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This is a list of sources of light, the visible part of the electromagnetic spectrum.Light sources produce photons from another energy source, such as heat, chemical reactions, or conversion of mass or a different frequency of electromagnetic energy, and include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that ...
Life That Glows. Life That Glows (also known as David Attenborough’s Light on Earth) is a 2016 British nature documentary programme made for BBC Television, first shown in the UK on BBC Two on 9 May 2016. The programme is presented and narrated by Sir David Attenborough . Life That Glows depicts the biology and ecology of bioluminescent ...
The series, the subject of Brett Forrest's book Long Bomb: How the XFL Became TV's Biggest Fiasco, ranked No. 3 on the 2002 TV Guide list of worst TV series of all time, #2 on ESPN's list of biggest sports flops, #21 on TV Guide's 2010 list of the biggest television blunders of all time, and #10 on Entertainment Weekly's list of the biggest ...
An unusually strong solar storm hitting Earth produced stunning displays of color in the skies across the Northern Hemisphere early Saturday, with no immediate reports of disruptions to power and ...
In a descriptive sense, the term light pollution refers to the effects of any poorly implemented lighting sources, during the day or night. Light pollution can be understood not only as a phenomenon resulting from a specific source or kind of pollution, but also as a contributor to the wider, collective impact of various sources of pollution.
EarthTV Network GmbH is a German satellite Television Network, which airs live broadcasts from its camera network around the world. [1] [2] Cameras are located in well-known cities as well as lesser-known locations. EarthTV cameras usually feature beaches, mountains, seaside resorts, or skylines of major cities.
When any wire (or other conducting object such as an antenna) conducts alternating current, electromagnetic radiation is propagated at the same frequency as the current. As a wave, light is characterized by a velocity (the speed of light), wavelength, and frequency. As particles, light is a stream of photons.
Outgoing longwave radiation ( OLR) is the longwave radiation emitted to space from the top of Earth's atmosphere. [1] : 2241 It may also be referred to as emitted terrestrial radiation. Outgoing longwave radiation plays an important role in planetary cooling. Longwave radiation generally spans wavelengths ranging from 3–100 microns (μm).