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What Is Physics And What Are Its Uses? - Online Essays

What Is Physics And What Are Its Uses?

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Physics, a branch of science, is traditionally defined as the study of
matter, energy, and the relation between them. The interaction between matter
and energy is found everywhere. In order for matter to move, it requires some
form of energy.
Sports show many good examples of the relationship between matter and
energy. For instance, a pitcher requires energy to throw a baseball at the
incredible speed and accuracy that is needed to keep the batter from using his
energy to try and hit the ball. The batter exhibits the need for a certain
trajectory because he/she needs to hit the ball hard enough and keep it high
enough to sail over the outfield wall. On the other hand, the batter must ...

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and are devices for the creation and
amplification of a narrow, intense beam of coherent light. New laser
microsurgery can actually alter the shape of the cornea in the eye so the
patient's eyesight can return to normal, and he/she will no longer need those
bothersome glasses. Ultrasound is used in the medical field for destroying
various unwanted substances in the body such as kidney stones. Ultrasound uses
sound waves to dissolve these foreign bodies. If not for physics, ultrasounds
would never have been discovered and utilized. MRI scans, another new
discovery, are able to show a complete three dimensional picture of the
interior structure of the body, and are extremely valuable in hospitals. These
scans are based on the principles of electromagnetism, and the phenomenon that
nuclei of some atoms line up in the presence of an electromagnetic field.
Understanding the dark matter of the universe, which has remained a
mystery for quite some time, is based primarily ...

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What Is Physics And What Are Its Uses?. (2005, February 21). Retrieved January 7, 2026, from http://www.essayworld.com/essays/What-Is-Physics-What-Its-Uses/22596

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PAPER DETAILS

Added: 2/21/2005 12:22:04 AM
Category: Science & Nature
Type: Premium Paper
Words: 504
Pages: 2

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