Waves can also be separated into transverse and longitudinal waves. In a transverse wave, the motion of the particles of the medium is at right angles (i.e., transverse) to the direction the wave moves.
The experiment's name comes from the Tuskegee Institute, the black university founded by Booker T. Washington. Its affiliated hospital lent the PHS its medical facilities for the study, and other predominantly black institutions as well as local black doctors also participated.
It was established by Booker T. Washington. The campus is designated as the Tuskegee Institute National Historic Site by the National Park Service and is the only one in the U.S. to have this designation. The university was home to scientist George Washington Carver and to World War II's Tuskegee Airmen.