Body worlds is a popular exhibition that I visited as a kid. It is absolutely amazing! Gunther von Hagens came up with the idea of taking water and fat from human bodies and replacing them with plastic. He was dismissed as a failure by some people. However, his exhibition lets us see what the human body looks like in 3-D. He preserved different body parts in plastic that viewers can look at and learn about the human body.
There are a lot of amazing medical technologies that have allowed people to find out what is going on in side our bodies. X-rays are used in manufacturing, airports, medical tests, etc. In 1895 Wilhelm Conrad Roentgen created x rays. He earned the first nobel peace prize in physics.
Raymond Vahan Damadian tried to make x rays safe. He ended up creating the MRI scanner. It took 5 hours to produce one image. A CAT scan was also invented; it Creates a 3-D image of internal organs