However, weight is the force of gravity acting from the middle of the object straight down. And finally, the equation to find out an object's weight is mass multiplied by gravitational field ...

Several physicists have proposed theories that try to unite quantum mechanics with Einstein’s general theory of relativity.

Pressure can be calculated using the equation pressure = force ÷ area ... Mass is a measure of how much matter there is. Gravitational force is the pull of the Earth's gravity on that mass.

All black holes have the same force constant F inflating ... see figure 2. This equation is a contradiction, because the scalar curvature is a gravitational invariant on the left-hand side ...