What is X-Ray?
An X-ray device is basically a camera. But unlike an ordinary camera where visible light exposes the film, an X-ray uses x-rays instead. X-rays are like visible light waves like visible light but they have a higher energy level and therefore can pass through different materials. When an X-ray transmits rays through the human body and onto a film, bones, fat, muscles and other tissues absorb the rays with different degrees. This helps X-Ray device picturing the interior parts of the body on the film. The bones of the body absorbs the X-rays best and therefore bones are clearly seen on the X-ray film.
Who invented X-rays?
X-rays were first used by a German physicist Wilhelm Conrad Röntgen. In 1895,during a test with other rays, he suddenly discovered that a fluorescent screen in his laboratory was lit up, every time he lit the rays. This was happening despite the fact that the radiation source was surrounded by thick black cardboard. Then he placed several different things between the radiation discharge tubes and the screen and discovered that it was continuing to light up no matter what he did. Eventually, he placed his wife’s left hand in front of the rays from the discharge tube and, to his surprise, saw that a silhouette of the bones lit up on the screen. The 50-year-old professor gave the new phenomenon the name X-rays. In the English-language part of the world, it is still known as X-ray. In 1901, Wilhelm Conrad Röntgen received the first Nobel Prize in Physics for the discovery of X-Ray.
Are X-rays Harmful?
X-rays may be dangerous only for prolonged exposure because they emit radiation during the process. Therefore, people who work a lot with x-ray should always be out of the filming room during taking films with Xray. Operators room should be covered with lead in order to protect operator from the radiation.
X-ray sources do not naturally exist on Earth.