Free YouTube views likes and subscribers? Easily!
Get Free YouTube Subscribers, Views and Likes

The Bear Grylls trick to find North

Follow
Deeper Science

In this video, I explain the physics behind the Bear Grylls trick to find North using the shadow of a stick.

The image at the end is taken from Vincent, J. "The mathematics of sundials", Australian Senior Mathematics Journal 22 (1)

posted by difusionurbaat