transverse motion
71Joint — For other uses, see Joint (disambiguation). Typical Joint A joint is the location at which two or more bones make contact.[1] They are constructed to allow movement and provide mechanical support, and are classified structurally and functionally …
72Human anatomical terms — make up a distinct nomenclature to describe areas of the body, to provide orientation when describing parts of human anatomy, cite web | url=http://www.bartleby.com/107/1.html| title= Introduction page, Anatomy of the Human Body . Henry Gray.… …
73Sound — This article is about audible acoustic waves. For other uses, see Sound (disambiguation). In a drum sound is produ …
74optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
75Orbital speed — Not to be confused with Escape Velocity. The orbital speed of a body, generally a planet, a natural satellite, an artificial satellite, or a multiple star, is the speed at which it orbits around the barycenter of a system, usually around a more… …
76Normal mode — For other types of mode, see Mode (disambiguation). Vibration of a single normal mode of a circular disc with a pinned boundary condition along the entire outer edge. See other modes. A normal mode of an oscillating system is a pattern of motio …
77Lorentz ether theory — What is now called Lorentz Ether theory ( LET ) has its roots in Hendrik Lorentz s Theory of electrons , which was the final point in the development of the classical aether theories at the end of the 19th and at the beginning of the 20th century …
78earthquake — /errth kwayk /, n. 1. a series of vibrations induced in the earth s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. 2. something that is severely disruptive; upheaval. [1300 50; ME erthequake …
79Visual cortex — Brain: Visual cortex View of the brain from behind. Red = Brodmann area 17 (primary visual cortex); orange = area 18; yellow = area 19 …
80Motorcycle engine — A Honda Super Cub engine. The most popular motorcycle in history, with over 60 million produced …
