Sensitivity of Gelatine 
Photoelastic stress analysis techniques show how even the lightest touch can have an huge impact on the structure of this highly sensitive bi-refringent media.  Bi-refringence is the phenomenon whereby a media refracts light in two different directions.
…and the colours are just so pretty!

Sensitivity of Gelatine 

Photoelastic stress analysis techniques show how even the lightest touch can have an huge impact on the structure of this highly sensitive bi-refringent media.  Bi-refringence is the phenomenon whereby a media refracts light in two different directions.

…and the colours are just so pretty!