Light & Vision questions
40 fact-checked questions — tap any to predict the answer, then read why.
- Indigo jeans look blue. Which light is the dye mostly taking away?
- Why are blue-green or white night lights often worse for insects than redder light?
- Moths circling a lamp are not simply aiming at it. What flight reflex gets hijacked?
- Why does glass break light into colors?
- Why do we see darkness when eyes are closed?
- Why do sunsets appear red and orange?
- Why do objects have no color in dim light?
- Why do headlights look brighter at night?
- Why can't we see UV light?
- Why do stars look like different colors?
- Why do objects underwater look closer?
- Why do campfires appear orange/yellow?
- Why do fiber optic cables transmit light?
- Why do solar eclipses look dark?
- Why do we blink at sudden bright light?
- Why do some animals see better at night?
- Why do stars appear to have points?
- Why do glow-in-the-dark stickers glow?
- Why are shadows sharper in direct sunlight?
- How does red glass make objects look red?
- Why can't we see infrared light?
- Why do auroras appear in polar regions?
- Why do neon signs glow in colors?
- Why does laser light appear as a beam?
- Why do we perceive depth with two eyes?
- Why do things look darker with sunglasses?
- Why do diamonds sparkle so brightly?
- Why does the moon appear larger at horizon?
- Why do objects look blurry underwater?
- Why do we see afterimages?
- How do eyeglasses help you see clearly?
- Why can't we see in complete darkness?
- Why do prisms create rainbows?
- Why do magnifying glasses enlarge objects?
- Why do stars twinkle?
- Why do pupils dilate in darkness?
- Why do we see colors?
- Why does a straw look bent in water?
- Why do mirrors reflect images?
- Why do shadows exist?