David ROWLAND. How Far Light Travels before Dropping Below the Visible Frequency Range. New Frontiers in Physical Science Research Vol. 6, [S. l.], p. 35–40, 2023. DOI: 10.9734/bpi/nfpsr/v6/5052A. Disponível em: https://stm.bookpi.org/NFPSR-V6/article/view/9209. Acesso em: 9 jun. 2026.