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

A compressed air pop-gun, A compressed air pop-gun Use a straight piece...

A compressed air pop-gun Use a straight piece of glass or plastic tubing of 1 or 2 cm in diameter and 15 or 20 cm in length. Make a piston by twisting some string on a pencil t

Explain the factors controlling movements of gall bladder, Explain the Fact...

Explain the Factors Controlling Movements of Gall Bladder Contraction of gall bladder can be controlled by reflex action, by the presence of foodstuff in the duodenum and by th

Experiment of a weather picture, A weather picture A piece of white blo...

A weather picture A piece of white blotting paper is immersed in a solution having two parts cobalt chloride to one part common salt. While wet the paper will stay pink, but wh

What are fatty acids, What are Fatty acids Fatty acids are grouped in...

What are Fatty acids Fatty acids are grouped into two classes, saturated and unsaturated fatty acids. The terms 'saturated' and 'unsaturated'  fatty acid may not be new to yo

Humanbody, how i can get the nams of all the body of the human

how i can get the nams of all the body of the human

Protozoan, what is the scientific classification of a protozoan

what is the scientific classification of a protozoan

Chromatin, What is the job of chromatin in an animal cell?

What is the job of chromatin in an animal cell?

Minerals and vltamins, Minerals and vltamins Minerals and vltamins ...

Minerals and vltamins Minerals and vltamins are not a source of energy but they are necessary in many of the steps involved in the release of energy in  the cells. Thus,  t

Explain the intercostal muscles, Explain the Intercostal Muscles Look a...

Explain the Intercostal Muscles Look at Figure Can you spot the intercostal muscles? Yes, there are 11 pairs of intercostal muscles. The intercoastal muscles are the muscles

Science And Technology, describe the factors which decide the broad area of...

describe the factors which decide the broad area of scientific activity

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