Wilhelm Roentgen, x-rays.

In 1895 a German physicist discovered the x-rays. X-rays give you and inside look on a suit case and the human body. The suit case is good for security offerces in the airport to make sure they are not taking in bombs or any other ilegal substance. The human body is good to find broken bones as it only brings out the bones. Because of this discovery Wilhelm Roentgen was awarded the first ever noble prize in physics, in 1901.