Definition of apparent diameter. Meaning of apparent diameter. Synonyms of apparent diameter

Here you will find one or more explanations in English for the word apparent diameter. Also in the bottom left of the page several parts of wikipedia pages related to the word apparent diameter and, of course, apparent diameter synonyms and on the right images related to the word apparent diameter.

Definition of apparent diameter

apparent diameter
4. Greatness; grandeur. ``With plain, heroic magnitude of mind.' --Milton. 5. Greatness, in reference to influence or effect; importance; as, an affair of magnitude. The magnitude of his designs. --Bp. Horsley. Apparent magnitude (Opt.), the angular breadth of an object viewed as measured by the angle which it subtends at the eye of the observer; -- called also apparent diameter. Magnitude of a star (Astron.), the rank of a star with respect to brightness. About twenty very bright stars are said to be of first magnitude, the stars of the sixth magnitude being just visible to the naked eye. Telescopic stars are classified down to the twelfth magnitude or lower. The scale of the magnitudes is quite arbitrary, but by means of photometers, the classification has been made to tenths of a magnitude.

Meaning of apparent diameter from wikipedia

- The angular diameter, angular size, apparent diameter, or apparent size is an angular distance describing how large a sphere or circle appears from a given...
- Apparent magnitude (m) is a measure of the brightness of a star, astronomical object or other celestial objects like artificial satellites. Its value depends...
- an atmospheric optical phenomenon that consists of a halo with an apparent diameter of approximately 22° around the Sun or Moon. Around the Sun, it may...
- magnitude stars measured 2 arc minutes (2′) in apparent diameter (1⁄30 of a degree, or 1⁄15 the diameter of the full moon), with second through sixth magnitude...
- measured the apparent sizes of the Sun and the Moon and concluded that the apparent diameter of the Sun was equal to the apparent diameter of the Moon...
- days before apogee (on March 17, 2025, at 12:35 UTC), the Moon's apparent diameter will be smaller. This lunar eclipse will be the first of an almost...
- appearance (whether total or annular) depend on the exact apparent diameter of the Moon. The apparent diameter of the full moon varies with the full moon cycle...
- hours before perigee (on September 18, 2024, at 9:20 UTC), the Moon's apparent diameter was larger. This eclipse also occurred during a supermoon. This eclipse...
- trigonometry or a table of chords, Archimedes determines the Sun's apparent diameter by first describing the procedure and instrument used to make observations...
- for a viewer on Earth. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day...