Pretty cool that Linus Torvalds invented a completely distributed version control system and 20 years later we all use it to store our code in a single place.
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Everything is fully and completely explained, in terms which mean nothing.
(They ain't perfect, of course.)
"In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle. The declination angle is measured north (positive) or south (negative) of the celestial equator, along the hour circle passing through the point in question."
Anyone who doesn't know what declination is, know from reading the introductory paragraph of this scientific Wikipedia article?
Anyone? no? :-)
I rest my case, m'lud.
On a celestial sphere (planet, star, etc) the declination angle (being 0 is at the equator, being 90 degrees is the north pole of the sphere, being -90 degrees, is at the south pole).
You also need another angle known as the "hour angle" to locate a point on the sphere. It doesn't explain what that is, but as can be seen on Wikipedia, you can easily click on that word to go to the entire page that explains what it is.
What don't you understand?
Once again, not so difficult to figure out even if you have no experience in the specific technical field of a Wikipedia article. So I have no idea what /u/casenmgreen's problem is.