Thornton, William E. (William Edgar), 1929-2016-03-182016-03-181972http://hdl.handle.net/2152.3/616Photograph of the "SMMD" (Specimen Mass Measurement Device) that was used to gather measurements of the human body's response to weightlessness during the SMEAT Skylab simulations.Space medicine.Space flight--Physiological effect.Weightlessness--Physiological effect.Skylab Program.Image