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# Videos

# 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.

# Tattoos on Math

What’s the point of learning secant, cosecant, and cotangent, if they’re just the inverses of cosine, sine, and tangent? Do they have any purpose other than confusing students?

# Heisenberg’s Uncertainty Principle Explained

This quick video by Veritasium conceptually explains Heisenberg’s uncertainty principle and how it relates to the single-slit experiment.

# Why is glass transparent?

Also, why can’t you get a suntan through a window?

# Immovable Object vs. Unstoppable Force – Which Wins?

Or, “What happens when you interpret riddles literally?”.