Animals have evolved sensitivity to polarized light in the environment. Insects use the patterns of polarization from the sun to navigate, effectively using polarization as a compass.
Ralph Grimm Eye of a honeybee (Apis mellifera) 40X
Polarized Light Filter
Light responsive project with polarized filters first developed by Edward Land of Polaroid. The screens vary their optical density in accordance with position and light intensity to make a variable shade. The panels are driven by a linear actuator in response to changing light levels.
Research Team: D. Clifford, M. Christiano, J. Koon, K. Wu
Supported by a grant from the Green Building Alliance