Scientists in Japan make bright white without paint
Scientists in Japan have found a new way to make a very bright white. They do not use any paint or pigment.
Sunlight
Science
Grade 3
Sunlight travels in a straight line. You can see this when you bounce light off a mirror onto a target: the light goes straight to it. A mirror can change the direction of sunlight, and a magnifying glass can gather it. Where sunlight lands, the spot becomes brighter and warmer, and it becomes brighter and warmer still when you overlap the light from several mirrors or gather it with a lens. Changing the number of mirrors and measuring the temperature shows this clearly.