Hand Film

I think this picture is fantastic. It's a print of one of the first X-rays, taken by Wilhelm Rontgen. The hand belongs to his wife Anna and was taken in 1895 and presented at the Physik Institut, University of Freiburg. Although the image itself might not be all that impressive, I'm astounded that just over a century later, we've transformed this into a critical medical field with rapidly changing technology and greater and greater precision. Image is in the public domain, taken from Wikipedia.