Astronomy and astrophysics Spherical astronomy and astrometry Concept
Atmospheric refraction
Summary
Atmospheric refraction is the bending of light as it passes through the Earth's atmosphere, whose density and refractive index change with height. It makes celestial objects appear higher above the horizon than they are. The effect is zero at the zenith and largest at the horizon, where it is about half a degree.
Further reading
About this page
| Tag | 13D4PQ5N0T |
|---|---|
| URI | m2://13D4PQ5N0T |
| Kind | concept |
| Writing | W0 stub |
| MSC | 85A04, 86A10 |
| Same as | |
| Changed | 3 November 2026 |
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