Relativity theory

GasGuzzler wrote:Without the spin the moon would face the sun with just only one face.

Xadoman wrote:Again, to visualize it. Take a clock facing upwards( grab at 3 clock for example) into your hand

Xadoman wrote:
Could anybody explain this to me. I have read that if we have identical twins and one of them is going to a space travel with a very fast spaceship( near the speed of light ) and when he returns the other twin has aged more. He could be an old man or even be dead.
I have also read that it takes 8 minutes for a light to reach from sun to earth. Lets say that one twin stays on earth and the other twin sits on the photon which starts it jorney towards earth. Lets say both are 20 years old at the starting point. If they meet on earth, is the twin on earth aged a lot more?

IBdaMann wrote:

GasGuzzler wrote:So the moon doesn't have day and night? That's a new one for me. Thanks bro.

Well, duhhh! That's why they call it the DARK SIDE OF THE MOON. Think about it. The moon is tidally locked to the earth. The tides locked the moon to the earth a billion years ago. You don't see the tides just floating off into space, do you? Just like you don't see the moon floating off into space.

Tidally locked.

Xadoman wrote:
Congratulation, you have been brainwashed by experts, Swan

Xadoman wrote:
IbdaMann, my spatial ability is awful. My examples are very easy even for a 5year old child. I simply understand what a spin is. The point is - if the clock or any other object indeed spins around its axis then you would see all the sides of the body. Lets say it spins 1/100 of a full turn over its axis during the one revolution( orbitting over the earth or smth). Now it is easy to see that it takes 100 revolutions to see all the sides of the body. If it makes one turn over axis during one revolution , then all the sides of the body is seen during this revolution.

The moon is tidally locked to earth which means that the moon does not spin anymore. It only revolves around the earth but does not spin anymore. This is what tidal lock means - a complete loss of the spin of the body. If there would a spin of the body then there would be tidal forces which would brake down the spin of the body which means there is no tidal lock.

IBdaMann wrote:

GasGuzzler wrote:Without the spin the moon would face the sun with just only one face.

How many faces does it have?

IBdaMann wrote:

Xadoman wrote:Hey IbdaMann, the GPS system by itself debunks relativity.

I have to hear this one.

Xadoman wrote:Here is a quote from Tom van Flandern( the guy worked with the GPS project):

"...the GPS engineers reset the clock rates, slowing them down before launch by 39,000
nanoseconds a day.

No, they did not.

Xadoman wrote:They then proceed to tick in orbit at the same rate as ground clocks

False.

Why are you citing this blurb instead of calling boooooolsch't? Aaaahhh, I know, you don't understand Relativity sufficiently to know when someone is booooolsch'ting you.

Regarding the first point above, the GPS engineers are the engineers. They are not the DoD customer. I don't know why you believe that the DoD would ever write into the contract that engineers can fuqq with the clocks.

Regarding the second point, nobody, I believe, in the DoD thinks that objects in different inertial frames of reference can somehow be synchronized. They understand Relativity and, unlike you, know what an inertial frame of reference is. Instead, the DoD does the best it can by using ground stations to send out a time pulse to minimize error.

Xadoman wrote: Ground observers can indeed pin-point their position to a high
degree of precision.

Did you catch the goalpost shift there? Did you notice that the speaker did not say "with perfect precision"? Did you catch the admission that there [would be] error?

Xadoman wrote:In (Einstein) theory, however, it was expected that because the orbiting clocks all move rapidly and with varying speeds relative to any ground observer (who may be anywhere on the Earth's surface), and since in Einstein's theory the relevant speed is always speed relative to the observer, it was expected that continuously varying relativistic corrections would have to be made to clock rates.

... and they do. They are fed timestamps from ground stations. Constantly.

Xadoman wrote:This in turn would have introduced an unworkable
complexity into the GPS.

Nope. They work just fine as you noticed.

.

Xadoman wrote:
Moon does not spin

Xadoman wrote:
- it is tidally locked to earth my friends

Xadoman wrote:
Already billions of years ago supposedly.

Xadoman wrote:
If it would spin then we would surely see the other side of it

Xadoman wrote:
This is why we have here on earth day and night alternations- because the earth spins.

Xadoman wrote:
If it were tidally locked to sun ( no spin) we would have no day and night alternations.

Xadoman wrote:
Here is a visual:

https://www.youtube.com/watch?v=cL3rOdAR-Xk&ab_channel=olegs

So the moon doesn't have day and night? That's a new one for me. Thanks bro.

