2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147710Short remarks on the problem of assigning frequency spectra to Casimir, sonoluminescence, Hawking, Unruh, and quantum optical squeezing effects are presented6 pages, LaTexGeneral Relativity and Quantum CosmologyQuantum PhysicsRemarks on the frequency spectra of some fundamental quantum effectstext