We always wondered about that. Because if a black hole could fit in a nutshell, would you want to keep it in your pocket? Could be handy we think.
Good learning videos from a good source. This is the sort of thing that Patreon was designed to support. Give their campaign a look. You might find one of the perks there that amuses you as much as this fun video.
This article sponsored by Schoolhouse Earth, a foundation committed to providing learning experiences where ever we find a gap. Schoolhouse Earth regularly contributes to See It Online with topics that address learning and online education.