I am talking about the earth. We have day and night alternations because of the spin of the earth. Simple as that. Without the spin in tidal lock the earth would face the sun with just only one face just like the moon faces earth currently.

Xadoman wrote:
IbdaMann, my spatial ability is awful.

Xadoman wrote:
My examples are very easy even for a 5year old child. I simply understand what a spin is.

Xadoman wrote:
The point is - if the clock or any other object indeed spins around its axis then you would see all the sides of the body.

Xadoman wrote:
Lets say it spins 1/100 of a full turn over its axis during the one revolution( orbitting over the earth or smth). Now it is easy to see that it takes 100 revolutions to see all the sides of the body. If it makes one turn over axis during one revolution , then all the sides of the body is seen during this revolution.

Xadoman wrote:
The Moon is tidally locked to earth which means that the moon does not spin anymore.

Xadoman wrote:
It only revolves around the earth but does not spin anymore.

Xadoman wrote:
This is what tidal lock means - a complete loss of the spin of the body.

Xadoman wrote:
If there would a spin of the body then there would be tidal forces which would brake down the spin of the body which means there is no tidal lock.

Tim the plumber wrote:

Xadoman wrote:
Could anybody explain this to me. I have read that if we have identical twins and one of them is going to a space travel with a very fast spaceship( near the speed of light ) and when he returns the other twin has aged more. He could be an old man or even be dead.
I have also read that it takes 8 minutes for a light to reach from sun to earth. Lets say that one twin stays on earth and the other twin sits on the photon which starts it jorney towards earth. Lets say both are 20 years old at the starting point. If they meet on earth, is the twin on earth aged a lot more?

[color=navy]Although it is extremely weird it is true.

If you go faster whilst the experience of time is the same for you the rate of time happening is different than the person who is not moving so fast.

Tim the plumber wrote:
Weird. Head bending. But just how it is.

Tim the plumber wrote:
Also your mass increases (sort of you get heavier).

Tim the plumber wrote:

IBdaMann wrote:

GasGuzzler wrote:So the moon doesn't have day and night? That's a new one for me. Thanks bro.

Well, duhhh! That's why they call it the DARK SIDE OF THE MOON. Think about it. The moon is tidally locked to the earth. The tides locked the moon to the earth a billion years ago. You don't see the tides just floating off into space, do you? Just like you don't see the moon floating off into space.

Tidally locked.

The dark side is dark to us. Not dark to sunshine.

The moon spins at the same rate as it orbits the earth. Thus we see the same side of it constantly.

If you take an apple and stab a long spike through it then stand with the long spike sticking out horizontally in front of you with the apple at the far end, then orbit (rotate) the spike around you the same face of the apple will always be facing you.

That's how the moon rotates and orbits.

Xadoman wrote:
Geosynhronous orbit is bollocks. It is physically impossible. Deal with it. You all have been "fuld". Where is Harvey, where is James, I need some common sense here.

But ok, I try to explain one more time. Take some kind of object , I have for example an empty chewing gum bottle which is cylindrical in chape, and hold it in front of you with extended arm and between two fingers vertically. Now look for some sign on the object , it makes things easier to understand this way. My chewing gum bottle for example has ORBIT written on it( just a coincidence).

Now just look at that sign . Do not rotate yourself. Stay still and just look.

Now with the help of the other arm start to rotate the object which is between your fingers. Please do not rotate yourself, it makes things too complicated . Stay still. Only rotate the object between your fingers( thumb and middle finger). You now start to see the sign( in my case Orbit) on the object alternatively to disappear and appear again.This is called SPIN.If you can you could also try to point your last finger joints in a way that they almost form like a vertical axle of the body. You now see that this axle is FIXED and the body spins around this FIXED axle. Ths is SPIN. I hope at this point you now have an idea what spin of the body means.

Now lets move to the actual case we have with the moon. Extend your arm with the object between the fingers and look at the visible sign( in my case ORBIT). Rotate your body 360 degrees with extended arm. Notice you do not have to spin the object with other arm to keep the sign constantly looking at you. The body made no spin around its fixed axis( your fingers pointing toward the body forming a vertical axis of the body)

Lets move to the case of "geosynchronous mumbo jumbo". The moon supposedly should spin one revolution over its axis during one orbit around the earth. In this case while you rotate your body 360 degrees you simultaneously spin the object with other hand 1 revolution over its axis. You see that in this case you obviously see all the parts of the body as expected.



