What is "yerkes"

Yerkes is a lunar crater near the western edge of Mare Crisium. In the past the interior of this crater has been almost completely inundated by lava, leaving only a shallow remnant of a rim above the mare. The rim is widest on the western and southern portions, and barely existent to the east, forming a thin curve in the surface. A low ridge runs from the north rim to Yerkes E in the north-northwest. The floor has a similar albedo to the nearby mare, so the feature is not sharply distinguished from the surroundings. To the east of Yerkes is the crater Picard, and farther to the north is Peirce.

Yerkes is a surname. Notable people with the surname include:

• Charles Yerkes (1837–1905), American financier who played a major part in developing mass-transit systems in Chicago and London
• Stan Yerkes (1874–1940), American professional baseball pitcher
• Robert Yerkes (1876–1956), American psychologist, ethologist, and primatologist
• Mary Agnes Yerkes (1886–1989), American Impressionist painter, photographer, and artisan
• Steve Yerkes (1888–1971), American baseball player
• Carroll Yerkes (1903–1950), American professional baseball pitcher
• Bob Yerkes (1932-), American stuntman

Yerkes may also refer to:

• Yerkes, Kentucky
• Yerkes Observatory, an astronomical observatory of the University of Chicago
  • Yerkes luminosity classification of stars
  • Yerkes scheme of galaxy morphological classification
• Yerkes National Primate Research Center, one of eight national primate research centers funded by the National Institutes of Health, located in Atlanta, Georgia at Emory University
• Yerkes–Dodson law, an empirical relationship between arousal and performance first noted by Robert M. Yerkes and John Dillingham Dodson
• 990 Yerkes, main belt asteroid