The Biggest Ideas in the Universe | 6. Spacetime
409K views · Apr 28, 2020 · Science & Technology
Comments · 547
@steeneugenpoulsen8174 · 6 years ago
"You have a twin, two twins that's what makes them twins." - Sean Carrol 28 April 2020.
81
@andrewstoehr · 5 years ago
It is ridiculous how perfect this entire series is. Thank you for giving the masses enough credit to teach us spacetime from the top down.
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@platonicdescartes · 6 years ago
Even as someone who is educated on these subjects, I found this lecture very enjoyable and informative. You really have a gift for teaching.
91
@joshoowa · 4 years ago
You’ve improved my life immensely.
6
@amatore6 · 5 years ago
Autodidacts never had it so good.
4
@jojojorisjhjosef · 6 years ago
Can't get enough of these floating torso thumbnails.
12
@nicosvrin · 6 years ago
"Nearest star is 4 light years away" dear God, he's been inside so long he forgot about our 🌞.
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@breakitdown7359 · 6 years ago
I love Sean Carroll - he's one of those people who were just born to teach / impart knowledge.
15
@ankiesiii · 6 years ago (edited)
Good god, this is amazing Sean. Thanks for teaching a Texan with a ged about the true structure of spacetime.
35
@joelcurtis562 · 6 years ago
Awesome intro to SR. I personally think 'the best way' (if there is a single best way, which as Sean says there probably isn't) to teach SR is to emphasize the analogy between Euclidean rotations along the unit circle and Lorentz 'rotations' along the unit hyperbola. People have a strong intuition for rotations along a circle, which they can use as a nice bridge to the much less intuitive Lorentz transformations, because really it's the same basic idea: make a transformation that preserves a distance. I also like this approach because it makes it easy to do a 'symmetry-forward' intro to the subject, which lets beginners see the power of symmetry in a simpler context that will then become useful as they advance.
18
@moonled · 3 years ago
I love a line from Doctor Who: She has been everywhere in time and space,uncovered the secrets of countless worlds, yet she looks up and says "What a universe! I'll never understand it."
1
@paxanimi3896 · 6 years ago
Imagine Sean Carrol and Jim Al Khalili together in a scientific online school. The laymen applaud!
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