speed light
31Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) …
32Speed of gravity — In the context of classical theories of gravitation, the speed of gravity refers to the speed at which a gravitational field propagates. This is the speed at which changes in the distribution of energy and momentum result in noticeable changes in …
33Light rail — For specific light rail systems, many of which use the words light rail as part of their name, see List of tram and light rail transit systems. Edmonton Light Rail Transit in Edmonton, Alberta, Canada …
34speed — speedful, adj. speedfully, adv. speedfulness, n. speedingly, adv. speedingness, n. speedless, adj. /speed/, n., v., sped or speeded, speeding. n. 1. rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity: the …
35Light-year — For other uses, see Light year (disambiguation). Image showing the scale of a light year (outer shell) and a light month (inner shell) surrounding the Sun compared to Comet 1910 A1 s orbit (yellow line) and Comet Hyakutake s orbit (orange line).… …
36Light gas gun — The light gas gun is an apparatus for physics experiments, a highly specialized gun designed to generate very high velocities. It is usually used to study high speed impact phenomena (hypervelocity research), such as the formation of impact… …
37Speed of sound — Sound is a vibration that travels through an elastic medium as a wave. The speed of sound describes how much distance such a wave travels in a certain amount of time. In SI Units with dry air at 20 °C (68 °F), the speed of sound is 343 m/s. This… …
38Speed — This article is about the property of moving bodies. For persons named Speed, see Speed (name). For the film, see Speed (1994 film). For other uses, see Speed (disambiguation). Classical mechanics …
39Speed limits by country — Main article: Speed limit A road speed limit is the limit of speed allowed by law for road vehicles, either maximum limit or minimum limit. Speed limits are commonly set by the legislative bodies of national or local governments. Contents 1… …
40Speed of light (disambiguation) — The speed of light is an important physical constant used in science. Speed of light or Speed of Light may also refer to: * Speed of Light , a song by Orchestral Manoeuvres in the Dark in their album Sugar Tax . * Speed of Light , a song by… …
