Laser Pointer for Teachers: Best Features for Presentations I taught for years before I finally ditched the clunky yardstick and the $5 office-store r
Tag: laser pointer
Green Laser Pointer vs Red: Which Color Is Better for Astronomy?
Green Laser Pointer vs Red: Which Color Is Better for Astronomy? I remember the first time I traced Orion's belt with a green laser at a dark-sky site
Laser Pointer for Astronomy: A Star-Pointing Guide for Beginners
There's a moment that hooks a lot of people on astronomy, and it rarely happens through a telescope eyepiece. It happens at a dark site, when someone pulls out a...