Learn the fundamentals of physics with this clear explanation of Newton’s Laws and the momentum principle! This video breaks down concepts like force, motion, and momentum with easy-to-understand ...

Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...