#blurmaxxing

Viktor explains light, the clock in your eye, and why the lens colour follows the time of day.

  1. You have a third type of eye cell. It can't see. It's a clock.

    It reacts to blue light and tells your brain what time of day it is.

    Your eye's third cell type: why does blue light set your body clock?

  2. NASA changed the lights on the space station because astronauts couldn't sleep.

    The new lights can shift colour through the day. Warmer at night.

    Why did NASA change the lights on the space station?

  3. For hundreds of thousands of years, the only light after sunset was fire. Fire is orange.

    That's where the orange lens comes from.

    Firelight is orange: what does humanity's evening light say about your lamps today?

  4. The first sunglasses weren't for the sun. They were for a poker face.

    The smoky quartz judges story has no known source. The oldest are Inuit snow goggles, and they were for the sun.

    Were the first sunglasses made to hide your eyes, not to block the sun?

  5. Your phone already turns orange at night. There's a reason.

    Night Shift only changes the colour of one screen, not its brightness. The lens sits in front of the eye and filters everything you look at.

    Why does your phone turn orange at night, and is Night Shift enough?