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us the stars we see them & they are light years away the sun is so large compared to earth nwe should be able to see some light if we look right or left can i get afew answers on this
i know the earth cast a shadow but that doesnt account for why we cant see the light going past us i have done a test with a pin head & a torch its clear to me the pin head didnt stop the light pas ing the head of the pin the torch wasnt on ascale as the sun it was much smaller tr it can someone come up with the right answer please

2007-06-03 03:14:26 · 5 answers · asked by Anonymous in Science & Mathematics Physics

5 answers

Well, we do see some of the light, as in after sundown, the atmosphere scatters some of the light preventing sudden darkness. But the atmosphere is a couple dozen miles thick, beyound it is vacuum. There is no matter to scatter the light.

In the test you described, you are not seeing the light go past, what you are seeing is some light not initially pointed toward your eyes that is scattered toward your eyes by air.

2007-06-03 03:27:33 · answer #1 · answered by Gary H 6 · 2 0

The Sun may be bigger than the Earth, but it is also 93 million (or so)
away.

Your flashlight is much much closer.

Unfortunately, its not clear from your question what your view point is.

Do you understand how the Moon can (barely) block out the light of
the Sun? Clearly the Moon is smaller than the Sun, but it is closer.
It is just enough closer that it appears to be approximately the same
size. This is because it takes up the same ANGLE in the sky as the
Sun does.

Ultimately, the question comes down to three points in space
(ignoring gravity, thank you Einstein): The source, the potential
block and the view point. Your view point is less than 6 inches wide
(the distance between your eyes).

You don't see something unless the light can travel from the source to
your view point. The further something away is, the less of an angle
it poses to your view, so the smaller an object that is required to block
it ... So yes, you can block even the Sun.

(mandatory disclaimer: None of this takes into the effects of
atmosphere, gravity or motion over time)

2007-06-03 10:24:46 · answer #2 · answered by Elana 7 · 0 0

You can't see light if it's not directed at your eyes. The difference between your torch and pin head experiment and the earth and the sun is that the space above our atmosphere is mostly empty space and there's nothing to reflect, refract, or otherwise redirect the sun light toward your eyes. The torch pin head experiment takes place within our atmosphere where light is being reflected .

2007-06-03 10:26:00 · answer #3 · answered by jsardi56 7 · 1 0

the thing is you can't see the light itself. u see only light bouncing of an object, and that enables u to see the object. so actualy u see the light passing by seeing other objects, like the Moon (which is a dark body) for instance. the ray itslef is not visable. so actualy u the light from the Sun is passing the earth in all directions, u can't see it until it bounces from an object and we see the object itself, not the light.

2007-06-03 10:26:40 · answer #4 · answered by tak_np 1 · 2 0

WELL THE EARTH IS A SPHERE. ITS NOT A SQUARE AND SINCE WE ARE ABOUT 93 MILLION MILES AWAY FROM THE SUN ITS BRIGHTINESS DECREASES.

2007-06-03 10:23:33 · answer #5 · answered by Saad Baig 3 · 1 0

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