No Need for “Force” of Gravity!
Newton’s Theory: Force determines motion. For example, the gravitational attraction between the Sun and a planet determines the curved orbit of the planet about the Sun.
Einstein: No need for gravitational “force”! Motion is as if objects are in accelerating space-time.
But what does this mean?
- Curved Space-Time coupled to mass!
- “Matter tells space how to curve and space tells matter how to move”. All is geometry!
- Leads to Black holes , . . .
- More about this next time