Science Buddies: "Ask an Expert"

Hi

In case I point a laser beam on someone in my class,which laser is safe?

Can I use a laser to point to a particular distance? lets say, 6 feet when the object is 9 feet away?

Pls specify.

Hi,

See: https://www.lia.org/subscriptions/safet ... nformation for example.

In short, make sure your laser pointer is a class II or below.