center of the grid.
The drawback is the inefficiencies: There is no known design (and some theoretical work saying it is impossible to a achieve such a design) which does not have significant heat losses to impacts of the gas on the inner grid. This generates random gas, which impedes the movement of the ions, etc.
It is also known as Electrostatic fusion.
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