Questions tagged [laws-of-physics]

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Why are most physical laws dependent on small powers?

The equation with the highest exponent I could find was the coefficient of energy loss of light scattered in an optical fiber: $$ {\displaystyle \alpha _{\text{scat}}={\frac {8\pi ^{3}}{3\lambda ^{4}}}...
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56 views

Could some kind of vacuum decay modify the most fundamental laws of physics?

A false vacuum is a hypothetical vacuum that is not actively decaying, but somewhat yet not entirely stable ("metastable"). It may last for a very long time in that state, and might ...
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182 views

Physical and non-physical solutions to Einstein's field equations

Einstein predicted gravitational waves in 1916 as a solution to his field equations. Apart from doing experiments, is it possible to tell which solutions exist in the real world and which don't? Are ...
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92 views

Locus of a moving mass point

Two very small mass particles $m_1$, $m_2$ are connected by a $2l$ long, infinitely soft and inelastic thread without mass. The initial condition of the system before being freely released is as in ...
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49 views

What physical laws differs in non inertial frame

For me physical laws should be observers independent, what should be depend on the observers are measurements. But one of the postulates of Special relativity is that all laws of physics should be ...
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1answer
77 views

How are proportional relations derived in physics?

I would like to ask a simple question :How are proportional relationships in physics found? To be more specific, let's consider a simple law, Ohm's law, which states $\Delta V\propto I$. Now, it ...
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945 views

Justification of the State Postulate

I have just started thermodynamics (not with statistical approach but with macroscopic approach), in which the state postulate reads Only two independent intensive properties of a simple ...
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11 views

wondering light polarization, enjoying three dimensional cinema

I am very fascinated by physics, but I'm not much into it beacuse I studied it as an amateur many years ago. I'm trying to understand things about optics and polarization of light, and in particular ...
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20 views

Is there any inflationary model or any string theory model that does not assume any symmetries as fundamental?

If I understand them right, in usual chaotic inflationary models or in string theory some symmetries are assumed as fundamental and therefore some fundamental laws of physics are assumed. But, in some ...
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Are the different fields in multi-field inflation described by different Lagrangians?

The most simple models of cosmological inflation consider only one scalar field. However, there are more complex models (like hybrid inflation or multi-field inflation) which consider more than one ...
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19 views

Church–Turing–Deutsch principle

In what sense from the  Church–Turing–Deutsch follows that it is possible to simulate with one physical system all the other physical systems? I know that we can build logic circuits with a Toffoli ...
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1answer
26 views

Binnig's fractal evolution applied to multiple universes?

Gerd Binnig, Nobel laureate in physics in 1986, proposed in his article "The fractal structure of evolution" 1 that everything in the universe, including its laws, had changed and became ...
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30 views

Unification of Forces

I was reading that unification of Forces is the most important task in the entirety of Physics. My question is why do the forces have to Unified. Why can't they be different forces what makes us think ...
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1answer
92 views

Are there other theories (apart from string theory) that combined with inflation, would produce universes with different laws?

In chaotic inflation, space would stop expanding in some points, creating hubble volumes that could experience different spontaneous symmetry breaking, which would result in different properties, such ...
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Would any continuous model of the universe have/be based on hypercomputational laws?

I've read that when Turing-Church thesis is applied to the universe and physics, one of the three interpretations that we can use and is defended by some important physicists is that: "The universe ...