what is equinoixs?

Answer 1

do you mean equinox??? if so An equinox in astronomy is the event when the Sun can be observed to be directly above the Earth's equator, occurring around March 20 and September 22 each year. easier terms the equinoxes are the two days each year when the center of the Sun spends an equal amount of time above and below the horizon at every location on Earth.

Answer 2

An equinox in astronomy is the event when the Sun can be observed to be directly above the Earth's equator, occurring around March 20 and September 22 each year. On these dates, night and day are nearly of the same length and the Sun crosses the celestial equator (i.e., declination 0). More technically, the equinox happens when the Sun is at one of two opposite points on the celestial sphere where the celestial equator and ecliptic intersect. In a wider sense, the equinoxes are the two days each year when the center of the Sun spends an equal amount of time above and below the horizon at every location on Earth. The word equinox derives from the Latin words aequus (equal) and nox (night).

In theory, the day is longer than the night. Commonly the day is defined as the period that sunlight reaches the ground in the absence of local obstacles. From Earth, the Sun appears as a disc and not a single point of light; so, when the center of the Sun is below the horizon, the upper edge is visible. Furthermore, the atmosphere refracts light; so, even when the upper limb of the Sun is below the horizon, its rays reach over the horizon to the ground. In sunrise/sunset tables, the assumed semi-diameter (apparent radius) of the sun is 16 minutes of arc and the assumed refraction is 34 minutes of arc. Their combination means that when the upper limb of Sun is on the visible horizon its center is 50 minutes of arc below the geometric horizon, which is the intersection with the celestial sphere of a horizontal plane through the eye of the observer. These effects together make the day about 14 minutes longer than the night at the equator, and longer still at sites toward the poles. The real equality of day and night only happens at places far enough from the equator to have at least a seasonal difference in daylength of 7 minutes and occurs a few days towards the winter side of each equinox.

Answer 3

I haven't the slightest clue what an equinoixs is, but if you mean equinox, read on.

Equinox is an astronomical term for the event (much like an eclipse) when the sun is directly aboce the equator, that is, not shining at an angle towards earth. During this event, days are equal in length to night. Feel free to research some more.

Answer 4

An equinox, the first day of spring or fall is when the sun is directly overhead the equator. Now a solstice, the first day of summer or winter, is when the sun is either directly over the Tropic of Cancer or the Tropic of Capricorn.

Answer 5

Equinox is the day on which the sun's rays fall vertically over the equator.This happens on two days in a year. They are 22nd March (Vernal Equinox) and 23rd September(Autumnal Equinox).The day and the night are equal in length on these two days.

Answer 6

Equinox refers to the two halfway points (in Fall and Spring) between the longest day of the year (roughly June 21st) and the shortest day (around December 21st).

Answer 7

equinox occurs on march 21st, the first day of spring or september 21st, the first day of fall it is when the sun is right above the equator and the days have 12 hours of sun and 12 hours of darkness.

Hope it helps................