One Force Stretches Everything—From Your Body to Moons

Gravity follows an inverse-square law—twice the distance means one-quarter the force. But across any object with physical size, different parts sit at different distances from the gravitational source. That means different parts feel different forces. This difference is called a tidal force, and it stretches you along the line connecting you to the mass while compressing you perpendicular to it. Near Earth, it's barely noticeable—just enough to raise ocean tides. Near a black hole, it pulls you into a kilometers-long stream of atoms. Near Jupiter, it heats moons from within. One principle—gravity's gradient across extended objects—explains black holes, planetary rings, volcanic moons, and the tides you see every day. Everything that follows in physics comes from this single idea.

Видео One Force Stretches Everything—From Your Body to Moons канала Universe Unlocked