Part 4/10:
Gravity's behavior can be understood through the inverse square law, which states that the strength of the gravitational force decreases with the square of the distance between two masses. This principle leads to a visualization of gravitational force represented as vectors, or "arrows," radiating from the mass.
When we think about gravity's propagation in relation to dimensions, intriguing possibilities arise. In a hypothetical 2-dimensional universe, gravity would diminish at a different rate (inversely proportional to the radius) compared to our 3D reality, which follows the inverse square law. Extending this thought, if our universe has more than three spatial dimensions—specifically, four—the law would change to an inverse cube relationship, offering a faster gravitational drop-off.