How do optical smoke alarms work?
It's for some important homework for school and I've looked on the internet at about 10 different websites but nothing goes into enough detail. I know the rough concept of how it works and how a beam of light hits a detector but when a large amount of smoke rises up it scatters the light and a decrease in light is detected and sets off an alarm but please correct me if I'm wrong.
- Anonymous1 decade agoFavorite Answer
I think this is a good site: