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Does matter take up time?

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ruveyn
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19 Jan 2013, 12:48 pm

physicsnut42 wrote:

Nothing material is moving, so you don't break the speed limit.


Photons are quite material. And enough of them shot from a laser which co-ordinates the phases of high energy photons into a coherent emission, will burn a nice neat hole through your body.

Light is very material and very physical.

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techstepgenr8tion
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19 Jan 2013, 2:28 pm

physicsnut42 wrote:
It is, but apparently the dot on the moon was going faster than light would normally go, and even light can't go that fast. Here, I found a video that explains it:

Nothing material is moving, so you don't break the speed limit.

Ok, so triangulation of a signal not the signal itself. That's information rather than light. It's still not quite like the claim that you can spin one electron here and make another in Antares spin the opposite way simultaneously but its still interesting to broach nonetheless.



ruveyn
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19 Jan 2013, 6:07 pm

Try this experiment. Take a garden hose and set the nozzle to hi-velocity. Now spin the hose around rapidly. The stream of water from the hose bends and does not go in a straight line. Ditto of light. You cannot make the spot the light makes on a very far wall travel faster than light.

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Kenjuudo
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03 Mar 2013, 2:25 am

ruveyn wrote:
Try this experiment. Take a garden hose and set the nozzle to hi-velocity. Now spin the hose around rapidly. The stream of water from the hose bends and does not go in a straight line. Ditto of light. You cannot make the spot the light makes on a very far wall travel faster than light.

ruveyn
Actually, you can. But note that the spot is just your interpretation of what happens when light hits there, not a physical entity.


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naturalplastic
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05 Mar 2013, 10:14 am

ruveyn wrote:
ripped wrote:
Jitro wrote:
If matter takes up space, and space and time are linked, does that mean the matter also takes up time?


Does matter take up time?
Matter is made of energy within space-time.
In our current understanding all matter must exist within some point in time.
Whether this translates as 'taking up time' I don't know.


There does not exist any material entity that has zero duration.

ruveyn


A tautology if ive ever heard one!

Objects that dont exist for any length of time...dont exist!

Lol!



ruveyn
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06 Mar 2013, 6:57 am

Even virtual particles have a duration. A very small duration, but they exist in time nevertheless. No thing can exist and not exist in time.

Also the bright areas might have been computer enhanced so that venus could be clearly seen as a bright dot.

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06 Mar 2013, 10:29 am

naturalplastic wrote:
A tautology if ive ever heard one! Objects that dont exist for any length of time...dont exist! Lol!

The first rule of Tautology Club is the first rule of Tautology Club!



techstepgenr8tion
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06 Mar 2013, 10:33 am

naturalplastic wrote:
A tautology if ive ever heard one!

Objects that dont exist for any length of time...dont exist!

Lol!

I think a quantum physicist would say to something like he said "Kid (Newtonian)... go play with blocks".

All too many things that intuitively shouldn't happen do when you get to that level so I'd agree that there's little we can just rule out on knee-jerk reflex.



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06 Mar 2013, 10:51 am

Any duration less than the Planck Time is theoretically un-measurable. That is, if something were to exist for less than 1x10^-43 seconds, its existence could never be verified, and could therefore be said to practically not exist at all.

Wikipedia wrote:
"One Planck time is the time it would take a photon traveling at the speed of light to cross a distance equal to one Planck length. Theoretically, this is the smallest time measurement that will ever be possible, roughly 10^-43 seconds. Within the framework of the laws of physics as we understand them today, for times less than one Planck time apart, we can neither measure nor detect any change."


(NOTE: 1x10^-43 seconds = 0.000,000,000,000,000,000,000,000,000,000,000,000,000,000,1 seconds.)