Recent content by Matthew Marko

My apologies for the delay, oddly I didn't get the alert. I am the author, and the paper has passed peer review. Surprisingly with two reviewers post said publish as is (beyond some figure recommendations). It is an accepted and published paper. I would be interested in discussing further...

This article isn't the first, in New Journal of Physics in 2018, it was proposed it is possible to exceed the Carnot efficiency at the quantum level: https://doi.org/10.1088/1367-2630/aa8ced Both Scientific Reports and NJOP are legitimate journals. Again, nobody could argue that the second law...

I do not see a typo in the title. The paper discusses Carnot's theorem, and compares the traditional way of calculating internal energy of a non-ideal gas (eq 7 in the manuscript) to the empirical equation (eq 3 and 4) that if accurate will allow for a heat engine to exceed the Carnot...

https://www.nature.com/articles/s41598-022-11093-z In this new 2 May 2022 publication, an experimental effort was made to measure directly the internal energy changes of non-ideal CO2, from the decrease in temperature as the liquid-gas expanded from one cylinder into two. With the empirical...

Thank you, I understand your answer with regard to the equation for dU under discussion. Looking at the derivation for the kinetic energy: http://dev.physicslab.org/Document.aspx?doctype=3&filename=IdealGases_KineticTheory.xml it is clear that P = (2/3)*(N_particles / V)*(KE_particle)...

Andrew, I appreciate the answer, but then the question is, if I am trying to predict the internal energy of a real monatomic gas, what equation should I use? The value of P would obviously be affected by the intermolecular attractive and repulsive forces, resulting in a lower pressure for a...

I am looking over the kinetic theory of gases. It is most commonly described as U = (3/2)*N*k*T = (3/2)*mass*R*T for a monatomic gas, assuming the gas is ideal. This is based on the derivation, where ultimately (3/2)*P*V = N*K = total kinetic energy of particles. My question, for a real gas...