Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: neilep on 30/07/2020 15:48:03
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Say ewe had the ability to pause time , but ewe would be safe in your own bubble time thing to have fun and play.'
What would the temperature be ? The same as it was before you stopped time ? lower ? higher ?
whajafink ?
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Time is the space between sequential events. If you stop time, there will be no sequential events. Therefore no movement, hence no temperature.
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Say ewe had the ability to pause time , but ewe would be safe in your own bubble time thing to have fun and play.'
What would the temperature be ? The same as it was before you stopped time ?
I don't think time is something that 'goes', so pausing it isn't going to change the temperature. It would be whatever the thermometer says, which at a given moment in time is a fixed thing.
OK, in a strange set of physics where everything not in bubble-containing-you stops all motion, then as Alan says, temperature outside your bubble is meaningless despite the reading of the thermometer. I can find a picture of a thermometer in a book, and that is essentially 'stopped time'. What it reads has nothing to do with the actual temperature of the book. If I'm physically in that world instead of looking at it from an outside PoV, then I could not move my 'bubble' because I'd have to push past all this stationary air which cannot move, lacking any time in which to do so. I could not see outside my bubble because no light could move from the outside. So the bubble would just confine me into a small spherical universe, and asking the temperature out there is no different than asking about the temperature of a right triangle in a Euclidean plane.
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Time is the space between sequential events. If you stop time, there will be no sequential events. Therefore no movement, hence no temperature.
No temperature !!..an absence of temperature !..wooooooooooo !!......now that's interesting. Thank You Alan
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Say ewe had the ability to pause time , but ewe would be safe in your own bubble time thing to have fun and play.'
What would the temperature be ? The same as it was before you stopped time ?
I don't think time is something that 'goes', so pausing it isn't going to change the temperature. It would be whatever the thermometer says, which at a given moment in time is a fixed thing.
OK, in a strange set of physics where everything not in bubble-containing-you stops all motion, then as Alan says, temperature outside your bubble is meaningless despite the reading of the thermometer. I can find a picture of a thermometer in a book, and that is essentially 'stopped time'. What it reads has nothing to do with the actual temperature of the book. If I'm physically in that world instead of looking at it from an outside PoV, then I could not move my 'bubble' because I'd have to push past all this stationary air which cannot move, lacking any time in which to do so. I could not see outside my bubble because no light could move from the outside. So the bubble would just confine me into a small spherical universe, and asking the temperature out there is no different than asking about the temperature of a right triangle in a Euclidean plane.
Thank You Halc. I guess I wont be creating my own time bubble for some time ! (puts away Lego with a thump)
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Since temperature is a function of the average kinetic energy of the particles, and kinetic energy being a function of speed, time being stopped would mean that the temperature outside would be absolute zero. But time being stopped would also mean that it would not absorb any heat energy from inside your time bubble. The temperature inside the bubble would gradually rise to body temperature and more until you died. At that point it would remain stable.
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Time is the space between sequential events. If you stop time, there will be no sequential events
Agreed.
In the absence of anything else there can be no change, so time is meaningless
Agreed.
This looks like saying that in the absence of change, time is meaningless, and in the absence of time, change is meaningless.
Need to check that I’m not misinterpreting.
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Stopping time is an idea beloved of Sci Fi authors, but trying to translate it into the physical world provokes three questions.
1. If you cross a bulldog with a shih tzu, what do you call the resulting “breed”?
2. What is the chance that future generations will breed true?
3. Is this off topic?
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If you stopped time it would be cool.
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This looks like saying that in the absence of change, time is meaningless, and in the absence of time, change is meaningless.
Need to check that I’m not misinterpreting.
The assumption of causal symmetry is one of the vanities of philosophy, which is anathema.
Time being what separates sequential events, it is the dependent quantity. Change is not dependent on what we measure, but what we measure depends on change.
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The assumption of causal symmetry is one of the vanities of philosophy, which is anathema.
That’s why I needed to check, before trying to move on.
Time being what separates sequential events, it is the dependent quantity.
OK, so far.
Change is not dependent on what we measure, but what we measure depends on change.
That makes sense, as well, but, the OP was looking at the possibility of stopping time. #7 is probably all the indication you need that I’m very sceptical about this “possibility”. :)
However, it does link to Neilip’s question about time coming into existence. If there were no time, wouldn’t the concept of change be meaningless? Presumably, in the absence of time, everything would be somewhat meaningless, but it is particularly the time/change aspect that I'm interested in, here.