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A Micronesian navigational chart from the Marshall Islands, made of wood, sennit fiber and cowrie shells. Stick chart in Überseemuseum Bremen. Stick charts were made and used by the Marshallese to navigate the Pacific Ocean by canoe off the coast of the Marshall Islands. The charts represented major ocean swell patterns and the ways the ...
Wave maps equation. In mathematical physics, the wave maps equation is a geometric wave equation that solves. where is a connection. [1] [2] It can be considered a natural extension of the wave equation for Riemannian manifolds. [3]
Polynesian navigators thus employed a wide range of techniques including the use of the stars, the movement of ocean currents and wave patterns, the patterns of bioluminescence that indicated the direction in which islands were located, the air and sea interference patterns caused by islands and atolls, the flight of birds, the winds and the ...
waze .com. Waze Mobile Ltd, [2] ( / weɪz /; Hebrew: ווייז מובייל בע"מ) doing business as Waze ( Hebrew: ווייז ), formerly FreeMap Israel, is a subsidiary company of Google that provides satellite navigation software on smartphones and other computers that support the Global Positioning System (GPS). In addition to turn-by ...
In physics, a wave vector (or wavevector) is a vector used in describing a wave, with a typical unit being cycle per metre. It has a magnitude and direction. Its magnitude is the wavenumber of the wave (inversely proportional to the wavelength ), and its direction is perpendicular to the wavefront. In isotropic media, this is also the direction ...
Sinusoidal projection. Sinusoidal projection of the world. The sinusoidal projection is a pseudocylindrical equal-area map projection, sometimes called the Sanson–Flamsteed or the Mercator equal-area projection. Jean Cossin of Dieppe was one of the first mapmakers to use the sinusoidal, using it in a world map in 1570. [1]
The Wilkinson Microwave Anisotropy Probe ( WMAP ), originally known as the Microwave Anisotropy Probe ( MAP and Explorer 80 ), was a NASA spacecraft operating from 2001 to 2010 which measured temperature differences across the sky in the cosmic microwave background (CMB) – the radiant heat remaining from the Big Bang.
Line-of-sight propagation. Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves can only travel in a direct visual path from the source to the receiver without obstacles. [1] Electromagnetic transmission includes light emissions traveling in a straight line.
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