атмосфералық дисперсия түзеткіші

атмосфералық дисперсия түзеткіші

An optical device usually comprising two thin prisms which can rotate to compensate for the elongation of a star image caused by the wavelength dependence of the refractive index of air.

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Industry/Domain: Astronomy
Category: General astronomy
Company: Caltech
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Industry/Domain: Holiday Category: Religious holidays

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Ash Wednesday is observed by Christians. Marking the first day of Lent, which lasts until Easter (a period of 46 days), it is the day of repentance. ...