What Gravity Actually Is | Full Lecture скачать в хорошем качестве

What Gravity Actually Is | Full Lecture

Drop something. It falls. Simple, right? Except what just happened isn't what you think. There was no force pulling it down. No invisible hand. No tug. What actually happened is far stranger — and far more beautiful. In this lecture, we explore what gravity actually is. Not Newton's version — a mysterious force acting across empty space — but Einstein's revelation: that gravity is the result of mass curving spacetime itself. Objects don't fall because something pulls them. They follow the natural curves of a warped universe. Topics covered: What Newton got right about gravity — and what he couldn't explain Einstein's general theory of relativity explained clearly What spacetime actually is and why it can curve Why falling and floating are physically identical Why astronauts on the ISS aren't weightless — they're falling How light bends around massive objects What black holes actually are (and what the event horizon means) Why time runs faster at your head than your feet How GPS relies on Einstein's relativity every single second Why gravity remains an unsolved mystery at the quantum level This is the fifth lecture in the Science Explained Properly series, where we explore how the universe actually works — no shortcuts, no oversimplification, just clear, thorough explanations presented at a university level. --- Presented by Dr. James Mitchell Previous Lectures: Why Stars Exist at All The Invisible Scaffolding of the Universe Why You've Never Actually Touched Anything Why Time Only Moves Forward Next Lecture: What Light Actually Is --- If you found this lecture valuable, consider subscribing for more long-form physics content. #physics #gravity #Einstein #generalrelativity #spacetime #science #education