By measuring the period and apparent brightness of a Cepheid, astronomers could easily calculate its distance. Miss Leavitt's Stars: The Untold Story of the Woman Who Discovered How to Measure the Universe The apparent brightness of Uranus depends on its distances from the Sun and Earth, so any...
The definition ofapparent brightnessis the amount of light from a star (or from an object reflecting a star's light) that reaches Earth. Apparent brightness is not anintrinsic propertyof a star because it depends on the distance of a star or object in space from Earth. This is based on ...
2.The apparent change in position of a celestial body caused by the bending of light as it enters the Earth's atmosphere. UsageThe wordsrefractionandreflectiondescribe two different ways that a light wave, sound wave, or other wave can move when it encounters a boundary between two media. Th...
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann Want to thank TFD for its existence?Tell a friend about us, add a link to this page, or visitthe webmaster's page for free fun content. ...
Define Apparent separation. Apparent separation synonyms, Apparent separation pronunciation, Apparent separation translation, English dictionary definition of Apparent separation. Noun 1. angular distance - the angular separation between two objects as p
[10.sup.9] Spectral type G2 V Absolute magnitude +4.83Apparent visual magnitude-26.74 Distance from Earth (km) 1.47 -1.52 x [10.sup.8] Core pressure (atmosphere) 2.452 x [10.sup.11] Core temperature ([degrees]C) 1.571 x [10.sup.7] Rotation period at equator (days) 26.8 Rotation ...