What Is Physics And What Are Its Uses? :: essays research papers

What Is physics and What Are Its Uses?Physics, a branch of science, is traditionally defined as the pick up ofmatter, susceptibility, and the relation between them. The interaction between matterand energy is ground everywhere. In order for matter to move, it requires someform of energy.Sports furnish umteen good examples of the relationship between matter andenergy. For instance, a pitcher requires energy to throw a base lump at theincredible speed and the true that is needed to keep the batter from using hisenergy to try and jar against the ball. The batter exhibits the need for a certaintrajectory because he/she take to hit the ball hard bountiful and keep it highenough to sail over the outfield wall. On the other hand, the batter must becertain to keep the trajectory low enough so that the ball will reach the fence.Trajectory is also seen in basketball, where players must inject the ball withenough arch to get over the front of the rim, and go through the hoop. Theener gy required to do this comes from not only the arms, alone the legs as well.The checkup field has seen enormous breakthroughs because of principlesof physics. Doctors atomic number 18 now sufficient to use lasers for surgery. Lasers are baseon the physical principle of light, and are devices for the creation andamplification of a narrow, intense beam of coherent light. pertly lasermicrosurgery can actually alter the shape of the cornea in the midsection so thepatients eyesight can return to normal, and he/she will no longer need thosebothersome glasses. Ultrasound is used in the medical field for destroyingvarious unwanted substances in the body such as kidney stones. Ultrasound usessound waves to dissolve these foreign bodies. If not for physics, ultrasoundswould never acquit been discovered and utilized. MRI scans, another newdiscovery, are able to show a complete three dimensional picture of theinterior expression of the body, and are extremely valuable in hospitals. The sescans are based on the principles of electromagnetism, and the phenomenon thatnuclei of some atoms line up in the presence of an electromagnetic field. understanding the dark matter of the universe, which has remained amystery for quite some time, is based primarily on theories of physics. We urinateyet to see a menacing hole, but physics has explained what one is, and why wecannot see it. Otherwise we would have never known that it is an extremely