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20 ore fa · Rogue wave. A merchant ship labouring in heavy seas as a large wave looms ahead, Bay of Biscay, c. 1940. Rogue waves (also known as freak waves, monster waves, episodic waves, killer waves, extreme waves, and abnormal waves) are unusually large and unpredictable surface waves that can be extremely dangerous to ships and isolated structures such ...
20 ore fa · Ultraviolet ( UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs, Cherenkov radiation, and ...
