Starlight
Starlight is the visible radiation, especially the light, that is emitted by stars in the universe. It is a critical aspect of astronomy, and its study has led to many key discoveries about the universe.
Composition[edit | edit source]
Starlight is composed of photons in all frequencies of the electromagnetic spectrum. This includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. The distribution of these frequencies in starlight is determined by the temperature and composition of the star.
Observation[edit | edit source]
The observation of starlight, spectroscopy, has been a crucial tool in astronomy. It allows for the determination of a star's composition, temperature, velocity, and distance. The Doppler effect observed in the starlight's spectrum allows for the measurement of a star's velocity relative to the observer.
Effects of the atmosphere[edit | edit source]
The Earth's atmosphere refracts starlight, causing stars to appear to twinkle in a phenomenon known as stellar scintillation. This effect is less pronounced the higher in the sky the star is and can be eliminated by observing from outer space.
Starlight in culture[edit | edit source]
Starlight has had a significant impact on human culture, inspiring countless works of art, literature, and music. It has also been used for practical purposes, such as navigation by the stars.
See also[edit | edit source]
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Contributors: Prab R. Tumpati, MD
