All Questions
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Does earth revolution speed slowing down because of small drag from space is not empty?
I read that universe is not empty, in least dense parts has 1000 atoms per cubic meter, does that slow down earth speed?
Why these atoms are there, why they are not attracted by surrounding gravity ...
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1
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1
answer
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Earth's unimpeded rotation for billions of years [duplicate]
My nephew (7th grade) has stumped me with this question.
If I spin a top, it eventually stops, because of friction, air
resistance etc. How come the Earth has been spinning non-stop for 4.5
Billion ...
- 113
1
vote
1
answer
84
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Variance of earth's rotational speed due to tidal effects
I recently watched a video that explained how the length of the day was impacted by where the Earth was at in its orbit around the Sun. Consider a "day" for a point on Earth the period from when the ...
- 111
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Is gravitation on earth less in nighttime than in daytime?
I have been thinking on the effect of the centrifugal/centripetal forces from the orbital movement of the earth around the sun, which might perhaps affect the gravity.
In nighttime we are on the ...
- 109
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2
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Is there any danger of gravity being used up? [duplicate]
Posit a way to harness gravity for energy and widespread use of this new technology world-wide. Could it be damaging to Earth, over a few hundred years, slowing or speeding up rotation or the orbit ...
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7
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2
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Can we get energy from the Earth's rotation?
Is there any way to harvest large amounts of energy from the Earth's rotation?
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3
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How quickly was the Earth rotating 250 million years ago?
The Earth is slowing at a rate of $4.7\times10^{-4}$ miles per second every 100 years due to tidal forces of the moon.
See:
http://en.wikipedia.org/wiki/Earth%27s_rotation
http://imagine.gsfc.nasa....
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