Lyman G. Parratt (May 17, 1908 - June 29, 1995) was an American physicist.
He is known for various research using x-rays.
[1] Parratt was born in Salt Lake City.
In 1954, Parratt used x-rays to explore the surface of copper-coated glass, thereby creating the field of X-ray reflectometry.
[2] He died in Redmond, Oregon, aged 87.