Uploaded July 2019 | Updated September 2026, 3 days ago

---

Another demonstration of Snell's law, this time using a rectangular block. The method demonstrated is the one required by various examinations boards including Edexcel, for their IGCSE Physics qualification.
For an alternative version of this experiment (using semi circular blocks) click on the link below.
youtube.com/watch?v=yfawFJCRDSE&t=4s