There was a bit suggesting that time doesn't exist in Newton law and Maxwell laws that only deal with forces.
Newton law is indeed about forces, but time immediately comes in with
Force = Masse x Gravity
where gravity is 9.81 ms-2 on Earth. Force in Newton, Masse in Kilo.
Maxwell laws deal with charges and currents. A current is charge per second.
Maxwell-Faraday law clearly explains induction with a field that varies in time
Immediate everyday use of Maxwell laws is
Inductor with V = L dI/dt
Capacitor with I = C dV/dt
Newton law is indeed about forces, but time immediately comes in with
Force = Masse x Gravity
where gravity is 9.81 ms-2 on Earth. Force in Newton, Masse in Kilo.
Maxwell laws deal with charges and currents. A current is charge per second.
Maxwell-Faraday law clearly explains induction with a field that varies in time
Immediate everyday use of Maxwell laws is
Inductor with V = L dI/dt
Capacitor with I = C dV/dt
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Good points. However, the point I was making is that these phenomena were formulated as forces happenning over time and I think this is just the way the human mind is configured to work - pretty much what Lee Smolin seems to say as well. I am asking if they cannot be reformulated at a more fundamental level with time as a consequence of change in energy - ie an entropic view. This might well raise more questions about the nature of energy.
To be sure, the equations from Maxwell are amongst the most accurate in all of physics, but again, like GR, they provide an answer to the question as to why a phenomena behaves the way it does (Maxwell doing that for Faraday and Einstein for Newton). But science has to iterate again to ask why as there must be a deeper mechanism at work with EM and with gravity.
It does seem though that there is a surge of interest on the subject of time. Jim Al-Kalili (who recently got funding from somewhere to explore the subject with a team of other physcists) , Smolin (for many years now) and a few others are looking into the subject.
🙂
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Thermal energy may be 0 but electrons are still whizzing around nuclei and most of the atomic fundamentals work as they should as far as I know.
BTW there was a claim made a while back that the closest temperature to absolute zero in the whole universe (assumes no other intelligent beings in the universe doing the same stuff of course) is here on Earth in a lab. IIRC the figure was 50 nano Kelvin within 0K
Steve, my earlier question about entropy was if time is an illusion, it does not seem to gel with the concept of entropy.
Many scientists suspect that the answer to what time is could lie in the mismatch between how it manifests in general relativity and quantum mechanics.
In relativity there is no unique way of defining the passage of time. It is relative, depending on speed or gravity.
However, in quantum mechanics time is an absolute. It provides a smooth background into which we can plug our equations.
Solving the problem of how time can be those two conflicting things at once is a crucial issue in physics.
One thing is certain, we are not going to solve the problem of time in this thread.
Time to move on?
Thanks for the heads up, but I suspect that the New Scientist is no more likely to solve the problem of time than we are.
Anyhow, here's what the 'Time' issue has to offer: https://shop.newscientist.com/products/new-scientist-18th-june-2022?variant=40100966170721
No, we can quite happily discuss and ponder these things, as we do on other threads on the forum. You seem to have taken on the role of 'chief shutter downer'. The subject is even a cover feature on the latest 'New Scientist' for goodness sake and you want to 'move on' and not talk about it.
Do you have a problem? I thought this thread was open to talking about things, unless I am completely mistaken.
Do you have a problem? I thought this thread was open to talking about things, unless I am completely mistaken.
Perhaps I have now. 😉
Please take into consideration that I have been a major contributor to the current topic of time, having made in excess of 10 posts on the subject.
I don't think that I, personally, have much more to offer regarding the nature of time, but everyone else is free to fill their boots!
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See, and I thought it was me, having made, well, go ahead and count how many posts in excess I've made.
these boots are made fer loadin! 😵
reminds me of that time on the old tobacco farm when the little tyke had to run out to the outhouse to well, unload so to speak and it being a cold night, decided to squat behind the house wearing her dad's tall rubbers. Well guess how dad found out in the morning! 😵
I know, same emoji but it's not redundant!
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See! Time is relative. 😂
It looks to me more and more that time is the causal consequence, not being put in the "base ether" class.
I would encourage you to look for how many incredible discoveries and advancements were made by quite ordinary, if not stupid, people. This group is quite safely above that. And so, don't underestimate that.
It looks to me more and more that time is the causal consequence, not being put in the "base ether" class.
I would encourage you to look for how many incredible discoveries and advancements were made by quite ordinary, if not stupid, people. This group is quite safely above that. And so, don't underestimate that.
Ah, your back! But not to the future.
At his age , Galu can only be thankful. 🙂
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