Now what does it all mean? It simply means that the moon does not spin anymore. It has no spin.
The earth currently has spin and that is why we have alternating day and night. Very simple.
The moon has lost all of its spin already a long time ago and is tidally locked to earth. Tidal forces have despun the moon.

If you belive that the earth still spins ( 1 revolution during 27 days or so) then the moon would show all of its faces to the earth. Simple as that. And it would not be then tidally locked to earth. Simple as that.

I hope you guys got it now and do not let yourself be brainwashed by mainstream mumbojumbo.

Xadoman wrote: Geosynhronous orbit is bollocks.

Xadoman wrote: It is physically impossible. Deal with it.

Xadoman wrote:But ok, I try to explain one more time.

Xadoman wrote:
Geosynhronous orbit is bollocks. It is physically impossible. Deal with it. You all have been "fuld". Where is Harvey, where is James, I need some common sense here.

But ok, I try to explain one more time. Take some kind of object , I have for example an empty chewing gum bottle which is cylindrical in chape, and hold it in front of you with extended arm and between two fingers vertically. Now look for some sign on the object , it makes things easier to understand this way. My chewing gum bottle for example has ORBIT written on it( just a coincidence).

Now just look at that sign . Do not rotate yourself. Stay still and just look.

Now with the help of the other arm start to rotate the object which is between your fingers. Please do not rotate yourself, it makes things too complicated . Stay still. Only rotate the object between your fingers( thumb and middle finger). You now start to see the sign( in my case Orbit) on the object alternatively to disappear and appear again.This is called SPIN.If you can you could also try to point your last finger joints in a way that they almost form like a vertical axle of the body. You now see that this axle is FIXED and the body spins around this FIXED axle. Ths is SPIN. I hope at this point you now have an idea what spin of the body means.

Now lets move to the actual case we have with the moon. Extend your arm with the object between the fingers and look at the visible sign( in my case ORBIT). Rotate your body 360 degrees with extended arm. Notice you do not have to spin the object with other arm to keep the sign constantly looking at you. The body made no spin around its fixed axis( your fingers pointing toward the body forming a vertical axis of the body)

Lets move to the case of "geosynchronous mumbo jumbo". The moon supposedly should spin one revolution over its axis during one orbit around the earth. In this case while you rotate your body 360 degrees you simultaneously spin the object with other hand 1 revolution over its axis. You see that in this case you obviously see all the parts of the body as expected.



Now what does it all mean? It simply means that the moon does not spin anymore. It has no spin.
The earth currently has spin and that is why we have alternating day and night. Very simple.
The moon has lost all of its spin already a long time ago and is tidally locked to earth. Tidal forces have despun the moon.

If you belive that the earth still spins ( 1 revolution during 27 days or so) then the moon would show all of its faces to the earth. Simple as that. And it would not be then tidally locked to earth. Simple as that.

I hope you guys got it now and do not let yourself be brainwashed by mainstream mumbojumbo.

Xadoman wrote:
Geosynhronous orbit is bollocks. It is physically impossible. Deal with it. You all have been "fuld". Where is Harvey, where is James, I need some common sense here.
[quote]Xadoman wrote:
But ok, I try to explain one more time. Take some kind of object , I have for example an empty chewing gum bottle which is cylindrical in chape, and hold it in front of you with extended arm and between two fingers vertically. Now look for some sign on the object , it makes things easier to understand this way. My chewing gum bottle for example has ORBIT written on it( just a coincidence).

Now just look at that sign . Do not rotate yourself. Stay still and just look.

Now with the help of the other arm start to rotate the object which is between your fingers. Please do not rotate yourself, it makes things too complicated . Stay still. Only rotate the object between your fingers( thumb and middle finger). You now start to see the sign( in my case Orbit) on the object alternatively to disappear and appear again.This is called SPIN.If you can you could also try to point your last finger joints in a way that they almost form like a vertical axle of the body. You now see that this axle is FIXED and the body spins around this FIXED axle. Ths is SPIN. I hope at this point you now have an idea what spin of the body means.

Xadoman wrote:
Now lets move to the actual case we have with the moon. Extend your arm with the object between the fingers and look at the visible sign( in my case ORBIT). Rotate your body 360 degrees with extended arm. Notice you do not have to spin the object with other arm to keep the sign constantly looking at you. The body made no spin around its fixed axis( your fingers pointing toward the body forming a vertical axis of the body)

Xadoman wrote:
Lets move to the case of "geosynchronous mumbo jumbo". The moon supposedly should spin one revolution over its axis during one orbit around the earth.

