potato chips
2006-07-03 23:04:59
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answer #1
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answered by Bastet's kitten 6
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During 1895 Röntgen was using equipment developed by his colleagues (reputedly, Ivan Pulyui personally presented one (the 'Pulyui lamp') to Röntgen, but Röntgen went on to be credited as the major developer of the technology), Hertz, Hittorf, Crookes, Tesla, and Lenard to explore the effects of high tension electrical discharges in evacuated glass tubes. By late 1895 these investigators were beginning to explore the properties of cathode rays outside the tubes. In early November Röntgen was repeating an experiment with one of Lenard's tubes in which a thin aluminum window had been added to permit the cathode rays to exit the tube but a cardboard covering was added to protect the aluminum from damage by the strong electrostatic field that is necessary to produce the cathode rays. He knew the cardboard covering prevented light from escaping, yet Röntgen observed that the invisible cathode rays caused a fluorescent effect on a small cardboard screen painted with barium platinocyanide when it was placed close to the aluminum window. It occurred to Röntgen that the Hittorf-Crookes tube, which had a much thicker glass wall than the Lenard tube, might also cause this fluorescent effect.
In the late afternoon of November 8, 1895, Röntgen determined to test his idea. He carefully constructed a black cardboard covering similar to the one he had used on the Lenard tube. He covered the Hittorf-Crookes tube with the cardboard and attached electrodes to a Ruhmkorff coil to generate an electrostatic charge. Before setting up the barium platinocyanide screen to test his idea, Röntgen darkened the room to test the opacity of his cardboard cover. As he passed the Ruhmkorff coil charge through the tube, he determined that the cover was light-tight and turned to prepare the next step of the experiment. It was at this point that Röntgen noticed a faint shimmering from a bench a meter away from the tube. To be sure, he tried several more discharges and saw the same shimmering each time. Striking a match, he discovered the shimmering had come from the location of the barium platinocyanide screen he had been intending to use next.
Röntgen speculated that a new kind of ray might be responsible. November 8 was a Friday, so he took advantage of the weekend to repeat his experiments and make his first notes. In the following weeks he ate and slept in his laboratory as he investigated many properties of the new rays he temporarily termed x-rays, using the mathematical designation for something unknown. Although the new rays would eventually come to bear his name when they became known as Röntgen Rays, he always preferred the term x-rays.
2006-07-06 09:06:04
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answer #2
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answered by I am rock 4
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the LASER is considered to be the first object invented that was invented without a specific reason or goal in mind. The MASER was an outgrowth of RADAR technology trying to find a higher frequency. LASERS was the optical version but had no specific reason for being invented
2006-07-09 17:50:05
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answer #3
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answered by Anonymous
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Archimedes principle : quantity of water displaced from the tub is same as that of the weight we used to displace it .he discovered it when he was taking his bath.
PI in mathematics 22/7; discovered by newton ;
when his school teacher scolded him because he was asking silly questions he went out of the class . he drew several circles and started measuring it's circumference using a thread and he divided that value with it's diameter and found that it is a constant.the value was 22/7;
newton's gravity;
from an apple tree;
2006-07-04 05:39:55
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answer #4
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answered by ? 2
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Physics: Becquerel's discovery of radioactivity.
Biology/Medicine: Fleming's discovery of penicillin.
2006-07-04 05:34:00
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answer #5
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answered by Flyboy 6
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The microwave for cooking.
Explosives, but the real inventor couldn't be found after the initial test... whoops!
Reeses peanut butter cups, two people ran into each other, one had chocolate and the other had peanut butter.
2006-07-04 05:35:33
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answer #6
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answered by madbaldscotsman 6
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Vulcanized rubber (Charles Goodyear).
Polycarbonate plastic [Lexan].
Radioactivity.
Penicillin (Alexander Fleming).
Magnetic field created by electricity.
Electrochemical production of electricity (Alessandro Volta).
Cosmic background radiation.
2006-07-04 05:54:39
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answer #7
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answered by Anonymous
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Teflon was an accidental discovery oh and neutra sweet
2006-07-04 05:32:33
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answer #8
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answered by adobeprincess 6
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Photography
I think the teklephone was not accidental, Graham Bell was trying for a while to make it.
2006-07-04 05:33:56
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answer #9
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answered by cpinatsi 7
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Gravity is faster than the speed of light
2006-07-04 05:32:06
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answer #10
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answered by 22 2
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viagra was actually in development for increased blood flow for people who had heart disease with clogged arteries
2006-07-04 05:36:04
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answer #11
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answered by butchdalton 4
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