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I recently purchased a small LED flashlight/laser pointer.?
I noticed something about the laser pointer that i had not noticed about laser pointers before. When you use it, the dot that it makes has a sparkly visual effect on everything it is on. What is this, and what causes it? Thanks.
2 Answers
- JayLv 51 decade agoFavorite Answer
It's probally interference patterns. Light travels in waves and the crests and troughs can cancel one another out causing patterns like those you describe.
- Anonymous1 decade ago
dust in the air