Xadoman wrote:
In this case while you rotate your body 360 degrees you simultaneously spin the object with other hand 1 revolution over its axis. You see that in this case you obviously see all the parts of the body as expected.

Xadoman wrote:
Now what does it all mean? It simply means that the moon does not spin anymore. It has no spin.

Xadoman wrote:
The earth currently has spin and that is why we have alternating day and night. Very simple.
The moon has lost all of its spin already a long time ago and is tidally locked to earth. Tidal forces have despun the moon.

Xadoman wrote:
If you belive that the earth still spins ( 1 revolution during 27 days or so) then the moon would show all of its faces to the earth. Simple as that. And it would not be then tidally locked to earth. Simple as that.

Xadoman wrote:
I hope you guys got it now and do not let yourself be brainwashed by mainstream mumbojumbo.

Into the Night wrote:

Xadoman wrote:
Geosynhronous orbit is bollocks. It is physically impossible. Deal with it. You all have been "fuld". Where is Harvey, where is James, I need some common sense here.
[quote]Xadoman wrote:
But ok, I try to explain one more time. Take some kind of object , I have for example an empty chewing gum bottle which is cylindrical in chape, and hold it in front of you with extended arm and between two fingers vertically. Now look for some sign on the object , it makes things easier to understand this way. My chewing gum bottle for example has ORBIT written on it( just a coincidence).

Now just look at that sign . Do not rotate yourself. Stay still and just look.

Now with the help of the other arm start to rotate the object which is between your fingers. Please do not rotate yourself, it makes things too complicated . Stay still. Only rotate the object between your fingers( thumb and middle finger). You now start to see the sign( in my case Orbit) on the object alternatively to disappear and appear again.This is called SPIN.If you can you could also try to point your last finger joints in a way that they almost form like a vertical axle of the body. You now see that this axle is FIXED and the body spins around this FIXED axle. Ths is SPIN. I hope at this point you now have an idea what spin of the body means.

Actually, when you are just standing there looking at the bottle, it is spinning, end over end, just as you are. It moves with the surface of the Earth as it spins. You are also both orbiting the Earth, at the same rate as Earth's spin.

Xadoman wrote:
Now lets move to the actual case we have with the moon. Extend your arm with the object between the fingers and look at the visible sign( in my case ORBIT). Rotate your body 360 degrees with extended arm. Notice you do not have to spin the object with other arm to keep the sign constantly looking at you. The body made no spin around its fixed axis( your fingers pointing toward the body forming a vertical axis of the body)

The Moon is also orbiting the Earth, though at a different rate then you and the bottle are. The spin of the Moon is the same period as it's orbit, leaving one side facing the Earth at all times. The Moon is spinning just as you and the bottle are, just at a different rate.

Xadoman wrote:
Lets move to the case of "geosynchronous mumbo jumbo". The moon supposedly should spin one revolution over its axis during one orbit around the earth.

The Moon is not geosynchronous. You and the bottle are, though. The Moon does spin at the same rate as the period of it's orbit.

Xadoman wrote:
In this case while you rotate your body 360 degrees you simultaneously spin the object with other hand 1 revolution over its axis. You see that in this case you obviously see all the parts of the body as expected.

Nope. Just the same side facing Earth.

Xadoman wrote:
Now what does it all mean? It simply means that the moon does not spin anymore. It has no spin.

What it means is that you have no idea what is spinning and what isn't.

Xadoman wrote:
The earth currently has spin and that is why we have alternating day and night. Very simple.
The moon has lost all of its spin already a long time ago and is tidally locked to earth. Tidal forces have despun the moon.

The Moon is not tidally locked. It still moves across the sky as it waxes and wanes. We still have two tides each day, and their time they occur still shifts from day to day.

Xadoman wrote:
If you belive that the earth still spins ( 1 revolution during 27 days or so) then the moon would show all of its faces to the earth. Simple as that. And it would not be then tidally locked to earth. Simple as that.

If the Earth spun as the same period of the Moon's orbit, the Moon would not be moving across the sky, but remain fixed in the sky. There would be no more tides. The Moon would be further away as well. It would appear quite a bit smaller. Total solar eclipses would no longer be possible.

