What is Energy? | Space Time
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What is Energy? | Space Time

This episode is supported by The Great Courses Plus. A physicist sees a guy standing on the edge of a rooftop and shouts, don’t do it. You have so much potential. We all know what it feels like to be energetic to have energy it’s this something that allows us to move, be active, get […]

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14. Introduction to the Four-Vector
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14. Introduction to the Four-Vector

Professor Ramamurti Shankar: Let me remind you that everything I did so far in class came from analyzing the Lorentz transformations. And you guys should be really on top of those two marvelous equations, because all the stuff we are doing is a consequence of that. I won’t go over how we derive them, because […]

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15. Four-Vector in Relativity
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15. Four-Vector in Relativity

This is the last and final chapter of this subject, and I think it’s, again–we’re starting by backing off a little bit towards the end of last class. I think that there are maybe parts of it were maybe difficult for you to follow. Let me remind you of what we were trying to do. […]

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8. Dynamics of Multiple-Body System and Law of
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8. Dynamics of Multiple-Body System and Law of

Professor Ramamurti Shankar: So, today we are going to do something different from what’s happened so far, in that we are going to study the dynamics of more than one body. Well, you might say “Look, we already did this last week, when I studied the Solar System,” where there are planets moving around the […]

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