2012年7月18日星期三

The history of fluoroscopic equipment

Early X-ray instrument important researchers have IvanPului professor, William KeLuKeSi jazz, John William and Cardiff, "EugeneGoldstein, heinrich Rudolf Hertz, Philip, nader, helmholtz, nicola tesla's and Edison, CharlesGloverBarkla, Marx von labor eritrea and William konrad rontgen. Physicists and Cardiff observed in the vacuum tube "a cathode ray. When these rays meet glass wall will produce the fluorescence. 1876 this radiation is EugeneGoldstein named "cathode ray". Later, British physicist KeLuKeSi research in the rare gas energy release, and creating KeLuKeSi tube. This is a kind of glass vacuum tubes, inside can produce high voltage electrode. He also found that, when will not exposure photo film near the pipe, some parts were photographic, but he did not continue to study this phenomenon.
In April, 1887, nicola tesla's started to use the design of your own high voltage vacuum tubes and crookes tube research X-ray. He invented the single electrode X-ray tube in which electronic through the material, happened now called the radiation effect of toughness and generate the high-energy x-rays. 1892 tesla's complete these experiments, but he didn't use the X-ray of this name, but only general be radioactivity. He continue the experiment, and remind the scientific community note of cathode rays of organisms harmfulness, and he did not open his experiment results. 1892 hz experiment, puts forward the cathode ray can penetrate through the very thin metal foil. Hertz students Leonard further study the effect, to many metal carries out the experiment. Helmholtz is the light of the electromagnetic nature mathematical deduction. November 8, 1895 a German scientist, Wilhelm konrad rontgen cathode rays began the research. December 28, 1895 he completed a preliminary experiment report "a new rays". He put the results published in the sPhysical-MedicalSociety wuerzburg 'magazine. In order to show that this is a new kind of rays, said the unknown by Wilhelm roentgen X for name. Many scientists claim named rontgen rays, roentgen himself firmly opposed, but this one name is still use.
In 1901, Wilhelm roentgen won the Nobel Prize for physics. 1895 Edison research material X light in a fluorescent ability, found that most obvious tungsten acid calcium. In March 1896, Edison invented the fluorescence sight tube, were later used in medical equipment X-ray examination. But 1903 years Edison terminated his X-ray study. Because of his company a glass workers like will X-ray tube on hand inspection, on the cancer, in spite of the amputation surgery still can't save lives. In 1906, physicist BeiKeLe ear found X-ray instrument can be gas scattering, and each element has its characteristics X spectrum line. So he won the 1917 Nobel Prize in physics. In the 1980 s, X-ray instrument most are portable X-ray machine, laser is set to Ronald Reagan's strategic defense initiative to part of the program. But to the device (a kind of similar laser cannons, or death ray, thermonuclear reactions by device provide energy) first, is also the only test and have not given conclusive results. At the same time, because of political and technical reasons, and the overall plan (including X-ray instrument laser) hold (however the plan then was to restart-use different technology, and as President bush national missile defense plan part). In the 1990 s, Harvard University established ChandraX X-ray instrument observatory to observation of the astronomical phenomena in the universe, strong production in X-ray detector. And from visible light observations of relative stability of different universe, from the X-ray observations of the universe is is not stable. It was to show people how stars by a black hole thinly, galactic collisions, the supernova and neutron stars.

Article : From Perlong medical (http://www.pl999.net/)
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