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physics.class-ph2023
Irreversibility of sudden processes: Compression versus expansion in perfect gases
Andrés Vallejo, Matías Osorio
We focus on the study of the processes undergone by a perfect gas when the external pressure is suddenly modified. The analysis shows that, from the second law perspective, there i…
physics.class-ph2023
Which is greater: or ? An unorthodox solution to a classic puzzle
Andrés Vallejo, Italo Bove
The question of the title is a famous puzzle in the field of recreational mathematics, and can be addressed by several approaches. A compilation of solutions, some of them very ing…