Answers (2) |
sumesh kumar
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Apr 7, 2006,12:51 pm
| The moon is visible since it reflects the sun light. The moon can reflect the sunlight only when the moon is nearly above our head. In the rise/set, the moon cannot reflect the sunlight because that is not in a reflecting position. Thats why we cannot see moonrise and moonset. |
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Varghese Mathew
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Apr 9, 2006,12:06 pm
I'd like to differ with the above answer.. If you are observent enough, then moonrise and moonset will be just as visible provided its not a cloudy day..
<br>The key thing here is, the luminous intensity of the sun is some 100,000 times more than that of the moon (not exactly sure of the statistics).. The moon rise happens soemtime a little before sunset.. at that time, the sun's intensity is so high it effaces the moon..
<br>there's a concept called brightness adaptation level relating to our eyesight.. what it essentially means is that even though we have a wide range of perceptible brightness intensity levels, at any given time when the "background" birghtness is of a given level, we see only brightness levels in a certain range around the "background" brightness..
<br>Thus the intensity of the sun even at the time of sunset is sufficient to efface out the moonrise from view..
<br>And similarly moonset happens sometime after sunrise so that the sunrise effaces out the moonset.. |
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