trailing wave
41Group velocity — [ Frequency dispersion in bichromatic groups of gravity waves on the surface of deep water. The red dot moves with the phase velocity, and the green dots propagate with the group velocity. In this deep water case, the phase velocity is twice the… …
42Surfboard — For other meanings see Surfboard (disambiguation). A stack of boards in Waikiki during a surf competition …
43Drag (physics) — Shape and flow Form drag Skin friction 0% 100% 10% 90% …
44North Carolina Tar Heels football — Current season 97pxpx …
45Mark Foo — Personal information Born February 5, 1958 Singapore Died December 23, 1994( …
46Atmospheric reentry — refers to the movement of human made or natural objects as they enter the atmosphere of a planet from outer space, in the case of Earth from an altitude above the edge of space. This article primarily addresses the process of controlled reentry… …
47Laser Interferometer Space Antenna — For other uses of this acronym, see LISA (disambiguation). Laser Interferometer Space Antenna Artist s conception of LISA spacecraft Operator ESA, NASA Satellite of Sun The Laser Interfe …
48United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …
49Bomb — A bomb is any of a range of devices that typically rely on the exothermic chemical reaction of an explosive material to produce an extremely sudden and violent release of energy. (A nuclear weapon employs chemical based explosives to initiate a… …
50Operation Bulmus 6 — Part of the War of Attrition Date July 19, 1969 Location …
