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🧵 Untitled Thread

Anonymous No. 16461488

does the moon really pull the water on earth's surface with it's gravity? i find that pretty hard to believe.

Anonymous No. 16461490

Of course not. If that were true you'd see a whole lot of other objects conspicuously floating up into the sky.

Anonymous No. 16461499

>>16461488
earf pulled on moon's surface so hard it got tidally locked so that it rotates once for each orbit, making the same side always face us

Anonymous No. 16461506

>>16461490
who's to say that that's not how a significant portion of air currents are formed?

Anonymous No. 16461839

>>16461488
Earth is nearly flat and its oceans are like a tiny little layer on top. The Mariana Trench is about 11km below the sea level. Earth’s radius is about 6400km. That’s 0.17%.

Now, the distance between the earth and the moon is about 400000km. That means the distance between the far and the near side of the earth is 0.032. If you square that (due to inverse square law) you get 0.1%, which about matches the previous figure.

Anonymous No. 16461890

>>16461506
people who aren't retarded like you

Anonymous No. 16462438

>>16461839
Why how does that make water wave?

Would would the odds be that earth would rotate and revolve flawlessly, if it has a little wiggle wobble for whatever reason, might that induce waves?

Anonymous No. 16462454

>>16462438
>Why how does that make water wave?
Because one side is pulled harder than the other. If you take play dough ball and stretch it in one direction harder than the other, then it takes an elongated shape. It's not a wave in the proper sense, because it's uniform unlike "real waves" which fold onto one another.
>Would would the odds be that earth would rotate and revolve?
The water rotates with the earth; it has the same angular momentum. If it were different, then the friction would quickly equilibrate the two.
>if it has a little wiggle wobble for whatever reason
The only way that would happen is if there was some external force acting on it. This is the consequence of conservation of angular momentum. One example of such a force is the Moon, which induces tides. Any other force comes from other bodies in the solar system, so it's incredibly tiny in comparison.

Anonymous No. 16462508

>>16462438
I should correct some of the things I mentioned in my post >>16462454. Thanks for asking this, as it really tests my own physical intuition. I'll go over some things.
> If you take play dough ball and stretch it in one direction harder than the other, then it takes an elongated shape
A distinction is to be made with the hard "core" of the earth (what we colloquially call the Earth, ie the solid part) and the water. The "core" is rigid. It does not stretch as easily as water. The water forms a layer on top of it which stretches out itself. This means that even though the Moon pulls both the "core" and the water, the water can stretch more and thus is the one that gets elonagated.

This results in an apparent motion between the two. The "core", as a rigid body, revolves around every 24hr. The water not only revolves around every 24hr, but forms a bulge that revolves around every month, which creates apparent motion of the water with respect to the "core". This is what we observe as the tides.
>If it were different, then the friction would quickly equilibrate the two.
Now that I think about it, this is actually not quite true. There is indeed friction between the two. But that friction "borrows" energy from the gravitational potential of the two bodies and dissipates it as heat. This implies that the tides cause the Moon's orbit to decay a tiny bit. This effect is so small that it's basically ignorable on any reasonable time scales.

Anonymous No. 16464846

>>16462454
>The water rotates with the earth; it has the same angular momentum
But with all the grooves of earth surface and irregularities you mention, and the different of mass and surface tension between ground, air, water, and the earth's maybe wiggle precession, and whatever the mag field can do, is it really impossible?

But okay theory is, the waves represent the moons massive presence, pushing the gravity field, which pushes the water, the moon zipping around the earth pushes diagonal lines of force against the grain of the gravity field.

Does it effect the atmosphere like this too at all?

Anonymous No. 16464847

>>16462508
Yeah someone should make an animation and actually depict the gravity field and how the moons interaction with it directly results in the water being interacted with.

Trying to imagine mysterious never before seen things and their physicality, is very hard without seeing something of them

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Anonymous No. 16464894

>>16464846
I told you already. Any of these forces are internal. The do not change the total angular momentum.
>>16464847
It’s really not complicated. See pic.

Anonymous No. 16465059

>>16464894
Yeah but I want to see the elegant beauty of the invisible that is being caused to cause.

