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A sunbeam, in meteorological optics, is a beam of sunlight that appears to radiate from the position of the Sun. Shining through openings in clouds or between other objects such as mountains and buildings, these beams of particle-scattered sunlight are essentially parallel shafts separated by darker shadowed volumes.
Crepuscular rays are noticeable when the contrast between light and dark is most obvious. Crepuscular comes from the Latin word crepusculum, meaning "twilight". [2] Crepuscular rays usually appear orange because the path through the atmosphere at dawn and dusk passes through up to 40 times as much air as rays from a high Sun at noon.
Therefore, the sunbeam hitting the ground at a 30° angle spreads the same amount of light over twice as much area (if we imagine the Sun shining from the south at noon, the north–south width doubles; the east–west width does not). Consequently, the amount of light falling on each square mile is only half as much.
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Extreme UV and X-rays are produced (left of wavelength range) but comprise very small amounts of the Sun's total output power (area under the curve). Although the solar corona is a source of extreme ultraviolet and X-ray radiation, these rays make up only a very small amount of the power output of the Sun (see spectrum at right).
Archimedes' heat ray, a purported device from antiquity which weaponized the sun's rays; 20 Fenchurch Street, a skyscraper in London whose concave reflecting face generated extremely high temperatures - hot enough to melt plastic - by reflecting the sun's rays; Concentrated solar power; Solar furnace; Space-based solar power
Sunlight forms a light beam (a sunbeam) when filtered through media such as clouds, foliage, or windows. To artificially produce a light beam, a lamp and a parabolic reflector is used in many lighting devices such as spotlights, car headlights, PAR Cans, and LED housings. Light from certain types of laser has the smallest possible beam divergence.
Sunbeam Motor Car Company Limited was a British automobile manufacturer in operation between 1905 and 1934. Its works were at Moorfields in Blakenhall, a suburb of Wolverhampton in Staffordshire, now West Midlands. The Sunbeam name had originally been registered by John Marston in 1888 for his bicycle manufacturing business. Sunbeam motor car ...