- #1
EPR
- 440
- 104
Just wanted to point out that i have never seen a better depiction of Einsteinian gravity, if a little hard to swallow and somewhat baffling to human intuition.
In the following experiment prof. Brian Cox(he used to be on this forum?) says:
"Isaac Newton would say that the ball and the feather fall because there’s a force pulling them down: gravity,’.
But Einstein imagined the scene very differently.
"The “happiest thought of his life” [as Einstein called it] was this; the reason the bowling ball and the feather fall together is because they’re not falling.
"They’re standing still. There is no force acting on them at all."He reasoned that if you couldn’t see the background, there’d be no way of knowing that the ball and the feathers were being accelerated towards the Earth.
"So he concluded they weren’t."
So, the ball and the feather are not falling. They are standing still. What moves is the observer through 4D spacetime experiencing the curvature of spacetime as gravity.
In the following experiment prof. Brian Cox(he used to be on this forum?) says:
"Isaac Newton would say that the ball and the feather fall because there’s a force pulling them down: gravity,’.
But Einstein imagined the scene very differently.
"The “happiest thought of his life” [as Einstein called it] was this; the reason the bowling ball and the feather fall together is because they’re not falling.
"They’re standing still. There is no force acting on them at all."He reasoned that if you couldn’t see the background, there’d be no way of knowing that the ball and the feathers were being accelerated towards the Earth.
"So he concluded they weren’t."
So, the ball and the feather are not falling. They are standing still. What moves is the observer through 4D spacetime experiencing the curvature of spacetime as gravity.