# Brilliant-cut diamonds and other tricks of the light

- Institution: Gresham College
- Speaker: Professor John D Barrow FRS
- Year: 2009
- Level: For everyone
- Language: English
- Subjects: Mathematics
- Source: [Gresham College](https://www.gresham.ac.uk/watch-now/brilliant-cut-diamonds-and-other-tricks-light)
- Licence: [Educational use (Gresham College's terms)](https://www.gresham.ac.uk/terms-and-conditions)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Simple mathematics revealed how to cut diamonds so as to create the most brilliant effect through the refraction, reflection and dispersion of light. We look also at some of the unusual effects of reflection and refraction that have been used to create illusions, and reveal why your right hand becomes your left hand when seen in the mirror but your face is not turned upside down.

## Lectures

1. [Brilliant-cut diamonds and other tricks of the light](https://invisiblenetwork.ai/learn/gresham/brilliant-cut-diamonds-and-other-tricks-light/e0a4fbe51c5e) (YouTube)