About1895165438+1October 8, when Roentgen, president of the University of Wü rzburg, Germany, conducted a cathode ray experiment, he observed the light emitted by the fluorescent screen coated with blue platinum and barium near the ray tube. Finally, he was convinced that it was an unknown new type of ray and called it X-ray. After several weeks of intense work, Roentgen also found that X-rays can cause the fluorescence of many other chemicals except barium phosphate, because it can penetrate many substances that ordinary light cannot penetrate.
Especially through muscles rather than bones, so when Roentgen puts his hand between the cathode ray tube and the screen, he can see his hand bones on the screen. Unlike charged particles, X-rays move in a straight line and will not move because of the influence of magnetic field. Only four days after the X-ray was discovered, American doctors used it to find a bullet in the patient's leg.
Therefore, users of this activity are flocking, and many entrepreneurs are flocking. Then they paid a high price for X-ray technology, 500 thousand yuan or 1 10 thousand yuan, and their price is getting higher and higher, even if it is 1 10 thousand yuan. Roentgen said with a faint smile, my discovery belongs to all mankind, and he hopes that this discovery can be used by scientists all over the world.
Why X-rays can cause more than ten Nobel prizes in science is explained here today.