how to tell if a woman is a gold digger or a social climber?
This is an attempt to explain the effects of gravity. Gravity really is the single most important force in the Universe, indeed it may turn out to be the only force if the various forces (electromagnetic, nuclear etc.) can be unified. Spacetime is just the name we give to the four dimensions in which we live. Length, width, height and time. You need all four dimensions to locate any point in spacetime. Now without gravity spacetime would be flat. That means that if you set off at a fixed speed in a fixed direction, you'd keep going in a straight line. Because of gravity however, this is not what happens. If you set off at a fixed speed in a fixed direction you will be deflected by the gravity of nearby stars and planets. Both your speed and dierction will change because of this. In order to visualise spacetime under the influence of gravity, we imagine spacetime to be curved by the gravity of stars and planets. This is just a visual aid though, a way of explaining why gravity changes the speed and direction of moving objects. It is pretty much impossible to visualise spacetime because you can't see time, the fourth dimension. What is important to understand though is that gravity changes (warps, bends, etc.) the four dimensions we use to measure the Universe.
Dean Ambrose catches the audience's attention very easily because of his instability.
cut out some thin cardboard or if you have some, some thick paper. get the shape you need with that and then fill the glass with saran wrap.