The Most Reflective Mirror In The World

Arrggghhh, Action Lab again.

I want to hunt down some of those dialectric mirrors. Their non-isotropic reflective materials sound pretty cool.

I am amazed that there is no metal in the material. It's just made of transparent polymer layers in alternating materials with different indices of refraction.

How Does Optical Fibre Work

Silly British professor spelled fiber wrong.

Total internal reflection seems a simple enough concept, but to envision is causing the light signal to bounce down and down and down a flexible, glass rod effectively into infinity is a little harder to imagine. Here a British professor explains the concept of total internal reflection as it works along an optical fiber (or fibre for the Brits).