Some metals make a glowing, sparkling effect when you rub them because they give off tiny flashes of light, like little fireworks! Imagine rubbing a piece of metal and seeing it light up with tiny sparks. It's kind of like how friction can start a fire if you rub two sticks together fast enough.
Examples
- Rubbing a piece of zinc on your sleeve gives off tiny glowing sparks, like magic confetti.
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See also
- What are light waves?
- How do mirrors use specular reflection?
- What Causes the ‘Glow’ of a Neon Sign?
- What are pink or red skies?
- What is Laser beam?