physics bods, I suppose....
17 September 2006, 07:38 PM
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physics bods, I suppose....
The tides as we know are caused by the magnetic pull of the moon as the earth rotates past it, the moon pulls the oceans to form tides...yes?
If this pull is so strong, why does it not affect compasses, watches etc....?
I don't know the answer, just something that I thought the other day
If this pull is so strong, why does it not affect compasses, watches etc....?
I don't know the answer, just something that I thought the other day
17 September 2006, 07:46 PM
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It's not magnetic pull, you feejit, it's gravitational. Do you think the sea's made of iron filings or summat? 
The moon doesn't have a magnetic field because, unlike the Earth, it doesn't have a part solid, part liquid iron-nickel core. It is currents within the Earth's core that creates the dynamo effect and the resulting magnetic field.
The moon doesn't have a magnetic field because, unlike the Earth, it doesn't have a part solid, part liquid iron-nickel core. It is currents within the Earth's core that creates the dynamo effect and the resulting magnetic field.
17 September 2006, 07:57 PM
#7
Originally Posted by Chip Sengravy
The tides as we know are caused by the magnetic pull of the moon as the earth rotates past it,
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17 September 2006, 08:46 PM
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Originally Posted by jonc
Its the moon that actually rotates around the earth, not the other way around!
18 September 2006, 12:13 AM
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Tides are caused by the moon and the sun stretching the earth and the seas, because of the difference in gravitational pull at the near and far sides of the earth with respect to the sun and moon. As they move around the earth, the bulges are observed as the high tides.
The reason you don't see much of a tide in the Med is that it's very nearly landlocked and the bulges only have a local effect. It's the same for large lakes.
The reason you don't see much of a tide in the Med is that it's very nearly landlocked and the bulges only have a local effect. It's the same for large lakes.
18 September 2006, 12:14 AM
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Originally Posted by ricardo
They both orbit the Sun, while revolving around each other. Note also the difference betwen rotating and revolving.
. The Earth and the Moon revolve around a common centre of gravity. Because of the massive disparity in size between the Earth and the Moon, the centre of gravity lies within the body of the Earth itself.
18 September 2006, 07:14 AM
#15
Originally Posted by Bubba po
I was going to put this but I had to go out . The Earth and the Moon revolve around a common centre of gravity. Because of the massive disparity in size between the Earth and the Moon, the centre of gravity lies within the body of the Earth itself.
. The Earth and the Moon revolve around a common centre of gravity. Because of the massive disparity in size between the Earth and the Moon, the centre of gravity lies within the body of the Earth itself.carl already said that, except he spoke in fluent scientistese, hence my mocking.
M
18 September 2006, 10:57 AM
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Originally Posted by _Meridian_
carl already said that, except he spoke in fluent scientistese, hence my mocking.
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