Inventor and former Nasa engineer (and world’s coolest uncle) Mark Rober demonstrates how to build a giant glowing shadow wall in your house, then explains the science behind it.
Previously: Mark Build’s the World’s Largest Nerf Gun
Inventor and former Nasa engineer (and world’s coolest uncle) Mark Rober demonstrates how to build a giant glowing shadow wall in your house, then explains the science behind it.
Previously: Mark Build’s the World’s Largest Nerf Gun