The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom
Science and technology has provided us numerous miraculous discoveries 
and devices. Lasers are its most modern achievements. Lasers are defined as the devices which produce pure and intense beams of light or radiation. They were invented in 1960. At the time of invention ,nobody knew what to do with them but today they are widely used in many sectors tremendously. Especially in the field of industry they are used for cutting clothes,piercing leather and even hard substances like diamond and metals also are used for cutting bricks and granites. They are also used in transport and communication:for example,they are used instead of cables in telecommunication, and are used in flight simulations to train pilots. In the field of medicine,lasers have made 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. Skin blemishes can been removed by the help of lasers. Lasers helps to control pollution.They
are useful for measuring the size of pollutant particle in the air. They can also be useful for clearing up oil slicks on the surface on the seas. They can also be useful for measuring the distance between the two useful objects such as between earth and moon. Thus it can be said they they are useful in the field of medicine,pollution control and measurement.Because of the advantages mentioned above lasers are completely beneficial.Unfortunately, lasers can be used in the means of wars. It is just misuse of them. They can be mercilessly used to kill human beings: that's why they are also called "Death Rays". In the wars they are used in guiding missiles and finding range for gunners. It is the exploitation of lasers,and in this sense, they invite demerits and ruins. But if properly used , they can bring development in the human civilization. It is wise of human beings not to invite any collision courses of human civilization.
and devices. Lasers are its most modern achievements. Lasers are defined as the devices which produce pure and intense beams of light or radiation. They were invented in 1960. At the time of invention ,nobody knew what to do with them but today they are widely used in many sectors tremendously. Especially in the field of industry they are used for cutting clothes,piercing leather and even hard substances like diamond and metals also are used for cutting bricks and granites. They are also used in transport and communication:for example,they are used instead of cables in telecommunication, and are used in flight simulations to train pilots. In the field of medicine,lasers have made 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. Skin blemishes can been removed by the help of lasers. Lasers helps to control pollution.They are useful for measuring the size of pollutant particle in the air. They can also be useful for clearing up oil slicks on the surface on the seas. They can also be useful for measuring the distance between the two useful objects such as between earth and moon. Thus it can be said they they are useful in the field of medicine,pollution control and measurement.Because of the advantages mentioned above lasers are completely beneficial.Unfortunately, lasers can be used in the means of wars. It is just misuse of them. They can be mercilessly used to kill human beings: that's why they are also called "Death Rays". In the wars they are used in guiding missiles and finding range for gunners. It is the exploitation of lasers,and in this sense, they invite demerits and ruins. But if properly used , they can bring development in the human civilization. It is wise of human beings not to invite any collision courses of human civilization.
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