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#207
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jgk **User deleted account** (08/17/2012) [-]
Did i hear him saying it records events in reverse. Hows that possible even before the event has happened? if it happened then how did he shoot it in reverse!! Can someone explain please.
No, he means that because the camera is taking photos so goddamn fast, it's recording the ripples closest to us sooner than the ones further away. When the light bounces off the table closer to the camera, it reaches the camera sooner than the light bouncing off the far end of the table, and because the camera is taking pictures so fast that light only travels 6mm between frames it's seeing the closer end of the ripple first, causing a distortion in the ripples shape.
To put it another way, imagine you have a row of swings, all swinging at the same speed, all at the same time, so that in real time you see them all swinging in sync. You take this special camera, and take a photo when the first swing is at the apex of its swing. Because it is photographing so fast, the further away the swing is the longer the time delay between when light bounces off the swing and when light reaches the camera. Even though all the swings are really in sync, you would get a video where the further away a swing is the further behind the closest swing it would appear to be, simply because the light from the further swings is taking longer to reach the camera.
I honestly cannot think of any other way to explain this.
To put it another way, imagine you have a row of swings, all swinging at the same speed, all at the same time, so that in real time you see them all swinging in sync. You take this special camera, and take a photo when the first swing is at the apex of its swing. Because it is photographing so fast, the further away the swing is the longer the time delay between when light bounces off the swing and when light reaches the camera. Even though all the swings are really in sync, you would get a video where the further away a swing is the further behind the closest swing it would appear to be, simply because the light from the further swings is taking longer to reach the camera.
I honestly cannot think of any other way to explain this.
#217 to #212
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jgk **User deleted account** (08/17/2012) [-]
Yes moving at the speed of light causes time dilation, Only moving faster than light causes reversal , But then won't a process reversal cause Entropy decrease? What could have addressed the decrease in Entropy? Is there a law in quantum mechanics which address this discrepancy?