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Remember that a solar day was slightly longer than a sidereal day because of the Sun's apparent motion around the Earth (which is actually because of the Earth's motion around the Sun). The Sun's eastward drift in opposition to the stars also implies that the Moon's synodic interval is longer than its sidereal interval. A…

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Solved Rayleigh

Radiative excitation and deexcitation in photoinized plasmas can produce detectable line emission. The Rayleigh-Jeans legislation of radiation is in good settlement with experiment just for small v—that is, for lengthy wavelengths. According to the regulation, as v will increase, the radiant power ought to enhance without sure. In the far ultraviolet and in nonetheless shorter-wavelength…

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