Tag Archives: total internal reflection

total internal reflection⤴

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Earlier this week, we used semi-circular perspex blocks to investigate total internal reflection. I’ve put together a short video showing total internal reflection in a semicircular block and a perspex model of an optical fibre. total internal reflection from mr mackenzie on Vimeo. There are some nice ray diagrams explaining total internal reflection on BBC … Read moretotal internal reflection

refraction, critical angle and total internal reflection⤴

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We met refraction during the National 5 course.  At Higher level, we are interested in the relationship between the angles of incidence (θi) and refraction (θr).   Snell’s law tells us that Usually material 1 is air, and so .  This simplifies Snell’s law to where n is the absolute refractive index of material 2.  Since … Read more