How To Count Past Infinity

This video from Vsauce discusses cardinal numbers, the cardinality of the natural numbers (aleph null), ordinal numbers, and all sorts of infinities.

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How To Count Past Infinity

Journey to the Center of the Earth

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“Journey to the Center of the Earth” is a curated collection of articles published by the Smithsonian magazine. As you scroll down the page, you move deeper into the Earth — a thermometer and a depth gauge keep track of how far down the page you’ve scrolled. At each division (surface, crust, mantle, outer core, inner core), you’re given a selection of pieces about that layer as well as quick facts about the materials and physics which can be found at that depth.

It’s a lot to take in, but it’s very interesting!

Journey to the Center of the Earth