How to Measure the Width of a Hair With a Laser!

How to Measure the Width of a Hair With a Laser!

Frostbite Theater presents… Cold Cuts! No baloney! Just science! Hi! I’m Joanna! And I’m Steve! If you have a laser pointer, and you know how to use it safely, try this. Take a hair, perhaps from a coworker, and tape it in a cardboard frame. Place it a few meters away from the wall andRead More How to Measure the Width of a Hair With a Laser!