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So why do I still feel a force pushing me towards the centre of the earth, like Yh understand that I’m currently existing within curved space time but why does that automatically mean that I just be moving through it,
ОтветитьAll models are wrong...but some models are useful. I'd argue that the model of gravity as a field is useful.
ОтветитьI really wish you expanded on why nobody has been able to test whether free falling charged particles actually radiate. Did you ever expand on this elsewhere?
ОтветитьIf only we could really see the manifold of spacetime.
ОтветитьOk your wrong, though, because the normal force doesn’t cause you to accelerate up at all, that’s just relativity, the acceleration of the ground is really just an acceleration in inertial frames, not the normal force. Your taking two different things and connecting them together. I think.
ОтветитьI like to think that matter displaces space time, like an object displaces water. The gravity we experience is simply the pressure of space time trying to 'press' it's way back. The denser the object (more mass) the more space time its displaced.
ОтветитьSometimes i take for granted how insane Einstein brain was. That deflection and predictive accuracy he just theorized in his head and then it proved to be accurate in real world.
ОтветитьThere is a question botherd me so much. What the absolute gravimeter ,like A10, measures, gravity or gravitation?
ОтветитьMy only problem with nuclear waste is that it is not recycled. The spent fuel is only somewhat spent. If companies had a way to recycle the fuel or purify it farther once used it would be perfect. And would eliminate most nuclear waste storage. Growing up next to a active plant has made me comfortable with it.
ОтветитьIt’s a bit misleading to say that general relativity says there are no gravitational fields. What is actually says is that, yes gravity is not a force. And there are not gravitational FORCE fields.
But there is a gravitational field. Which is the curvature of space time. The field is curved space time.
If you want to understand what I mean a bit better. Look into the river model.
The curvature of space is gravity.
Gravity does not eminent from mass/matter. Like magnetism does. Like we have been lead to believe our entire lives.
It is an effect of matter Curving space.
Love the little spaceship you made and the animations, 👍
ОтветитьOkay....so......who tf put letters in math? How the hell am I suppose to know what all those random letters on top of more letters and no numbers it's just, why? I thought math delt with numbers. This isn't an angry rant just a curious one
Ответитьso the time is a illusion concept made by acceleration?
Ответитьso acceleration = time?
Ответитьso acceleration is what makes matter exist?
Ответитьso the light also would bend around the earth right?
ОтветитьI was thinking about this video, as I do every now and then, and I realised that perhaps the ball on a fabric is actually a better analogy than we give it credit for? Yes, we don't draw the correct intuition from it, but is the ball not arguably doing exactly what you described? After all, we don't throw it in a curve. We throw it straight, and it indeed follows a straight line on the deformed fabric.
ОтветитьThis is ok for tricking kids. But try leaving earth and we will see what gravity has to say about it. Ever hear of trajectory? I believe gravity has a lot to say about it. 4 fundamental forces of physics. GRAVITY, magnetism, weak and strong nuclear. Like i said. Easy to fool kids and ignorant people.
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