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Hace 1 día · Diffraction grating. In optics, a diffraction grating is an optical grating with a periodic structure that diffracts light, or another type of electromagnetic radiation, into several beams traveling in different directions (i.e., different diffraction angles). The emerging coloration is a form of structural coloration.
Hace 1 día · To help compare different orders of magnitude this section lists lengths between 10 −11 and 10 −10 m (10 pm and 100 pm). 25 pm – approximate radius of a helium atom, the smallest neutral atom. 30.8568 pm – 1 rontoparsec. 50 pm – radius of a hydrogen atom. 50 pm – bohr radius: approximate radius of a hydrogen atom.
Hace 1 día · An electronic cigarette. A cigarette is a narrow cylinder containing a combustible material, typically tobacco, that is rolled into thin paper for smoking. The cigarette is ignited at one end, causing it to smolder; the resulting smoke is orally inhaled via the opposite end. Cigarette smoking is the most common method of tobacco consumption.
Hace 8 horas · Rajgad Fort 's Citadel, an eroded hill from the Deccan Traps, which are another hypothesized cause of the K–Pg extinction event. The Cretaceous–Paleogene ( K–Pg) extinction event, [a] also known as the Cretaceous–Tertiary (K–T) extinction, [b] was the mass extinction of three-quarters of the plant and animal species on Earth [2] [3 ...
Hace 8 horas · The term sushi literally means "sour-tasting", as the overall dish has a sour and umami or savory taste. The term comes from an antiquated し shi terminal-form conjugation, no longer used in other contexts, of the adjectival verb sui (酸い, "to be sour"), [13] resulting in the term sushi (酸し). [14]
