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

How is our atmosphere different from the atmospheres?, How is our atmospher...

How is our atmosphere different from the atmospheres on Venus and Mars? Earth's atmosphere is different from those of Venus and Mars. This difference lies essentially in their c

Define hypothalamic control of anterior pituitary gland, Define Hypothalami...

Define Hypothalamic Control of Anterior Pituitary Gland The hypothalamus controls many of the automatic functions of the body. It secretes a series of different neurosecretory

Zoology, classification of animals

classification of animals

Explain the sensory decussation - feature of medulla, Explain the Sensory D...

Explain the Sensory Decussation - Feature of Medulla Some of the sensory nerves ascending to the cerebrum from spinal cord cross from one side to the other in the medulla. Card

Mineral, What are some faqs about the mineral Bloodstone.

What are some faqs about the mineral Bloodstone.

How to prepare hydrogen, How to prepare hydrogen Hydrogen can be prepar...

How to prepare hydrogen Hydrogen can be prepared from a dilute acid, like as hydrochloric or sulphuric, when it is chemically reacted with a metal like as zinc. The acid may be

Calculate the maximum channel capacity, The Maximum theoretical limit of ch...

The Maximum theoretical limit of channel is governed by Nyquist theorem, which says Bth = 2 x freq in hertz x log2L ( where L = number of level) Thus we have in this case Bth= 2x60

The fujita scale is used to classify intensities of, The Fujita Scale is us...

The Fujita Scale is used to classify intensities of: Tornadoes

Explain the methods of food processing, The methods of food processing by c...

The methods of food processing by covering the two major methods- thermal processing dehydration.  Food processing methods which include  freezing, microwave proces

Psychology, discuss the special conflict that erikson believed marked young...

discuss the special conflict that erikson believed marked young adulthood. Then describe how an individual could best resolve this conflict

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