In this episode we talk about dimensions and how we know that we live in 3D (or do we?).

Direct download: What_is_a_dimension.mp4
Category:science & medicine -- posted at: 10:00am EST

In this episode we take a break from physics and do a little fuzzy math. But not really: this is actually relevant to physics! Come back and I'll explain later.

Direct download: Adding_Past_Infinity_WARNING-_Math_Ahead.mp4
Category:science & medicine -- posted at: 10:00am EST

In this episode we explain what quantum tunneling is and how it works! To see quantum tunneling in action, watch http://bit.ly/pJhIdW and learn about the sun!

Direct download: What_is_Quantum_Tunneling.mp4
Category:science & medicine -- posted at: 10:00am EST

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