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

Construction standards set by bureau of indian standards, CONSTRUCTION STAN...

CONSTRUCTION STANDARDS SET BY BUREAU OF INDIAN STANDARDS : At the construction stage itself, the design of the laboratory buildings should be made in accordance with safety norms.

Define eco-labelling, Question 1 Define Eco-labelling. Explain the envi...

Question 1 Define Eco-labelling. Explain the environmental importance of eco-labelling with examples Question 2 Discuss the elements of environmental roadmap for eco

Explain about the alluvial soils, Explain about the Alluvial soils All...

Explain about the Alluvial soils Alluvial soils are characterised by their extreme depth, often several hundred feet, and a grey or greyish brown colour. Their texture varies

Animal diversity, affinities of ctenophora with platyhelminthes

affinities of ctenophora with platyhelminthes

What is a chemical compound, What is a chemical compound? By definition...

What is a chemical compound? By definition, a compound is a substance in which two or more different elements have combined. There are millions of examples of compounds all aro

Solutions, solutions that can be found in home and its characteristics

solutions that can be found in home and its characteristics

why does a glacier move, Why does a glacier move? It moves due to the...

Why does a glacier move? It moves due to the huge pressure of the ice and snow lowers the freezing point of its lower layers, causing by to melt.

Eye, greatest refraction of light is caused through

greatest refraction of light is caused through

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