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

Fst-01, Give reason for the benifits of our technological development not r...

Give reason for the benifits of our technological development not reaching all the strata of our society.

Stimulus and response, Stimulus and Response:  Scientists concerned with hu...

Stimulus and Response:  Scientists concerned with human behaviour and attitudes, namely psychologists, have tried to understand the basic process of learning, starting from simple

What is tongue, What is Tongue? The tongue is a major organ. You will a...

What is Tongue? The tongue is a major organ. You will agree that the tongue precisely reflects the state of our digestive system. How? Well, you may have experienced that occas

Define the process of soil acidity, Define the process of Soil acidity ...

Define the process of Soil acidity Acid soils are made more suitable for agricultural use by liming which raises the soil pH.  Soil acidity is commonly decreased by adding carb

Explain the autoregulation function of kidneys, Explain the Autoregulation ...

Explain the Autoregulation function of kidneys The kidneys possess the property of autoregulation. This means that the blood flow in the kidneys remain constant. It is independ

Explain the Water balance function of the kidney, Explain the Water balance...

Explain the Water balance function of the kidney Water is one of the most important constituent in the daily diet. You are already aware of the roles it plays in our body. Main

The copernican revolution, The Copernican Revolution: The Copernican mo...

The Copernican Revolution: The Copernican model consisted of  the Sun at the centre with  the six planets, Mercury, Venus, the Earth with the Moon-round  it, Mars, Jupiter and

Explain decarboxylation, Decarboxylation:   Amino  acids  undergo  decarbox...

Decarboxylation:   Amino  acids  undergo  decarboxylation reaction, enzymatically or by  treatment with  heat,  acid  or alkali (barium hydroxide)  to form the corresponding amines

What a molecule difference between molecules and compounds, What a molecule...

What a molecule is, and the difference between molecules and compounds? A molecule is made up of two or more atoms combined chemically. The atoms can be of the same element, as

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