That would be tidally locked to the Earth.

During such a condition, the Earth is still spinning, and so is the Moon.

Xadoman wrote:
I hope you guys got it now and do not let yourself be brainwashed by mainstream mumbojumbo.

Since you refer to Newton's and Keppler's laws as 'mainstream mumbojumbo', you are referring to theories of science as 'mainstream mumbojumbo'. You are just denying science.

Using the convention that astronomers prefer to use (of sidereal rotations / orbit), Venus is slowing down like this (starting arbitrarily with 3 solar days left to lose):

2:1 (3 solar days) –– 1:1 (2 solar days left) –– 0:1 (1 solar day left) –– 1:1 (one long solar day on one side, perpetual darkness on the other side).

NOTE how Venus will have two 1:1 sidereal spin rates as Venus is fully despun!

Of course, from the sun's center-point perspective, Venus will spin down like this:

3 ~ 2 ~ 1 ~ 0

Xadoman wrote:
One hint: Venus.

It will soon appear to be a zero -rotational for sidereal view

0:1( rotations / orbits)

But it is only transitory and goes for 1:1 sidereal view when venus loses its spin and fully tidally locks.


Venus countdown looks like this

Using the convention that astronomers prefer to use (of sidereal rotations / orbit), Venus is slowing down like this (starting arbitrarily with 3 solar days left to lose):

2:1 (3 solar days) –– 1:1 (2 solar days left) –– 0:1 (1 solar day left) –– 1:1 (one long solar day on one side, perpetual darkness on the other side).

NOTE how Venus will have two 1:1 sidereal spin rates as Venus is fully despun!

Of course, from the sun's center-point perspective, Venus will spin down like this:

3 ~ 2 ~ 1 ~ 0

Venus has no moon. It's spin is not slowing.

Xadoman wrote:

Venus has no moon. It's spin is not slowing.

Have not you hear about tidal braking? Venus will be eventually tidally locked to sun wich means only one side faces the sun( just like the moon is tidally locked to earth , only one side faces the earth).

Xadoman wrote:

Venus has no moon. It's spin is not slowing.

Have not you hear about tidal braking? Venus will be eventually tidally locked to sun wich means only one side faces the sun( just like the moon is tidally locked to earth , only one side faces the earth).

No. The planet won't last that long.

You have your dog omelet yet

2:1 (3 solar days) –– 1:1 (2 solar days left) –– 0:1 (1 solar day left) –– 1:1 (one long solar day on one side, perpetual darkness on the other side).

Xadoman wrote:Would not it be more logical that the Venus would simply stop spinning with a countdown 3-2-1-0?

Xadoman, what is your native language? I'd like an opportunity to help you understand in your native speech.

If our moon spun down like this:

4 ~ 3 ~ 2 ~ 1

Then, where's the dang ZERO?

The sidereal perspective does have a zero when a body spins down, but you need to look at Venus to find it.

Many Wiki pages on astronomy are wrong, but this is a good one that should explain why Venus will have a ZERO polar axial rotation rate as Venus is fully despun:

Sidereal time - Wikipedia

As far as I can determine, the only practical use for sidereal rotation rates would be when aiming Earth-bound telescopes since astronomers need to account for two 360° circular motions, Earth's daily 360° polar axial rotations, and Earth's yearly 360° orbit.

Other than that one practical use, the sidereal perspective just confuses the kajeebers out of most folks, even many astronomers.

Our closest neighbor, Venus, proves that the sidereal perspective has its inherent quirks.

Since Venus has a retrograde (CW) polar axial rotation, but orbits normally in the opposite CCW direction, aggregating these two opposite 360º circular motions together will instead result in one less apparent sidereal rotation, giving Venus 0.92 sidereal rotations, when in fact, Venus still has nearly two CW polar axial rotations left to lose:

—-snip—-

* A day on the surface of Venus (solar day) would appear to take 117 Earth days

* A year on Venus takes 225 Earth days.

Venus Facts - Interesting Facts about Planet Venus

Thus, a Venusian solar day lasts 117 Earth days, versus 225 Earth days to complete an orbit, so there's your 1.92 ratio.

Curiously, since Venus is now at 1.92 CW polar axial rotations per orbit, Venus has recently passed thru a rate of two (2) solar days per orbit, and after Venus loses 0.92 CW rotations of its remaining 1.92 CW polar rotations, Venus will then have a sidereal rotation rate of zero (0:1).

