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# how does the angle at which the suns rays strike the earth's surface affect the amount of energy being receive

how does the angle at which the suns rays strike the earth’s surface affect the amount of energy being receive

1. at a high angle, as with high noon, the sun’s rays need only travel about 23 miles of atmosphere.
At sunset, the angle of the sun will require the rays to traverse about 10 times that (guestimating here) thickness………
At a shallow angle of morning or evening, more energy is absorbed into the air and/or reflected back into space than when the sun is directly overhead……..
HOWEVER, even though the sun’s heat is most intense around noon, maximum heating (the approximate time where the atmosphere and ground has absorbed the most heat energy) occurs around 3:30PM or so………

2. Consider a laser pointer:
Shine the spot directly onto the floor, then try holding the pointer at an angle so the spot gets smeared out. The same amount of energy per sec is emitted by the laser pointer in both cases, but when the spot is smeared out the same energy is spread over a larger area, so it wouldn;’ get as heated
This effect for sunlight explains both the seasons and the change in temperature with latitude

3. On an equinoccio day, sun rays strike ecuator at 90Ã‚Âº.
either pole at 0Ã‚Âº, tropic lines at 23Ã‚Âº27Ã‚Â´ see the difference between ecuator climate and poleÃ‚Â´s. energy recived in ecuator THAT PARTICULAR DAY is = 1660 watts
Same day in poles, is 0 watts

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