I’m curious whether any serious frameworks in modern physics (for example in quantum mechanics, retrocausality, or time-symmetric formulations) allow effects that appear to propagate backward in time, while still remaining mathematically and experimentally consistent.
I’m curious whether any serious frameworks in modern physics (for example in quantum mechanics, retrocausality, or time-symmetric formulations) allow effects that appear to propagate backward in time, while still remaining mathematically and experimentally consistent.
From what I understand, the First Law (energy conservation) is essentially exact, while the Second Law is more statistical — entropy *can* decrease, it's just extremely unlikely at large scales.
So are there any known or hypothetical physical scenarios where energy is fully conserved but entropy still decreases? Even microscopic or thought-experiment cases count. I'm not talking about perpetual motion or anything like that — just curious about where the two laws actually come apart.
I’ve been thinking about the fundamental differences between the First and Second Laws of Thermodynamics. While the First Law (Conservation of Energy) seems to be a hard constraint based on time-translation symmetry, the Second Law is often described as statistical or probabilistic in nature.
I’m curious if there are any recognized processes—either observed at the microscopic scale or proposed in thought experiments—where energy is perfectly conserved , yet the total entropy of the system (or the universe) decreases.
I’ve been thinking about the fundamental differences between the First and Second Laws of Thermodynamics. While the First Law (Conservation of Energy) seems to be a hard constraint based on time-translation symmetry, the Second Law is often described as statistical or probabilistic in nature.
I’m curious if there are any recognized processes—either observed at the microscopic scale or proposed in thought experiments—where energy is perfectly conserved , yet the total entropy of the system (or the universe) decreases.
I would like to know how the physicists here formally describe the structure of time. I only have below moderate physics knowledge but I'm so fascinated about the nature of time. I have read that theres no consensus among scientists about this yet. I would like to know what's your take on this. Thanks!
I would like to know how the physicists here formally describe the structure of time. I only have below moderate physics knowledge but I'm so fascinated about the nature of time. I have read that theres no consensus among scientists about this yet. I would like to know what's your take on this. Thanks!