The+History+of+X-Rays

Miller, A. (2003, April 14). //The History of the X-Ray//. Retrieved August 24, 2010, from Mary Washington college: http://www.umw.edu/hisa/resources/Student%20Projects/Amy%20Miller%20--%20X-Ray/students.mwc.edu/_amill4gn/XRAY/PAGES/invent.html -"Wilhelm Conrad Roentgen was the scientist that accidentally discovered the x-ray." -"on september 8th 1895 Roentgen was in his lab investigating the properties of cathode rays." -"he had decided to repeat some of lenard's and hertz's exsperaments hypothesizing that the rays had always penetrated the glass"   -"tube, but where previously undetected." -"in order to test this, he covered the tube with black cardboard in a darkened room and supplied the electric current." -"he had forgotten to put a screen directly in front of the tube." -"nonetheless, a greenish yellow glow appeared on a cardboard screen that was lying on a chair several feet away from the tube." -"the startled Roentgen started to see that not only the the screen was glowing not inches, but feet, away from the tube, but glowing in the shape of the letter "A", which a student had written on the cardboard in liquid barium platocyanide." -"amazed, roentgen placed the screen several feet in front of the tube and tested it again." - "once again, the screen began to glow. he then placed a deck of cards and a two inch book between the tube and the screen. he discovered the ray could penetrate through these materials." - "a small wooden box containing metla weights was also used but he found that the ray also didn't go through the entire box; it only cast as shadow of the weights upon the screen." - for the next month roentgen dedicated every free moment to investigating the phenomenon. on reflection, he stated, "i didn't think, I investigated""   -"in december, another huge discovery was made: while holding up a lead pipe to the ray, the bones of his fingers were shadowd on the screen."    -"unable to believe his eyes, roentgen decided to show his wife what had occupied his time, resulting in the famouse X-ray image of her hand."