Photoelasticity - Spiked castor cup
2017-03-12
- Classification
- Photograph
- Museum
- Wikimedia Commons
- Rights
- CC BY-SA 4.0, as the museum states it.
- Who can see it
- Kids profiles and older: it shows nature, places, still life or a children's book. How works are placed
About this work
A spiked castor cup made of clear hard plastic, placed onto a mirror. The plastic is birefringent and demonstrates internal stress as coloured patterns (photoelasticity) when photographed using cross polarisation.