How fast are you moving right now? - Tucker Hiatt
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Date: 2020-08-22
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Comments and reviews: 10
memeo
There are a few things not entirely right about the info in this vid. Firstly, space is not a void, it is full of quantum fluctuations even when you are in such deep space that there are no real particles to be found. As far as I know there aren't any quantum voids, so the only true nothing would be what is 'outside' our universe. Also, it is true that in most circumstances, we can only judge velocity based on something relative to us, but if it is true that the universe has a limit for how fast something can move through it aka c, or lightspeed, you must get closer or further from that speed when you accelerate. I don't know whether there is a way to know how close an object is to light speed, but the fact that it exists as a limit surely proves that all velocity is absolute to an extent.
And of course, we know that while matter can only move at sub-c speeds through space, space itself can move faster than this, which is why the observable universe is shrinking- parts of space are moving faster than the light, so the light never reaches us.
Someone please clarify where I am wrong but it just seems that parts of this video differ from other things I learned. Edit: I also just realised about gravitational waves, that move through space as a medium, and the fact that gravity is warped spacetime. If space is just a void or nothing, how can gravity warp it? Why do we talk about spacetime as some sort of thing, if it is indeed nothing?
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There are a few things not entirely right about the info in this vid. Firstly, space is not a void, it is full of quantum fluctuations even when you are in such deep space that there are no real particles to be found. As far as I know there aren't any quantum voids, so the only true nothing would be what is 'outside' our universe. Also, it is true that in most circumstances, we can only judge velocity based on something relative to us, but if it is true that the universe has a limit for how fast something can move through it aka c, or lightspeed, you must get closer or further from that speed when you accelerate. I don't know whether there is a way to know how close an object is to light speed, but the fact that it exists as a limit surely proves that all velocity is absolute to an extent.
And of course, we know that while matter can only move at sub-c speeds through space, space itself can move faster than this, which is why the observable universe is shrinking- parts of space are moving faster than the light, so the light never reaches us.
Someone please clarify where I am wrong but it just seems that parts of this video differ from other things I learned. Edit: I also just realised about gravitational waves, that move through space as a medium, and the fact that gravity is warped spacetime. If space is just a void or nothing, how can gravity warp it? Why do we talk about spacetime as some sort of thing, if it is indeed nothing?
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DNFrozen
mmh i don't 100% agree with this video
there must be the ultimate point of reference to determine speed because the speed of light is a constant.
if you use a laserpointer on a moving train the light it will still have the same speed
but my speed relative to laser would be different as if i would not on the train
so there must be the ultimate rest point where i can use a laserpointer in every direction and my speed relative to the light would be the same
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mmh i don't 100% agree with this video
there must be the ultimate point of reference to determine speed because the speed of light is a constant.
if you use a laserpointer on a moving train the light it will still have the same speed
but my speed relative to laser would be different as if i would not on the train
so there must be the ultimate rest point where i can use a laserpointer in every direction and my speed relative to the light would be the same
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AlphaApple
For those who are familiar with the metric system:
At 0: 20: So, a second tempting answer is, 30 km/s around the Sun.
At 2: 16: Earth's speed is 30 km/s relative to the Sun.
At 2: 25: Your speed is zero relative to your easy chair, but depending on where you sit, it is hundreds of, if not over a thousand, kilometers per hour relative to Earth's center.
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For those who are familiar with the metric system:
At 0: 20: So, a second tempting answer is, 30 km/s around the Sun.
At 2: 16: Earth's speed is 30 km/s relative to the Sun.
At 2: 25: Your speed is zero relative to your easy chair, but depending on where you sit, it is hundreds of, if not over a thousand, kilometers per hour relative to Earth's center.
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Chris
It's no coincidence that the Sun appears to be same size an distance as the Moon an they follow each others pattern. The Sun is not so huge that at 93 million miles away it appears same size as Moon. The odds of all these things in combination are beyond astronomical! The Sun is the same size an distance as Moon just as they appear to be.
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It's no coincidence that the Sun appears to be same size an distance as the Moon an they follow each others pattern. The Sun is not so huge that at 93 million miles away it appears same size as Moon. The odds of all these things in combination are beyond astronomical! The Sun is the same size an distance as Moon just as they appear to be.
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Slartibartfast
The cartoon of the orbiting astronauts hitting a baseball to Earth really should not have been included in this presentation.
It's scientifically incorrect, if from orbit you throw something the size of a baseball towards Earth it will not hit the Earth but will change its orbit to a more oval shaped orbit.
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The cartoon of the orbiting astronauts hitting a baseball to Earth really should not have been included in this presentation.
It's scientifically incorrect, if from orbit you throw something the size of a baseball towards Earth it will not hit the Earth but will change its orbit to a more oval shaped orbit.
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DannyDaDuffyDucking
Depends on what you're comparing it to
If you try to go with some type of absolute speed that's not gonna work you have to compare it to something
If you go out enough you'll be moving the speed your part of the universe is moving but that relative
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Depends on what you're comparing it to
If you try to go with some type of absolute speed that's not gonna work you have to compare it to something
If you go out enough you'll be moving the speed your part of the universe is moving but that relative
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Nick
Should have consulted a Trekkie first. The Enterprise triangulates speed using the center of the galaxy as a point of reference and known local points of reference such as stars. Just like sailors of the past used the stars to determine their location.
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Should have consulted a Trekkie first. The Enterprise triangulates speed using the center of the galaxy as a point of reference and known local points of reference such as stars. Just like sailors of the past used the stars to determine their location.
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screening1
Big mistake. You said: The space is no thing It is misleading. If you are honest you should to say: The space is not empty, it's some thing we still do not know. TED again make me uncomfortable, looks like big cheating.
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Big mistake. You said: The space is no thing It is misleading. If you are honest you should to say: The space is not empty, it's some thing we still do not know. TED again make me uncomfortable, looks like big cheating.
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Dick
We all are running at the speed of light. That's why time is flowing and we get old. We live in 4D space but we only can perceive 3D. So we perceive outer space as a time. Time is also space moving at the speed of light.
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We all are running at the speed of light. That's why time is flowing and we get old. We live in 4D space but we only can perceive 3D. So we perceive outer space as a time. Time is also space moving at the speed of light.
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kiran
I thought I'm moving fast,
Then
I thought earth is moviing fast,
Then
I thought Sun is moving fast,
Then
I thought galaxy is moving fast,
Now!
I'm thinking why my head is moving fast.
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I thought I'm moving fast,
Then
I thought earth is moviing fast,
Then
I thought Sun is moving fast,
Then
I thought galaxy is moving fast,
Now!
I'm thinking why my head is moving fast.
reply
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