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.
George Washington Carver's inventions earned him great respect and honor from contemporary inventors, Edison and Ford. Edison offered Carver a much higher paying job at Menlo Park as a research scientist. George refused Edison's offer, and stayed at Tuskegee Institute until Carver died on January 5, 1943.