X-rays are basically a form of electromagnetic radiation that allows to look inside a body without cutting open. Wilhelm Rontgen, a German physicist, is generally given the credit for having invented X-rays. He was the first person to have studied the details of X-rays minutely and also observed the effects of them. In fact, he is the only person who has coined the term X-ray, which actually refers to the ‘Rontgen rays’. Wilhelm Rontgen is said to be the first man to study the various effects of the cathode rays systematically in the year 1895. While experimenting with electrical currents, he found out that barium platinocyanide glowed although the tube was covered in a thick cupboard across the room. He didn’t completely understand this discovery; therefore, he named it X-rays for the unexplained nature. The usage of X-rays became popular in the late 19th century by the British people.