Total internal reflection could also be demonstrated by the teacher using a laser beam shining through these blocks, or even through a rectangular block of gelatine.

How to measure the critical angle experimentally Investigate experimentally the critical angle and the conditions under which total internal reflection occurs within a semi-circular glass block.

Total internal reflection–fluorescence correlation spectroscopy (TIR-FCS) is an emerging technique that is used to measure events at or near an interface, including local fluorophore ...

The body hairs of the Saharan silver ant cause total internal reflection of light to make the ants almost ten times more reflective, preventing overheating and yielding their silver sheen ...