By Kevin B. Marvel Ph.D.
See the skies in a complete new mild. Take a travel of the universe, from our neighborhood sunlight procedure to the some distance reaches of inner most area. Astronomy Made Simple bargains a whole creation to this technological know-how, from its beginning in precedent days to the different sorts of super-powerful telescopes scientists use this day. it is also designated directions on how you can map the celebrities and comprehend the coordinate process, in addition to enjoyable sidebars, rules for initiatives for extra studying, and assets for the coed or the novice astronomer.
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Extra info for Astronomy Made Simple
We just got lucky. 7. This similarity in size leads to two kinds of eclipses, total eclipses and annular eclipses (Fig. 8). Total eclipses occur when the face of the Sun is completely blocked by the Moon as seen from Earth, and annular eclipses occur when the Moon is closer to Earth in its orbit, appearing slightly smaller and leaving an annulus, or ring, of the Sun still visible. When the surface of the Sun is only partially obscured by the Moon, it is called a partial eclipse. These are fairly common.
Because his work was not translated into Latin, the primary language of early science, until the thirteenth century—after these facts had been explained and accepted by European astronomers—he did not have a significant impact on western astronomy (although some of his mathematical methods were eagerly adopted). Brahmagupta (ca. 598–ca. ), another Indian astronomer, estimated the circumference of Earth. Using his own approximation for the value of pi (the square root of 10; pi is usually represented as π), he determined that the Earth was about 36,000 km in circumference—not too far off the modern value of 40,075 km.
As Greek civilization faded, Arabic civilization began to emerge as dominant in the Middle East and North Africa. , Baghdad became a center of culture and learning with the caliph, or king of the time, establishing what was essentially a university. Many of the Greek texts that survived the period of instability were translated into Arabic. Refinements to the calculations and tables in the books were made, and new results and studies began to be published by Arabic scientists. ), later known to Europeans as Alhazen, produced a seven-volume work on optics, Kitab al-Manazir, which was translated into Latin in 1270 as Opticae Thesaurus Alhazeni.
Astronomy Made Simple by Kevin B. Marvel Ph.D.