j_bertolotti<p><a href="https://mathstodon.xyz/tags/PhysicsJournalClub" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PhysicsJournalClub</span></a> <br>"Temperature as joules per bit"<br>by C.A. Bédard, S. Berthelette, X. Coiteux-Roy, and S. Wolf</p><p>Am. J. Phys. 93, 390 (2025)<br><a href="https://doi.org/10.1119/5.0198820" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">doi.org/10.1119/5.0198820</span><span class="invisible"></span></a></p><p>Entropy is an important but largely misunderstood quantity. A lot of this confusion arise from its original formulation within the framework of Thermodynamics. Looking at it from a microscopic point of view (i.e. approaching it as a Statistical Mechanics problem) makes it a lot more digestible, but its ties to Thermodynamics still creates a lot of unnecessary complications.<br>In this paper the authors suggest that by removing the forced connection between entropy and the Kelvin temperature scale, one can rethink entropy purely in terms of information capacity of a Physical system, which takes away a lot of the difficulties usually plaguing the understanding of what entropy is actually about.<br>I don't think the SI will ever consider their suggestion to remove Kelvins as a fundamental unit and include bits, but this paper will be a great boon to any student banging their head against the idea of entropy for the first (or second, or third) time.</p><p><a href="https://mathstodon.xyz/tags/Physics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Physics</span></a> <a href="https://mathstodon.xyz/tags/Entropy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Entropy</span></a> <a href="https://mathstodon.xyz/tags/Thermodynamics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Thermodynamics</span></a> <a href="https://mathstodon.xyz/tags/StatisticalMechanics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>StatisticalMechanics</span></a></p>