For anyone looking for other cool ideas or videos about speed of light etc

What Is The Speed of Dark? - Vsauce (13m:31s)

• Cool older vsauce video going over shadows and light speed etc

The Faster-Than-Light Guillotine - Because Science (w/ Kyle Hill) (14m:19s)

• Basically goes over the “FTL Scissor action” that a lot of people have covered but he does a good segment covering it.