THESE days, everyone knows what an X-ray is. It’s a way to take pictures of the inside of your body. Here’s more about it.
AN ‘ACCIDENT’
In the late 1800s, was experimenting with what happens when an electric current passes through an extremely low-pressure gas. In 1895, while he was doing an experiment in Würzburg, Germany, he noticed that if his discharge tube (through which the electricity passed) was wrapped in black cloth to keep out light, a paper plate with one side covered in the chemical barium platinocyanide . In further experiments, he found that objects of different thickness put in the path of the rayswhich he could photograph. Because he had no idea what these rays were, he
