The Universal Preceptor: Being a General Grammar of Arts, Sciences, and Useful Knowledge ... |
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Страница 84
... from the point over our own heads , the inhabitants of no part of the earth can see both poles , except those who live at the equator , from which both poles are distant ninety degrees . The poles of the heavens may therefore 84 ...
... from the point over our own heads , the inhabitants of no part of the earth can see both poles , except those who live at the equator , from which both poles are distant ninety degrees . The poles of the heavens may therefore 84 ...
Страница 85
The poles of the heavens may therefore be seen at the equator , exactly in the horizon , in the north and south ; but if you travel or sail one degree to the north of the equator , so as to be within 89 degrees of the north pole ...
The poles of the heavens may therefore be seen at the equator , exactly in the horizon , in the north and south ; but if you travel or sail one degree to the north of the equator , so as to be within 89 degrees of the north pole ...
Страница 86
ern of the three stars in the Belt of Orion , is exactly over the equator , so that from that star to the north pole star is exactly 90 degrees . The Pleiades are in the Zodiac , on the south side ; and so is the red star Aldeberan ...
ern of the three stars in the Belt of Orion , is exactly over the equator , so that from that star to the north pole star is exactly 90 degrees . The Pleiades are in the Zodiac , on the south side ; and so is the red star Aldeberan ...
Страница 94
Hence , also , it is 180 degrees from the north to the south pole ; and 90 degrees from each pole is the middle of the earth , called the Equator . 287. Hence , as half the heavens are always visible , 180 degrees are visible ; and from ...
Hence , also , it is 180 degrees from the north to the south pole ; and 90 degrees from each pole is the middle of the earth , called the Equator . 287. Hence , as half the heavens are always visible , 180 degrees are visible ; and from ...
Страница 95
It must be evident , that during all the time the sun is vertical north of the equator he will shine as many degrees beyond the north pole as he is vertical north of the equator ; and that , during all the time he is vertical to the ...
It must be evident , that during all the time the sun is vertical north of the equator he will shine as many degrees beyond the north pole as he is vertical north of the equator ; and that , during all the time he is vertical to the ...
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