cloud
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3:59The Lava Lamps That Help Keep The Internet Secure
4.3M views • 9 years ago
Tom Scott
Tom Scott visits Cloudflare's San Francisco office to show the wall of lava lamps whose camera feed is used as a source of entropy for random number generation. It is a short explainer on how this helps secure internet encryption.
3:12Why is the Solar System Flat?
9.5M views • 12 years ago
minutephysics
A minutephysics explainer on why the planets orbit in a flat plane. It shows how conserved angular momentum flattens a collapsing cloud of matter into a disk.