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Can you explain this in layman's terms?
An experiment to teach kids why hand washing gets rid of germs is using either water or milk, glitter, and soap or hand sanitizer. When you touch the glitter in milk or water, the glitter spreads. So it simulates soap or sanitizer makes germs go away.
My question is whether this experiment would work if you were to use an industrial UV light, like what hospitals and others use to kill germs. FYI, I'm not remotely saying this will be done. But I'm curious whether you could visually show the same thing with shining an industrial UV light over the glitter.
Thanks!
FYI, without soap or sanitizer, the glitter floating in the water or milk will not scatter. And with soap or sanitizer, it only works one time.
3 Answers
- GA41Lv 72 months ago
Glitter is sprinkled onto the surface of a glass of milk (or water). When you touch your finger to the surface of the milk, the glitter will spread away from your finger. This is similar to the way germs spread away from a soap or sanitizer. The purpose of doing this activity with your finger in milk, is to demonstrate how soap or sanitizers affects germs.
The question is whether ultraviolet light would have the same effect on the glitter. Ultraviolet light is used in hospitals to kill germs.
I do not believe you will have the same effect with ultraviolet light. The finger touching the milk affect the surface tension of the liquid which causes the glitter to disperse. Ultraviolet light would not affect the surface tension of the liquid.
