Brian S Television W Tinfoil Project

2 page paper-

For science class we had to make a hot plate hot enough to boil water. This required a motor to make the electricity heat the hot plate. Each of the four people in our group had to think up and test a different kind of motor. I chose to try to figure out how to make aluminum foil on the screen of a television generate electricity. I finally figured out how to make it work on my third day of research! I found out on http://www.worsleyschool.net/science/files/popcan/motor.html that if you put two cans next to each other and then ran wire from one can to the tin foil attached to the screen of the television. Then attach another wire from the tin foil to an electrical ground and place a plastic rod: like a pen over the top of the two like a bridge, then last tie a string in the middle of the pen to a pull tab found on the top of soda cans onto the other end of the string (allowing it to hang about five inches from the pen,) it will make the pull tab move from side to side hitting each can for a long time. So long as the television is turned on this will supposedly keep hitting the two cans forever! There is a reason behind why this odd motor works the way it does. First of all, you have to understand that when you shut off or turn on the television it creates extra electrons. These electrons are left over ones from creating the picture. When the tin foil is on the television screen, it will take in all of the extras electrons. Metal is a conductor of electricity, so tin foil will take it all. The tin foil will also stick to the screen because of the electrons constantly being released from the screen. The wire connected to the tin foil and one of the two cans will bring all of the negatively charged electrons into the can. On the other side of this is the other wire connected to the opposite can which is connected to you. (No, this does not hurt, I have already tried it, and it only feels like a static shock) Opposite charges attract, and alike charges repel. That is why this works so brilliantly! Humans are filled with positive charges and it goes straight from you to the can you are connected to through the metal wire. The cans are only just far enough away that the positive charges in one can, and the negative charges in the other can not jump to the other. Charges are constantly trying to make everything equal. That is why when you rub your feet on a rug and touch somebody else, you electrocute them. The electrons are literally jumping from you to them: evening out your electrons and theirs! The only way for the two opposite charges to get to each other is to use the metal pull tab to jump across like Tarzan. Once you turn the television on, the fun begins! The negative electrons jump from the can attached to the TV, to the metal pull tab. Once they jump, they pull the metal tab over to the positively charged can. Once the metal tab collides with the other can, the positives jump off and run up the wire into you, meanwhile the negative charges get onto the metal pull tab. (This happens in only a split second.) once the tab is full, they are pushed away from the can they are at, because alike charges repel each other. They are pulled and pushed toward the television can. Once they get there, the positives run down the wire to the television, at the exact same time, the negatives climb aboard and are pushed off because (once again) alike charges repel. Once the metal tab collides with the other can again, the positives jump off and run up the wire into you, meanwhile the negative charges get onto the metal pull tab, once again! Since you are never going to “run out” of positive charges, and the television keeps on making more negatives, the cycle will continue forever until either you let go, or the television is shut off. (It’s also cool because it makes a cool clinking sound when the tab hits the cans.)This is how the tinfoil and TV motor works.

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