Radiation, Science

Assignment Help:

Radiation:

High doses of radiation are very harmful for human health. Do you know about the disaster ceated by  the first atomic bombs which were exploded on two cities of Japan, Hiroshima and Nagasaki in  1945?  They killed thousands of people and injured many more badly. The  effects  of exposure to intense radiation took years to appear as burns or cancer in human beings. After a couple of decades, the effect on babies born to mothers who were exposed to big doses of  radiation, began  to show up. Radiation  is an important component of man's environment. We receive some radioactivity all the time from cosmic  rays, from terrestrial and atmospheric environment and also from trace amounts of radioactive potassium, strontium and carbon present in the tissues of  the body. At altitudes above 20 km, cosmic radiation is much stronger. Although, we do not find any immediate ill effects of  this natural radiation on our health, one cannot be  sure that they do not have long term effects. 

Then there are man-made sources of  radiation in modern era which have become an indispensable component of our life. Diagnostic medical and dental x-rays affect patients, doctors and technicians. T.V.  sets, radioactive dial watches and luminous markers etc. add small amounts of  radiation to man's environment, while nuclear power plant waste, if not disposed of properly, is a great risk to human health. Major hazards of radiation are testing of  atomic and nuclear bombs. Radiation, like x-rays, gamma rays, alpha and beta particles penetrate the body  tissues and injure them.

The extent of damage is related to the total dose of exposure. Higher doses affect immediately and are fatal. They affect the blood cells and soften the muscles. Acute radiation sickness is a well defined disease. Somewhat lower doses show delayed effects. They cause some cells to divide more rapidly than usual. 'Ibis leads to various forms of cancer like Leukaemia or other malignant tumors. Unfortunately, some of the damages are not recognisable within the life span of  the exposed person, these will become manifest in the coming generations.  


Related Discussions:- Radiation

Explain the malformations or birth defects of genital organs, Explain the M...

Explain the Malformations or Birth Defects of Genital Organs Other gynaecological morbidities cover congenital malformations or birth defects of the genital organs. These occur

Historic mineral that was the original source of radium, Give the common na...

Give the common name of the historic mineral that was the original source of radium and the first substance in which helium was discovered on earth: Pitchblende

Fst-01, describe the factors which decide the broad area of scientific acti...

describe the factors which decide the broad area of scientific activity

Need a question answered, 1. Describe the paths of water through the hydrol...

1. Describe the paths of water through the hydrologic cycle. Explain the processes and the energy gains and losses involved in the changes of water between its 3 states. Operatio

Explain the transfusion of blood, Explain the Transfusion of Blood Blo...

Explain the Transfusion of Blood Blood has been considered as the elixir of life. However, in ancient times, patients were bled to get rid of their foul fluid. Later, as blood

Explain maintenance of ph - functions of bile, Explain Maintenance of pH - ...

Explain Maintenance of pH - Functions of Bile Maintenance of pH: Bile neutralises the hydrochloric acid and helps to maintain a suitable pH. This prevents the injurious effects

Dissolution and dilution, Dissolution and dilution : Water soluble1 miscib...

Dissolution and dilution : Water soluble1 miscible chemical wastes which are harmless in high dilution may be run into the drainage with plenty of water. It may be noted that al

Explain the autonomic nervous system, Explain the Autonomic Nervous System ...

Explain the Autonomic Nervous System (ANS) The autonomic or involuntary part of nervous system controls the functions of the body carried out automatically i.e. initiated in th

Stimulate the making of red blood cells - function of kidney, Stimulate the...

Stimulate the Making of Red Blood Cells - Function of Kidney Stimulate the making of red blood cells. Erythropoietin is a hormone responsible for maintaining the right amount o

What is transamination reaction, What is Transamination Reaction ? Mos...

What is Transamination Reaction ? Most common amino acids can be converted into the corresponding keto acid by 'transamination. In this reaction, there is a transfer of a-amin

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd