Why the Universe's Age Is Wrong | Leonard Susskind

Описание: In this video, we explore a profound perspective on the universe inspired by the legendary theoretical physicist Leonard Susskind. We often treat the speed of light (300,000 km/s) as a cosmic speed limit—a number describing how fast a photon travels. But in the deepest structures of physics, the speed of light isn't about "speed" at all.

It is the fundamental geometry of reality. It is the conversion factor that weaves space and time into a single fabric called spacetime.

We dive into why light doesn't experience time, how moving through space is actually a "trade-off" with moving through time, and why even if light didn't exist, this universal constant would still govern everything from causality to the structure of atoms.

What We Discover:

Beyond Units: Why the numerical value of light speed is arbitrary and depends only on human-invented measurements.

The Spacetime Conversion: How the speed of light acts as the "exchange rate" between meters and seconds.

Causality’s Boundary: Why "c" is actually the speed of information and cause-and-effect, not just light.

The Geometry of Time Dilation: A visual way to understand why time slows down when you move—it’s pure geometry, not a mechanical glitch.

The Photon’s Perspective: Why, for a photon, the moment of emission and absorption are the exact same event.

Source Material: This video is based on a script adapted from the teachings and philosophical insights of Leonard Susskind, Director of the Stanford Institute for Theoretical Physics. It reflects his unique approach to explaining Special Relativity and the fundamental constants of nature.

If you’ve ever felt that the universe is more than just a collection of objects moving in a void, this exploration of spacetime geometry is for you.

#Physics #Spacetime #LeonardSusskind #Relativity #Science #QuantumPhysics #SpeedOfLight #Causality