Science and technology has provided us numerous miraculous
discoveries and devices. Lasers are is most modern achievements. Lasers are
discoveries as the devices which produce pure and intense beams of light or
radiation. They were invited in 1960. At the time of invention, nobody knew
what to do with them, but nowadays they are widely used in many sectors
tremendously.
Lasers are widely used in the field of industry. They are
used in cutting clothes, piercing leather and even substances like diamond and metals,
and cutting bricks and granite. Similarly, they are also used in welding, they
can also be used in transport and communication; for example, they are used
instead of cables in telecommunication, and they are used in flight
simultaneous to train pilots. Thus laser are enormously used in the field of
industry, transport and communication.
In the field of medicine, lasers have made a revolution.
Lasers are used to destroy the single cell of living tissues in the treatment
of cancer. Doctors have been using lasers instead of surgical knives in major operations.
Similarly, skin blemishes can be removed by the help of lasers. Lasers can help
us in pollution control. They are useful for measuring the size of pollutant
particulars in the air. They can possible be used to clear up oil slices on the
surface of the seas. They can also be used for measuring the distance between
two objects, such as between the moon and the earth. Thus they are used in the
field of medicine, pollution control and measurement. Because of the advantages
mentioned above, lasers are completely beneficial.
Unfortunately, lasers can be used as the means of war. It is
the misuse of them. They can be mercilessly used to kill human beings; that’s
why they are also called death rays. In the war, they are used in guiding
missiles and finding range for gunners. It is the exploitation of lasers, and
in the sense, they invite demerit and ruins.
Although lasers can have both advantage and disadvantages,
they are miraculous achievements of science and technology. If they are
properly used for the construction of human civilization they cannot invite any
fatal disasters; but if they are misused, they certainly lead us to failures
and destruction. It is wise of human beings not to invite any collision
courses of human civilization.
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