If the speed of light is constant in all reference frames in all directions, can shining a light in different directions give you your precise velocity ( direction and speed ) in space? عبدالله النجار
No, everything is like it's not moving relative to the speed of light. So you can't use only its speed to get your speed. You'd have to measure your speed relative to other massive objects if you wanted to do it that way. But what you can use with light is its relative wavelength (change in color), which does change with speed. The way light gets velocity easiest in that way is what a radar speed gun does. You point it at the moving thing, it sends out a radio signal, the signal reflects off the thing, and a receiver in the gun measures the change in the signal. The wavelength of the light will get smaller (blue shift) the faster the thing is moving towards it and larger (red shift) the faster the thing is moving away from it, and then the output will display the speed perpendicular to the gun. You'd need a ring of them if you wanted to get the direction of motion as well.
Susskind is a seriously cool dude
He inspires me a lot
I really love leonard susskind lectures
Dr Susskind is in my top 10, all time, dream team, of "total reality" nerds.
Curious to know who else are in the list
Works for artists too ! You'll Never get rid of it!!
how about listening to them and try to understand they're point of view that may help mankind gain more understanding .
If the speed of light is constant in all reference frames in all directions, can shining a light in different directions give you your precise velocity ( direction and speed ) in space?
عبدالله النجار
No, everything is like it's not moving relative to the speed of light. So you can't use only its speed to get your speed. You'd have to measure your speed relative to other massive objects if you wanted to do it that way. But what you can use with light is its relative wavelength (change in color), which does change with speed.
The way light gets velocity easiest in that way is what a radar speed gun does. You point it at the moving thing, it sends out a radio signal, the signal reflects off the thing, and a receiver in the gun measures the change in the signal. The wavelength of the light will get smaller (blue shift) the faster the thing is moving towards it and larger (red shift) the faster the thing is moving away from it, and then the output will display the speed perpendicular to the gun. You'd need a ring of them if you wanted to get the direction of motion as well.
Whoa that was actually useful advice
📠
String theory may yet be proven to be incorrect.
How do I contact this man? I have some information he would find very interesting.
Dr. Keating have me on I have legitimate answers for this not vague non sense
My favorite quantum "mechanic"