SO, there's your sidereal ZERO!

Since Venus actually has 1.92 solar days left today, at zero sidereal rotations (0:1) Venus will still have one final CW polar rotation left to lose before stopping at a final 1:1 sidereal spin rate.

As Venus proves, an astronomical body with a 0:1 sidereal rotation rate is possible, it just doesn't last for very long since a 0:1 rotation rate is transitory as it spins down to 1:1.

In short, the sidereal perspective is not some *God's Eye* view of reality since the sidereal perspective has its obvious quirks, which are more readily apparent with Venus due to Venus' retrograde CW rotations!

Using the convention that astronomers prefer to use (of sidereal rotations / orbit), Venus is slowing down like this (starting arbitrarily with 3 solar days left to lose):

2:1 (3 solar days) –– 1:1 (2 solar days left) –– 0:1 (1 solar day left) –– 1:1 (one long solar day on one side, perpetual darkness on the other side).

2 ~ 1 ~ 0 ~ 1

NOTE how Venus will have two 1:1 sidereal spin rates as Venus is fully despun!

Of course, from the sun's center-point perspective, Venus will spin down like this:

3 ~ 2 ~ 1 ~ 0

Remember, the center-point and sidereal (outside) perspectives will always differ by one (1), and as Venus proves, the sidereal perspective has its obvious quirks!

Clearly, the sidereal perspective does not reflect reality!

Xadoman wrote:

No. The planet won't last that long.

I know, but that does not change the fact that Venus is losing its spin due to tidal braking.

Xadoman wrote:
Here is another question that I started to tought about.

The moon is tidally locked to earth but the earth is still spinning.

Xadoman wrote:
Eventually the earth would also tidally lock to moon which means that earth s spin would match the moon s orbit.

Xadoman wrote:
But there is also the sun which wants to tidally lock the earth. If the earth would be tidally locked to the sun then the earth would face only the sun. Then the moon could not orbit the earth anymore. Then if sun tidally locks to something, then the earth and moon could not orbit the sun anymore. And so on and on.

Xadoman wrote:

You have your dog omelet yet

2:1 (3 solar days) –– 1:1 (2 solar days left) –– 0:1 (1 solar day left) –– 1:1 (one long solar day on one side, perpetual darkness on the other side).

Hey loonie , could you explain how Venus coul be zero rotational at 0:1 but then starts to rotate again and ends in "geosynhronous orbit" at 1:1.

Would not it be more logical that the Venus would simply stop spinning with a countdown 3-2-1-0?

Xadoman wrote:

Xadoman, what is your native language? I'd like an opportunity to help you understand in your native speech.

Venus is closing into 0:1 zero rotational body from sidereal view.

Xadoman wrote:
That is a fact.

Xadoman wrote:
It is a transitory state.

Xadoman wrote:
It will eventually be locked to the sun at 1:1

Xadoman wrote:
( like moon is locked to earth at 1:1).

Into the Night wrote:

Xadoman wrote:

Xadoman, what is your native language? I'd like an opportunity to help you understand in your native speech.

Venus is closing into 0:1 zero rotational body from sidereal view.

It isn't.

Xadoman wrote:
That is a fact.

Not a fact. An argument. Learn what 'fact' means. It does not mean 'proof' nor Universal Truth.

Xadoman wrote:
It is a transitory state.

It is not transitory at all.

Xadoman wrote:
It will eventually be locked to the sun at 1:1

No. It will not be locked at all. Attempted use of ratio for void purpose (buzzword).

Xadoman wrote:
( like moon is locked to earth at 1:1).

It isn't. Attempted use of ratio for void purpose (buzzword).

Xadoman wrote:
Learning video for ITN about tidal lock:

https://www.youtube.com/watch?v=lmc5XqChJpY&ab_channel=IsaacArthur

Ignore the part where he says that moon is still rotating over its axis. Otherwise the tidal braking is made clear.

In short:

Moon is tidally locked to earth. It has lost all of its spin.

From centre point view - 0:1( 0 rotations per 1 orbit)
From sidereal view - 1:1 ( 1 rotation per 1 orbit)


Similarily the Venus loses its spin because of tidal braking. Eventually it would only face the sun with one side( the sun would explode before that in real life) . Exctly like the moon is facing the earth now.

Xadoman wrote:
Check this out , Swan.

https://teslauniverse.com/nikola-tesla/articles/moons-rotation