Physics World

AUGUST 6, 2021

But to explain what we actually see happening amid all the teeming particles, we are better served by the subject of Sen’s book: thermodynamics , in all its guises. First, energy is conserved in the universe; second, in all that comes to pass, some energy is unavoidably dissipated into a form that cannot be used to do work.

Law 145

Law Conservation Radiation Technology 145

Physics World

APRIL 4, 2022

Confronting the second law. All laws of physics are invariant with respect to forward or backward flow of time, or the choice of the origin of time for a given equation. The only exception is the second law of thermodynamics, which establishes the concept of entropy.

Law 144

Law 2012 2006 2014 144

Physics World

SEPTEMBER 16, 2021

It was a bold claim and some researchers initially struggled to accept the implications because it meant that energy must be flowing from the “cool” 6000 K surface of the Sun into the hotter corona – seemingly in violation of thermodynamics. Unfortunately, nothing definite has so far appeared.

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Electricity 2010 2005 Radiation 143

Physics World

DECEMBER 1, 2021

In so doing, the system breaks a well-known physical symmetry: as far as the fundamental laws of physics are concerned, no point in space should have priority over any other. This cosmic apathy is reflected in a set of symmetries, or transformations, under which these laws must remain invariant. Time crystals enter the fray.

Law 28

Law 2012 2014 2015 28