Sean Carroll
@seancarroll·255K subscribers·596 videos
The Biggest Ideas in the Universe | 1. Conservation
Posted
March 24, 2020
Views
367,930
Likes
10,261
Comments
687
Engagement
2.98%
March 24, 2020
367,930
10,261
687
2.98%
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28:17Now Playing[Correction: at 17:51 I say kinetic energy is a vector, I meant to say "scalar." Kinetic energy has a size, but doesn't point in a direction.]
The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody.
In this installment - the very first idea we cover! - I talk about "Conservation." The idea that a certain property, like momentum or energy or electric charge, stays the same over time. In my view, realizing that this is true - and the corollary, that the world naturally moves, rather than needing something external to keep it moving - represents the real transition between pre-modern and modern physics.
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#science #physics #ideas #universe #learning #cosmology #philosophy #math #conservation #momentum #energy #classicalmechanics
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