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Do you believe that energy is conserved?  https://www.youtube.com/watch?v=lcjdw...   #generalrelativity   #noether 

Want to see how animations like these were made? Head over to Patreon for exclusive BTS footage -  https://www.patreon.com/c/veritasium 

For those of you watched our recent video 'The Man Who Almost Broke Math (And Himself...)',   https://www.youtube.com/watch?v=_cr46... , you will have noticed that it was animation heavy.

Therefore, The Veritasium Historical Animation Team have shared how they make these animations in a video exclusive to Patreon. 

Sign up and pledge support today in order to watch it! 

Quiz time!

How well do you know The Axiom of Choice?  https://beta.retainit.app/game/veritasium-axiom-of-choice  

For those of you watched our recent video 'The Man Who Almost Broke Math (And Himself...)' here is a quiz designed to test your knowledge (and if you need a quick refresh, here is a link to the video:  https://www.youtube.com/watch?v=_cr46... ) 

Let us know what score you get in the comments! 

Least Action Q&A With Casper And Derek: Sign up to watch free on Patreon -  https://www.patreon.com/c/veritasium 

The Q&A is based on the following two videos so make sure you watch them first:
-  https://www.youtube.com/watch?v=Q10_s... 
-  https://www.youtube.com/watch?v=qJZ1E... 

We had so many insightful and intriguing questions it was hard to choose what to include.

There are two subsections in this video, the first part focuses on least action in general and the second on the demonstration that Casper showed us.

Thank you so much for all your questions and engagement, it was a pleasure to read through them and we hope you enjoy this video. 

Quiz time! 

How well do you know quantum mechanics?  https://beta.retainit.app/game/67d1a0b0fbe3802a1d0e1396 

For those of you watched our recent video Something Strange Happens When You Trust Quantum Mechanics here is a quiz designed to test your knowledge (and if you need a quick refresh, here is a link to the video:  https://www.youtube.com/watch?v=qJZ1E... ) 

Let us know what score you get in the comments! 

COLLABORATION ALERT! 

Check out our latest video, about NASA's Ingenuity Helicopter,  https://www.youtube.com/watch?v=20vUN...  

Featuring our friend Alex McColgan from  ‪@astrumspace‬ ! 

Similarly, Derek has featured on their recent video all about the plausibility of colonising Mars. You can find the video here -  https://www.youtube.com/watch?v=b7mjp... 

There's still time to submit your questions to Derek and Casper!

We will be doing a Q&A video about the Principle of Least Action, exclusive to Patreon. 

Submit any questions about our first or second video on this topic by heading over to our Patreon and creating a free account to fill out the form:

 https://ve42.co/PatreonLA2 

What's the worst interview question you've ever been asked?  https://www.youtube.com/watch?v=dFVrn...  

This question is inspired by our most recent video, in which discuss solutions to a famous Google interview question and the science behind them. 

What should you use to get super glue off your skin?

 https://www.youtube.com/watch?v=Ni82f... 

Which was your favourite mini robot?  https://www.youtube.com/watch?v=H6q6p...