speed of light
21Light cone — in 2D space plus a time dimension. A light cone is the path that a flash of light, emanating from a single event (localized to a single point in space and a single moment in time) and traveling in all directions, would take through spacetime. If… …
22Light-time correction — is a displacement in the apparent position of a celestial object from its true position (or geometric position ) caused by the object s motion during the time it takes its light to reach an observer.Light time correction occurs in principle… …
23Light writing — is an emerging form of stop motion animation wherein still images captured using the technique known as Light painting or light drawing are put in sequence thereby creating the optical illusion of movement for the viewer. [cite web… …
24light velocity — speed of light, distance that light travels within a given unit of time (approximately 299, 792.5 m per sec/186, 200, 000 miles per second) …
25at the speed of light — traveling/acting at the same speed in which sunlight travels, extremely fast …
26light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …
27Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) …
28Speed 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 …
29speed — 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 …
30Light-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).… …
