my favorite analogy for this is:
if you stretch out a sheet of cloth, so it's toally flat, that represents space time.
take a marble, or a pool ball (representing a celestial object) and place it on the sheet. the sheet will "bend" or "curve" around the ball. the "curving" you see in an example of how the "curving" of space time happens in our universe.
2007-05-17 08:17:48
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answer #1
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answered by Taylor M 2
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Gravity is a stress of charm that acts between bodies that have mass. that's a actual phenomenon of necessary magnitude, profoundly affecting the workings of the worldwide around us and the universe previous. maximum familiarly, that's the gravitational charm of the earth that endows products with weight and motives them to fall to the floor whilst dropped. in fact, gravity is likewise the reason of the very existence of the earth, the sunlight and different celestial bodies; with out it count does no longer have coalesced into those bodies and existence as all of us comprehend it does no longer exist. Gravity is likewise to blame for retaining the earth and the different planets of their orbits around the sunlight, the moon in its orbit around the earth, for the tides, and for various different organic phenomena that we observe. In trouble-loose utilization "gravity" and "gravitation" are the two used interchangeably, or the excellence is on occasion made that "gravity" is especially the attractive stress of the earth, mutually as "gravitation" is the final assets of mutual charm between bodies of count. In technical utilization, "gravitation" is the tendency of bodies to strengthen up in direction of one yet another, and "gravity" is the stress that some theories use to describe this acceleration. Gravity became into particularly poorly understood till Isaac Newton formulated his regulation of gravitation interior the seventeenth century. Newton's theory continues to be extensively used for many functional purposes, however for extra superior artwork that's been supplanted by way of Einstein's time-honored relativity. mutually as very much is now trouble-loose with regard to the homes of gravity, the wonderful rationalization for the gravitational stress continues to be an open question and gravity continues to be an significant subject count of medical study.
2017-01-10 04:37:19
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answer #2
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answered by Anonymous
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