refraction time
51Earth exploration — Introduction the investigation of the surface of the Earth and of its interior. By the beginning of the 20th century most of the Earth s surface had been explored, at least superficially, except for the Arctic and Antarctic regions. Today the… …
52Dispersion (optics) — This article is about dispersion of waves in optics. For other forms of dispersion, see Dispersion (disambiguation). In a prism, material dispersion (a wavelength dependent refractive index) causes different colors to refract at different angles …
53Plus haut sommet du monde — Le plus haut sommet du monde par rapport au niveau de la mer est reconnu depuis 1856 comme étant l Everest dans l Himalaya, à 8 848 m d altitude. Sommaire 1 Altitude des montagnes 2 Antiquité 3 Moyen Âge …
54Slow light — is the literal slowing of the speed of light. It is the propagation of an optical pulse or other modulation of an optical carrier at a very low group velocity. The term is usually only applied when the velocity is at least hundreds of times… …
55Histoire évolutive de l'œil — L œil est un système sensoriel utilisé dans l ensemble du règne animal. En effet, la lumière donnant un grand nombre d informations sur l environnement, elle est, et a été, une force sélective majeure, qui a conduit à la formation d une grande… …
56Mild-slope equation — Simulation of wave penetration involving diffraction and refraction into Tedious Creek, Maryland, using CGWAVE (which solves the mild slope equation). In fluid dynamics, the mild slope equation describes the combined effects of diffraction and… …
57Ionosphere — The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner …
58Venous Translucence — Venous translumination or translucence, has been applied in phlebology since 1996 by the surgeon Pedro Fernandes Neto, during ambulatory clinical exams (Brazil). The results were registered in annals of national and international congresses of… …
59Tycho Brahe — This article is about the astronomer Tycho Brahe. For other uses, see Tycho Brahe (disambiguation). Tycho Ottesen Brahe Born 14 December 1546 Knutstorp Castle, Scania Died 24 October 1601 (age …
60Wave–particle duality — Quantum mechanics Uncertainty principle …
