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Post by jaydee on Oct 18, 2022 10:56:28 GMT
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Post by Red Rackham on Nov 11, 2022 3:56:51 GMT
Interesting. What I don't understand is gravity, more precisely, how the moons gravity affects tides. I know it does, we all know it does. But why, or how?
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Post by Toreador on Nov 11, 2022 7:13:50 GMT
Interesting. What I don't understand is gravity, more precisely, how the moons gravity affects tides. I know it does, we all know it does. But why, or how? It's a drag. |
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Post by Red Rackham on Nov 11, 2022 7:36:34 GMT
Interesting. What I don't understand is gravity, more precisely, how the moons gravity affects tides. I know it does, we all know it does. But why, or how? It's a drag. Indeed, I'm guessing you're not a scientist? Hey it's a longshot. |
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Post by Toreador on Nov 11, 2022 7:43:46 GMT
Indeed, I'm guessing you're not a scientist? Hey it's a longshot. I once was but it's a long time ago I decided it wasn't for me. |
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Post by Handyman on Nov 11, 2022 14:49:37 GMT
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Post by Red Rackham on Nov 12, 2022 11:16:13 GMT
Thank you for that Handyman. I understand that tides are influenced by the gravitational pull of the moon, what I don't understand is, how? If I throw an apple into the air it will reach a point where it runs out of energy, at that point gravity pulls it back to earth. I understand gravity. However, having watched your link I still don't understand how the gravitational pull of the moon affects the tides. Particularly since the effects of gravity are so much less in space than here on earth. I read this, quote: "Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance". Therefore, how can gravity from a tiny celestial body like the moon be strong enough to affect tides and oceans here on earth? Clearly it does, but how? I suspect my level of curiosity and ignorance would test the patience of Stephen Hawking, lol. |
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Post by Deleted on Nov 12, 2022 13:52:33 GMT
As you know RR, water is a fluid and there is a huge amount in the oceans. Gravity, which is understood about as much as magnetism , pulls the water towards the moon. It therefore heaps the water on the side of the earth facing the moon. As the moon goes round the earth about every 28 days the tides get (24 hours divided by 28), about 50 minutes later each day. There is also an effect on the far side of the earth from the Moon. The water on the sides of the earth are quite easy to be pulled and the result is a wave of varying heights which travels around the globe twice daily.
The Sun has a lesser but significant effect causing higher tides when they work together (spring tides are nothing to do with the season) and neap tides when the sun and moon are at 90 degrees separation.
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Post by Red Rackham on Nov 12, 2022 14:16:21 GMT
As you know RR, water is a fluid and there is a huge amount in the oceans. Gravity, which is understood about as much as magnetism , pulls the water towards the moon. It therefore heaps the water on the side of the earth facing the moon. As the moon goes round the earth about every 28 days the tides get (24 hours divided by 28), about 50 minutes later each day. There is also an effect on the far side of the earth from the Moon. The water on the sides of the earth are quite easy to be pulled and the result is a wave of varying heights which travels around the globe twice daily. The Sun has a lesser but significant effect causing higher tides when they work together (spring tides are nothing to do with the season) and neap tides when the sun and moon are at 90 degrees separation. Yes indeed. Thank you, I understand what happens, I don't understand how it happens. Perhaps the question I should be asking is, what is gravity. I sense I'm digging a hole for myself here lol. |
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Post by colbops on Nov 12, 2022 14:21:14 GMT
I doubt that somehow, but lets hear it! could a Nobel prize be coming your way I wonder........ |
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Post by Red Rackham on Nov 12, 2022 14:23:22 GMT
I doubt that somehow, but lets hear it! could a Nobel prize be coming your way I wonder........ Fair point. |
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Post by Deleted on Nov 12, 2022 14:28:20 GMT
As I alluded, no one on Earth understands gravity or magnetism that well.
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Post by Montegriffo on Nov 12, 2022 15:18:11 GMT
Thank you for that Handyman. I understand that tides are influenced by the gravitational pull of the moon, what I don't understand is, how? If I throw an apple into the air it will reach a point where it runs out of energy, at that point gravity pulls it back to earth. I understand gravity. However, having watched your link I still don't understand how the gravitational pull of the moon affects the tides. Particularly since the effects of gravity are so much less in space than here on earth. I read this, quote: "Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance". Therefore, how can gravity from a tiny celestial body like the moon be strong enough to affect tides and oceans here on earth? Clearly it does, but how? I suspect my level of curiosity and ignorance would test the patience of Stephen Hawking, lol. |
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Post by Red Rackham on Nov 12, 2022 15:33:04 GMT
LOL very good, thank you for that Monte. The fact that I have something in common with Alan Davies is a comfort, I think.
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Post by Montegriffo on Nov 12, 2022 15:46:03 GMT
I'm here to serve...
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