5min chapter

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas cover image

AMA | July 2022

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

CHAPTER

The Action Principle for Curving Space Time

The action principle says that in ordinary classical mechanics, if you have some trajectory, for a ball rolling down a hill or a planet going around the sun, it has a quantity we can define called the action. The action is kinetic energy minus potential energy. So i don't think everything i just said there is true, unless i made a mistake, which is always possible. Richard graft: I'm 62 and aware of the valuable perspective that comes with those and later years. However, i've come to believe that our nation would benefit from an upper limit before 60 on the supreme court. What are your thoughts on this idea?

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