I have an animal within who can see at night. And so do you. Humans have a setting on our eyes we use but rarely pay attention to: night vision.
This winter, I set out to create another optical effect: a lit candle that brightens as the eyes adjust to the dark. The effect– a demonstration comparing our two types of vision rather than a true illusion–works because our night vision sees color differently, allowing a camouflaged flame to emerge Continue reading