has done with the Polarizer Clock. It’s not a perfect build, but the concept is intriguing: using polarized light and stress-induced birefringence to generate colors without resorting to RGB LEDs.

scientists use birefringence measurements to get a better understanding of the areas where mechanical stress builds up in ...

Both pleochroism and birefringence can be studied using a motorized plane ... Motorized modulator disc, 2) Circular polarizer, 3) Motorized linear polarizer, 4) Motorized aperture diaphragm, 5) WL-LED ...