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

RESPIRATORY SYSTEM, WHAT ARE THE ORGANS OF THE RESPIRATORY SYSTEM?

WHAT ARE THE ORGANS OF THE RESPIRATORY SYSTEM?

Which type of rock is critical for the formation of geysers, Which type of ...

Which type of rock is critical for the formation of geysers? Liquid rock is required for geysers to type in the form of what is known as magma - which is the geological name fo

What makes streams look muddy, What makes streams look muddy? After a h...

What makes streams look muddy? After a heavy rainfall have peoples take samples of running muddy water in glass jars. Let the water stand for many hours unless the sediment has

Softening water with chemicals, Softening water with chemicals Try mak...

Softening water with chemicals Try making suds with a half test tube of hard water and a few drops of soap solution. Next boil a same sample and again try to make suds by usin

Mention the different methods of wheat milling, Q. Mention the different me...

Q. Mention the different methods of wheat milling? Three methods of wheat milling are stone milling, roller milling and fragmentation milling.

Define the disorders of the reproductive system, Define the Disorders of th...

Define the Disorders of the Reproductive System Disorders that may affect the proper functioning of the reproductive system include abnormal hormone secretion, sexually transmi

Cells, the structures that makes up a cell are called

the structures that makes up a cell are called

Diagnosis-scope of first aid, Diagnosis: 1.  Diagnosis of the casualty ...

Diagnosis: 1.  Diagnosis of the casualty involves considering the history, symptoms and signs. 2.  History is the information as to how the accident or illness occurred.

Embedded system, Which of the following are demerits of state-charts?

Which of the following are demerits of state-charts?

Moisture comes from home plants, Moisture comes from home plants Place ...

Moisture comes from home plants Place a cellophane bag over a leaf of some house plant or garden plant and close the end about the stem with a rubber band. Make an observation

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