Gamma ray radiation is the most powerful and damaging of all the radiation particles. Alpha and Beta particles are much weaker and not as harmful.
Take for example the Computed Tomography Scan C. The amount of adiation that an individual is exposed to can be compared to dental x-rays or five-one hour flights. Gamma ray radiation is not what you would want to be openly exposed to.
Gamma rays can cause damage over time. I believe protection and prevention of radiation exposure should be a top priority. A commonly asked question about radiation exposure deals with the health risks. Are there any health risks? Take for example aspirin. There are risks for taking aspirin if you take too much.
Likewise, radiation when given out in large doses increases health risks. One type of radiation called ionizing radiation can change the structure f the cells in your body according to the Health Physics Society. By changing the structure of the cells in the body, changes in the tissue can occur.
This can lead to your cells not being able to reproduce themselves or the cells can start to produce too much. The main structure found in the cell that can be damaged by radiation exposure is the DNA. This structure is one of the most important because it contains our genetic makeup.
DNA has the ability to repair minor damage. If DNA is repeatedly damaged by being exposed to radiation, the cell will die. This may seem to be of no importance if a few cells are killed by radiation. However, if these damaged cells are in the vital organs that keep us alive, that organ might not function properly. Of course the effects of radiation exposure are different for each individual.
These effects depend on the type of radiation, how you are exposed to it, and our own genetic makeup. Still, a more important question arises due to radiation exposure. Who are at risk for being exposed to radiation? The health effects of radiation exposure are not unique. The main effects of radiation are cancer induction and genetic effects. In fact, out of the natural cancer incidence or fatality, only about 10 per cent can be accounted by the exposure to natural background radiation.
Thus the effects that can be attributed to low level radiation exposure are also caused by large number of other environmental agents. Effects of radiation exposure to low level radiation should not be disregarded; but it should be recognised that they are very small compared to risks of similar effects from other known and unknown agents.
At the radiation exposure standards set by nuclear industry for occupational workers as well as members of public, no discernible effects can arise in population groups. Since the disaster caused by Nagasaki and Hiroshima atom bombs in August , people all over the world became aware of the harmful effect of radioactive substances which emits radiations. Like radioactive material exposure, ionising radiation also have deleterious effect on living being specially mankind. The degree of effect however depends on dose and duration of exposure Table The protection against radiation hazards was not considered seriously as a major environmental threat for human health.
However, the realisation of deleterious effects of radiation hazards in recent years necessitates the need for protection against radiation hazards. Global banning of nuclear weapons, safe disposal of nuclear plant wastes and proper dumping of radioactive materials used in therapeutic purpose etc.
In addition, the workers handling radioactive materials require to undertake appropriate protection measures during working phase at the nuclear plants premises. The International Commission in Radiological Protection ICRP makes recommendations to protect both workers in professions where radioactivity is a particular hazard, and the general public.
They do not as yet set exact limits in all cases, but set forth the following general principles: Nuclear plants are located, designed, constructed and operated to conform to very stringent safety standards to ensure that the risk associated with atomic energy is extremely low. An exclusion zone of 1. An area in the annulus between the exclusion zone boundary and the 5 km radius is provided as sterilized zone.
Off-site emergency plans are also worked out for an area of about 16 km radius to meet any contingency in the unlikely event of an accident. Energy , Environment , Essay , Radiation. Upload Your Knowledge on Environmental Pollution: Sources of Environmental Radiation: Sources, Diseases and Control. Drop files here or. Sources, Technology and Programmes. The instrument consists of a glass sphere of 10 cm diameter, mounted concentrically in a section of a spherical bowl, to focus the sun rays sharply on a card held in grooves cut into the bowl Fig.
Three overlapping pairs of grooves are provided in the bowl to take cards suitable for different seasons during the year Table 2. Sunshine recorder is installed on a masonry pillar of 1. The sphere is supported on the bowl and degree of bent is according to latitude of the station. Depending on the requirement, different instruments are used for recording the data.
Pyranometer pyreheliometer previously is used for measuring total incoming radiation. As the name indicates, it is used for measuring net radiation flux. There are two sensors, which are exposed to the sky and earth. Sensor exposed to sky measures incoming radiation and the other facing the earth measures outgoing radiation.
The instrument is used for measuring photosynthetically active radiation PAR. Difference between the two gives the intercepted or absorbed PAR. Solar radiation in narrow wave bands can be measured with this instrument. Relationship between plant architecture plant morphology and reflectance can be measured with this instrument. Surface temperature of the plants can be measured without contact.
Canopy temperature of crop can also be measured from a distance for estimating plant water status. In international standards S. In meteorology, commonly used unit of radiation is calories cm -2 min On earth, solar radiation is obvious as daylight when the sun is above the horizon. This is during daytime and also in summer near the poles at night, but not at all in winter near the poles. When direct radiation is not blocked by clouds, it is experienced as sunshine, combining the perception of bright white light sunlight in the strict sense and warming.
Warming on the body, ground and other objects depends on absorption electromagnetic radiation of electromagnetic radiation in the form of heat. The amount of radiation intercepted by a planetary body varies inversely with the square of the distance between star and planet. Because changes in winter and summer tend to offset, change in annual average insolation at any given location is near zero, but the redistribution of energy between summer and winter does strongly affect the intensity of seasonal cycles.
Such changes associated with redistribution of solar energy are considered a likely cause for the coming and going of recent ice ages. Existence of nearly all life one earth is fueled by light from the sun. Most autotrophs, such as plants, use the energy of sunlight, combined with minerals and air, to produce simple sugars—a process known as photosynthesis.
These sugars are then used as building blocks and in other synthetic pathways which allow the organism to grow. Heterotrophs, such as animals, use light from the sun indirectly by consuming the products of autotrophs, either directly or by consuming other heterotrophs. Sugars and other molecular components produced by autotrophs are then broken down, releasing stored solar energy and giving the heterotroph the energy required for survival. This process is known as respiration.
Light requirements of plants: Solar energy provides light required for seed germination, leaf expansion, growth of stem and shoot, flowering, fruiting and thermal conditions necessary for physiological functions of the plant. Solar radiation plays an important role as regulator and controller of growth and development.
Solar radiation also influences assimilation of nutrient and dry matter distribution. The basic principle for increasing yield is harvesting more solar energy. All the management practices like optimum time of sowing, optimum plant population, timely application of fertilizers, irrigation management etc.
This is an essay on radiation. It starts off by discussing Light. Light can be defined as a particular type of electromagnetic radiation.
This free Health essay on Essay: Radiation therapy is perfect for Health students to use as an example.
Free radiation papers, essays, and research papers. Nuclear Radiation and Fallout Effects - The Fallout If a nuclear fallout were to occur, . Free Essay: The Effects of Radiation Radiation is the emission of electromagnetic energy that is given off in the form of high speed particles that cause.
Radiation is the process of transmitting energy through space. Radiation can consist of both waves and/or particles. Though both, waves and particles, have similar characteristics, radiation is for the most part in one form or the other/5(3). Essay on the Effects of Radiation: More is known today about effects of exposure to radiation than about any other physical and chemical agent in our environment. The health effects of radiation exposure are not unique.