Why does a hand held laser blinks when we move it on the wall ?

Subject: Why does a hand held laser blinks when we move it on the wall ?

Date: Wed Jan 10 16:40:29 2001
Posted by Miguel Clément
Grade level: undergrad School: University of Ottawa
City: Ottawa State/Province: Ontario Country: Canada
Area of science: Physics
ID: 979162829.Ph

Message:


Hi my name is Miguel and I was wondering why the laser that my teacher use 
for pointing on the blackboard flashes when he moves it allong the wall.

Thanks Miguel

Re: Why does a hand held laser blinks when we move it on the wall ?

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