Yes, NASA scientists have been able to demonstrate that the Three Gorges Dam in China has been shown to slightly slow down Earth's rotation. The dam's massive reservoir, holding 40 billion cubic meters of water*, shifts the distribution of Earth's mass and alters its moment of inertia. This change in moment of inertia causes the planet's rotation to slow down by a minuscule amount, specifically 0.06 microseconds per day. Evidently, it really is in the numbers after all...
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* 40 billion cubic meters (40 x 10^9 m³) of water is a very large volume,
equivalent to 40,000,000,000,000 liters (40 x 10^12 L).
To put it into perspective, one cubic meter holds 1,000 liters.
.06 microseconds a YEAR, or a DAY? HUGE difference..... Big deal over the next 10 million years or so. Maybe as much as a whole second.
ReplyDeleteIt says per day which just means more daylight to play outside.
DeleteIf we could get everyone on earth to face west and run at the same time, I'm sure we could speed up the rotation.
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It is all such a silly idea. The weight of the planet has not changed. We don't lose matter. Just because matter takes a different form does not mean we have changed weight. We still would have had all the water, and all the materiel weight, even if the dam had not been built. Just because it may be a little re-distributed has no bearing on anything. So silly.
ReplyDeleteBut hot air is lighter and since there's global warming the planet itself is getting like a hot air balloon cancelling out all other forces. Soon we will float off into a distant galaxy and collide with another planet just like earth. IF the sun doesn't swallow us first.
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