Radiation, Science

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.  

Posted Date: 9/28/2012 8:24:14 AM | Location : United States







Related Discussions:- Radiation, Assignment Help, Ask Question on Radiation, Get Answer, Expert's Help, Radiation Discussions

Write discussion on Radiation
Your posts are moderated
Related Questions
Hypersecretion of Adrenocortical Hormones during Childhood Children suffering from hypersecretion of adrenocortical activity are described as Infant Hercules. There is too earl

where can glacier erosion occur?

Define White Blood cells (WBCs) WBCs are also called leukocytes, as they are colourless. They are the army of the human body. Whenever a germ or infection enters our body, the

This mineral has the name "bloodstone" because it provides a deep red color on a streak test. What is its chemical formula? Fe 2 O 3

Disinfection of water streams originating from potable water plants is key in protecting environmental health. Describe the process design and application, along with potential pro

Ask question #Minimum 100 words acceptedYou are caring for a 29-year-old woman who is married with two small children, ages 1 and 3 years, at home. She is recuperating from a left

what does criminal justice have to do with psychology? if I want to become a psychologist to work with young children what course should I take

How does our body know 'what to do' Feeling, knowing, doing anything depends on special structures called nerves. Neuronal cells in the body act as various messengers according

what is ecology

Define Albumin in the Urine Albumin in the urine generally means leaking of the plasma albumin through the inflamed renal glomerulus (glomerulonephritis). It may also be presen