is time quantized?

Question

Me thinks yes, and multidimensional, symmetric w/ space (it's 3D)

Answer 1

According to quantum mechanics it is and the smallest measurable unit of time is about 10^ -43 seconds. That is a very small unit of time.

Answer 2

That's truly mind-numbing to contemplate! Even if space-time really is quantized, does it mean anything to try to separate out the 'time' part of space-time and ask if that is quantized? And if so, what does that mean? If you have a conceptual clock ticking at the smallest measurable interval, what happens between ticks? I'm confident this won't be resolved in my lifetime.

Answer 3

Okay first of all it was Lorenz that mathematically proved that time dialates. And seccondly it was proved with cesium clocks that went up into space going mach 3 for however long and they realized that the time for them were lagged relative to the cesium clocks that were on the ground. Time has to dialate so that ones velocity can only be an assymtote to the speed of light. If velocity is measured in dx/dt and if dx gets smaller (length contraction) and dt gets larger (time dialation) then your velocity is smaller!
And your relative mass increases so that your inertia increases which makes it more difficult to have the same acceleration with a constant force!

And time dialation is used for GPS, because you have a weaker gravitational field which corolates to an acceleration. Your acceleration affects your time dialation. I bet your a string theorist arent you?! Thats it, I bet your Brian Grene arent you!?

Answer 4

Theories of quantum gravity predict that space-time is quantized, however we have not yet observed this experimentally.

Answer 5

sure.