Ultraviolet and Infrared Light Blocked by Glass? Verifying through Simple Experiments
- Autores: Yi Jinn Lillian Chen, Jeng Fung Hung, Tzu Chun Chen, Jiann Shing Lih, Shuo Hong Wang, Jing Yuan Ko
- Localización: The Physics Teacher, ISSN 0031-921X, Vol. 62, Nº. 4, 2024, págs. 299-301
- Idioma: inglés
- Enlaces
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Resumen
A diagram from Conceptual Physics showed that invisible light [ultraviolet (UV) and infrared (IR) light] cannot pass through the transparent glass.1 When they saw the diagram during physics class, students asked whether invisible light is blocked by glass. Relatedly, a physics teacher’s study found that students had misconceptions about invisible light.2 Therefore, we designed experiments to see whether UV and IR light are transmitted through glass. The experiments showed interesting results:
UV sensor cards and transparent glass (as used in windows) were used for UV transmission tests. A change in the color of a UV sensor card showed that UV light from the Sun was transmitted through glass.
A smartphone camera was used to detect the IR light emitted by a TV remote control. Infrared light could be detected by the smartphone camera when a water glass was placed between the IR-emitting remote control and the camera....
