- mean equatorial day
- 平赤道日
Atmospheric Sciences (English-Chinese) dictionary. 2014.
Atmospheric Sciences (English-Chinese) dictionary. 2014.
Equatorial climate — An equatorial climate is a type of tropical climate in which there is no dry season – all months have mean precipitation values of at least 60 mm (2.4 inches). It is usually found at latitudes within five degrees North and South of the equator –… … Wikipedia
Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth … Wikipedia
Earth's rotation — is the rotation of the solid Earth around its own axis. The Earth rotates towards the east, which can be observed by orientation with a magnetic compass at sunrise. As viewed from the star Polaris, the Earth turns counter clockwise. Rotation… … Wikipedia
Equinox — This article is about the astronomical event when the sun is at zenith over the Equator. For other uses, see Equinox (disambiguation). For the same event happening on other planets and setting up a celestial coordinate system, see Equinox… … Wikipedia
CALENDAR — (Heb. לוּחַ, lu aḥ). The present Jewish calendar is lunisolar, the months being reckoned according to the moon and the years according to the sun. A month is the period of time between one conjunction of the moon with the sun and the next. The… … Encyclopedia of Judaism
Ionosphere — The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner … Wikipedia
Planetary data for Earth — ▪ Table Planetary data for Earth mean distance from Sun 149,600,000 km (1.0 AU) eccentricity of orbit 0.0167 inclination of orbit to ecliptic 0.000° Earth year (sidereal period of revolution) 365.256 days mean orbital velocity 29.79 km/sec… … Universalium
Planetary data for Venus — ▪ Table Planetary data for Venus mean distance from Sun 108,200,000 km (0.72 AU) eccentricity of orbit 0.007 inclination of orbit to ecliptic 3.4° Venusian year (sidereal period of revolution) 224.7 Earth days maximum visual magnitude –4.6 mean… … Universalium
Planetary data for Mars — ▪ Table Planetary data for Mars mean distance from Sun 227,941,040 km (1.5 AU) eccentricity of orbit 0.093 399 inclination of orbit to ecliptic 1.850 20° Martian year (sidereal period of revolution) 686.980 Earth days visual magnitude at mean… … Universalium
Planetary data for Mercury — ▪ Table Planetary data for Mercury mean distance from Sun 57,910,000 km (0.4 AU) eccentricity of orbit 0.2056 inclination of orbit to ecliptic 7.004° Mercurian year (sidereal period of revolution) 87.9694 Earth days maximum visual magnitude 1.9… … Universalium
Tidal acceleration — is an effect of the tidal forces between an orbiting natural satellite ( i.e. a moon), and the planet (called the primary) that it orbits. It causes a gradual recession of a satellite in a prograde orbit away from the primary, and a corresponding … Wikipedia