Imagine a clock where the colors aren’t from LEDs but a physics phenomenon – polarization. That’s just what [Mosivers], a physicist and electronics enthusiast, has done with the Polarizer Clo… ...

The iDealSleep Sunrise Alarm Clock felt conspicuously cheap and dim, even before we assessed its light output with a light meter. The clock barely reached levels of around 100 lux during testing, ...

Encore: Perceiving without seeing: How light resets your internal clock Human bodies use light to help tune their body clocks, and that's true even for some blind people.

Light color is less important for the internal clock than originally thought Date: December 22, 2023 Source: University of Basel Summary: Light in the evening is thought to be bad for sleep.