X- ray – The unknown ray

Some inventions take birth when trying for other inventions. The X-ray invention is also one such invention invented by Wilhelm Rontgen in 1895. He was experimenting with the cathode rays and wanted to check whether it could pass from the glass, he was using a Crookes tube which is wrapped in black cardboard and observing the fluorescent screen coated with Barium platinocyanide. Surprisingly he observed a faint green glow from the screen and he found that the rays are even able to travel through the books and papers on his shelf, he immediately named them as X -rays (as he was not sure what those rays are). Later, the X-rays have had helped the patients and doctors a lot.