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

Explain the propulsive movement, Explain the Propulsive Movement The ba...

Explain the Propulsive Movement The basic propulsive movement of the gastrointestinal tract is peristalsis. Peristalsis is the movement by which the gastrointestinal canal, hav

Ecosystem, Ecosystem: As far as we know, our earth is the only planet w...

Ecosystem: As far as we know, our earth is the only planet where life exists,  though scientists su constantly searching for signs of life on other heavenly bodies. You have al

How different pressures of air force water from a container, How different ...

How different pressures of air force water from a container Fit a test tube with a two-hole stopper. By one hole place a length of glass tube which extends into the test tube a

Procedure of earthing in an appliance, Procedure : There are two parts of ...

Procedure : There are two parts of this activity. Part A deals with the assembling of the continuity testing device (CTD) and Part B deals with checking the effectiveness of earth

Explain factors that influence glomerular filtration rate, Explain the fact...

Explain the factors that influence Glomerular Filtration Rate These include: 1) Renal blood flow: A large proportion of blood flows into the glomerulus. The greater the rate

Explain sinus arrhythmia - electrocardiogram, Explain Sinus Arrhythmia - el...

Explain Sinus Arrhythmia - electrocardiogram In few adults and most children, there is raise in heart rate during inspiration and a decrease during expiration. This rhythm is m

Determine the role of microflora in the soil, Determine the role of microfl...

Determine the role of microflora in the soil The microflora in the soil play an important  role in the decomposition of dead plants and animal and the recycling of nutrient. Li

Solar wind and solar flare, Solar Wind and Solar Flare Most of  the S...

Solar Wind and Solar Flare Most of  the Sun's family is continually bathed in an outflow of material from the Sun's atmosphere. Streams of electrons and protons continuously

Water conservation, true or false? water conservation efforts have been who...

true or false? water conservation efforts have been wholly inaffective

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