I will post the answer later.
2007-09-12
14:17:42
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10 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Astronomy & Space
Good Lord-- John M must be a GENIUS!!! He's the ONLY ONE in the two places I asked this who got it right!!! YES-- the sun drops through the horizon at a steeper angle in the summer than in the winter. Naturally, at a shallow angle, the sun will "skim" the horizon for a longer time. Never thought this one would be so hard! Can't believe so many people thought it had to do with amount of daylight hours.
2007-09-12
15:06:22 ·
update #1
******EDIT**************
Well, this is a disturbing turn of events-- and a let down for me from a previously reliable source. But after some investigation-- Keith P is correct. Big round of applause ladies and gentleman!
2007-09-13
01:30:46 ·
update #2
Well sorry, but you and John M. are both wrong.
It's true that the angle of the Sun is the critical factor, but the shortest twilight occurs at both equinoxes, and the longest twilight occurs at both solstices, for observers at temperate latitudes. This is because when the Sun is at high (and low) declinations, the apparent angle of interception with the horizon is greater -- meaning that it takes longer for the Sun's *altitude* to decrease to -18° (or -12°, or -6°, whichever criterion you use).
If you imagine a star at a declination so high that it just barely sets (or such a low declination that it barely rises), you'll understand why this is true.
And in any case, it should be obvious that the angle of interception with the horizon for a setting body is exactly the same when at -x° declination as it is when at +x° declination -- just imagine the earth is transparent and flip the celestial sphere upside down, and you'll quickly see why. So summer and winter must be the same. But spring and fall is where the difference lies.
2007-09-12 17:14:14
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answer #1
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answered by Keith P 7
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Yes, it's true. The closer you get to the sun (while on earth), the shorter it takes for it to get dark. The further away from the sun (closer to the earth poles), the light gets more "spread" or dispersed over a larger surface, causing a longer twilight.
2007-09-12 21:48:46
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answer #2
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answered by Batfish 4
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I would say true. There are less hours of sunlight during the winter, but due to the angle of the sun I would assume that it would take longer to get dark.
2007-09-12 21:26:05
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answer #3
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answered by stoneytreehugger 5
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That depends on where you live demographically.
In NW Indiana,(during the months of June,July,and August),it's not completely dark outside until 8:45pm
2007-09-12 21:27:42
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answer #4
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answered by Squeakers 6
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False.
2007-09-12 21:27:05
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answer #5
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answered by Anonymous
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In the Northern Hemisphere it's "false."
In the Southern Hemisphere it's "true."
2007-09-12 21:57:03
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answer #6
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answered by Chug-a-Lug 7
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false it gets darker in the winter because you seee if the moon.... oh never mind the answer is false
2007-09-12 21:24:29
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answer #7
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answered by Jayden L 2
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false, it gets dark faster in the winter...duh.
2007-09-12 21:22:54
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answer #8
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answered by ny_girly18 2
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false with out question
2007-09-12 21:25:12
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answer #9
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answered by zer 2
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You're planning on dying a virgin, aren't you?
2007-09-16 19:42:08
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answer #10
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answered by cowboydanimal 4
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