What causes objects to fall on earth? Why do the planets revolve around the sun? What holds galaxies together? If you travel to another planet, why change your weight? All these questions are related to one aspect of physics: gravity. Despite all his influence in our lives, all their control over the entire cosmos and our ability to describe and model its effects, understand the mechanisms of gravitational force. Of the four fundamental forces that physicists have identified - the strong nuclear, weak electrical, static electricity and gravity, the gravitational force is the least understood. Today, physicists aim to get to the "Grand Unified Theory", where all these forces are united in a physical model that describes the overall behavior in the universe. At this time, the gravitational force is the problem, force that resists the union.
0 comments:
Post a Comment