THE DISCOVERIES of X-RAYS by ROENTGEN and DIFFRACTION by von LAUE B.W. Batterman, Applied & Engineering Physics, CHESS, Cornell University, Ithaca, New York.

It took 17 years after Roentgen's discovery of X-Rays in 1895 until the realization and verification that X-Rays were a form of light whose wavelengths were comparable to the spacings between atoms in crystals.

Laue's experiment showed that X-Rays are diffracted by crystals and gave birth to the field of X-Ray Crystallography, which provides us jobs, consumes our interest, and brings us to Seattle.