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Originally shared by Larry PhillipsTidal Forces
This illustrates how the Moon causes tides on the Earth.
The Moon’s gravity pulls on each piece of the Earth, but the attractive force is a little stronger on the side facing the Moon, and a little weaker on the side opposite the Moon. The average force is the force at the center of the Earth.
The arrows at each point show how much the attractive force differs from the average as the Moon circles the Earth. These are the tidal forces, and the result is a bulge in the ocean on opposite sides of the Earth. Earth rotates under these bulges, resulting in about two high tides each 24 hours.
Source: WolframAlpha demonstrations.
#gravity #astrophysics
This illustrates how the Moon causes tides on the Earth.
The Moon’s gravity pulls on each piece of the Earth, but the attractive force is a little stronger on the side facing the Moon, and a little weaker on the side opposite the Moon. The average force is the force at the center of the Earth.
The arrows at each point show how much the attractive force differs from the average as the Moon circles the Earth. These are the tidal forces, and the result is a bulge in the ocean on opposite sides of the Earth. Earth rotates under these bulges, resulting in about two high tides each 24 hours.
Source: WolframAlpha demonstrations.
#gravity #astrophysics
Tidal Forces This illustrates how the Moon causes tides on the Earth. The Moon’s gravity pulls on each piece of the Earth, but the attractive force is a little stronger on the side facing the Moon, and a little weaker on the side opposite the Moon. The average force is the force at the center of the Earth. The arrows at each point show how much the attractive force differs from the average as the Moon circles the Earth. These are the tidal forces, and the result is a bulge in the ocean on opposite sides of the Earth. Earth rotates under these bulges, resulting in about two high tides each 24 hours. Source: WolframAlpha demonstrations. #gravity #astrophysics
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+1'd by: Håkan Holgersson, Paul Campbell, Paul Evans, Mikola Lysenko, leonhard carl, Torolf Sauermann, 林則余, Jasmine Anderson, Chris Depper, Scott Vorthmann, Gavin Baker, Jaysen Naidoo, Karen Peck, stefan jeffers, Paul Gray, Carlos Portela, Zohreh Jafari
Reshared by: Gavin Baker, Carlos Portela
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