Country of origin: Mexico
In 1948, along with Stanford University professor Paul Kirkpatrick (1894–1992), Baez developed the X-ray reflection microscope for examination of living cells. This microscope is still used today in medicine. Baez received his PhD in physics from Stanford in 1950. After graduating, he developed zone plates—concentric circles of alternating opaque and transparent materials to use diffraction instead of refraction to focus X-rays. Unfortunately, much of his work had to await the development of synchrotron X-rays sources several decades later.
You can read more about Albert Baez at wikipedia.