Google have just changed its loge to celebrate the 115th anniversary of the Discovery of the X-Rays.
Just go back to past and you found that, On November 8, 1895, German physicist and Professor Wilhelm Rontgen discovered the use of X-ray in medicine when he saw a picture of his wife’s hand on a photographic plate. Rontgen was credited as discoverer of X-ray because he is the first to systematically study the effects of such form of electromagnetic radiation.
X-rays plays the major role in medical applications and advanced technology played the great role to extend the use of the X-rays. You can learn more about X-rays from Wikipedia.