Like draw the gravity force field lines that are physically touching the water and making it wave, or okay this is why the debate of real not real force or cause cause cause cause effect down the line:

It may not be that the moons gravity force field lines touch the water waves, but they touch the earth's center of gravity body, and doing so jostles the earth in such a way as to shake its water

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Anonymous No. 16465083

>>16461488
If a moon can tear apart an asteroid with it's gravity it can pull on anything. The closets moons to saturn and jupiter have molten cores caused by the friction of tidal forces.

Anonymous No. 16465086

>>16465083
They could be seeing the moon over them while the tide is raising and not notice it

Anonymous No. 16465094

>>16465086
This is why the stupid tidal scene in interstellar would never happen. That planet would either be torn apart by the blackholes gravity, tidally locked, and if it did manage to create tidal forces that large, the planet itself would be shifting causing enough friction to make the planet a molten rock with no liquid water on it.

Anonymous No. 16465129

>>16464894
This got me wondering about gravity and why the center is so dense and so like this, and the idea of pressure, rock and a hard place
A requirement of pressure is sturdiness, if everything was flimsy there could be no pressure, just pushing easily pushed things this way and that, no grounding, no ground for no leg to stand on.

This may not be relevant, but yeah, center of gravity, it is feeling the weight the push on all sides.

The image of a large crowd of people confined in a space came to mind, and they are all facing 1 direction, call it left they are all facing, and those most left at the front of the line, are slow, let's even say not moving, those right of the area (it's not a line, say its a circular room they perfectly fill) begin running forward, compression, they push everyone forward, from the right everyone is pushing everyone forward, the people all the way in front are not moving, eventually max compression will be reached, and maybe those in front against the wall feel it most, I assumed with this description it would be made a center of gravity, a center of compression and pressure, but maybe to do that we simply remove the wall in the front left, and say they are now jogging forward, while the on the right side of the area, they are sprinting and pushing forward:

Slower front, quicker back, compressing everything into the middle? This still doesn't seem to suggest the tiny percentage of exactly in center being most pressed, perhaps the Suns rotations have something to do with it then,

Cntd.

Anonymous No. 16465133

>>16464894
>>16465129
cntd


The massive body is constantly slamming into plowing into field, this is a from outside inward pressure, a person running into 200 mph headwind while holding a large kite: but the person is very
massive, so they can keep running, but also the person is 10,000 people tied together by rope, so as they run into the wind, those infront are slowed down, while shielding those in back who keep running full speed, those infront are not stopped, just slowed, those in back running full speed, those in center as well, but I geuss everything compresses in the center, and the spinning likely has something to do with it, we have never tested gravity of a planet that does not rotate I don't think, we only know of gravity on rotating celestial bodies.

So along with maybe sum of parts magnetic and nuclear forces everything being compressed, some how the push and pull and offset momentum speeds of sides and spin, results in the center of a body being the hard place, that all surrounding rocks pile on and forcefully lay on top of.

Now there also could be something to however the bodies were first formed, earth for instance, believed to have very hot center, is it thought early earth was not so solid, but by virtue of being exposed to space, the inside remains more hot, and the outside cool? Lost the plot bit there but trying to wonder

Anonymous No. 16465154

>>16465133
>mph
Oh, I'm talking to an amerilard. No sense in throwing pearls before the swine then. I'm out.

Anonymous No. 16465187

>>16465154
You don't know what gravity is or how it works, I think that example might touch upon something of it

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Anonymous No. 16465217

>>16462438
Technically the moon isn't pulling the water near the equator up, it's pulling the water at the poles towards the equator, and that water pushes the water at the equator up away from the center of the earth.

What you're doing mathematically is drawing a triangle between the center of the earth, the north or south pole, and the center of the moon, and the water is running down that very shallow hill. This is also why there's a high tide on the side of the earth facing away from the moon. Also it's not always the equator, the earth's 27 degree axial tilt plus or minus the moon's 10 degree orbital tilt make the tallest point of the tide rove all over the place.

Anonymous No. 16465231

>>16465217
It also does something to the mind, it connects us all with water v1.

Anonymous No. 16465249

>>16465217
If the moon wasn't there, and the earth was oblate spheroid spinning would there be 0 horizontal axis water bulge

Anonymous No. 16467814

>>16461488
It's not hard to calculate the tidal forces yourself. Use the force to find the water displacement.