8/14/2023 0 Comments Illuminate definition astronomy![]() ![]() It also provides ambient lighting as a secondary function.Īrc lamp – A lamp that creates an electric arc between two electrodes. Although no one has achieved absolute zero, scientists have reached within a few millionths of Kelvin above absolute zero.Īccent lighting – Lighting used to emphasize or draw attention to a special object or building.Īdaptive controls – Devices such as motion sensors, timers, and dimmers used with outdoor lighting equipment to vary the intensity or duration of operation of lighting.Īmbient light – The general overall level of lighting in an area.Īmerican Lighting Association (ALA) – A trade association covering the US, Canada, and the Caribbean, concerned about residential lighting, with members including manufacturers, event organizers, and designers.Īngstrom – A unit of length, equal to one hundred-millionth of a centimeter, 10 -10 meter or 0.1 nanometer, used mainly to express wavelengths often used in astronomy.Īrchitectural lighting – Lighting that is primarily decorative in nature and designed into a building and its construction. It is zero on the Kelvin scale, equal to -273.15☌ or -459.67☏. Some of these terms are fairly technical, so we have tried our best to make them understandable for the non-technical person.Ībsolute zero – The lowest temperature that is theoretically possible, completely absent of all heat, and the point at which the motion of atoms completely stops. These definitions pertain only in those contexts and may have other or additional meanings in other fields.
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