uses of gamma rays

The different types of electromagnetic radiations in the increasing order of wavelengths are, gamma rays ( g ), X-rays, ultra-violet rays (U.V.), visible radiation, infrared radiation (IR), microwaves and radio wave..

. Nuclear radiation can produce burns, cancer, loss of hair, vomiting and destruction of blood cells. An overdose can cause death. Strict safety regulations are enforced to protect workers and the general public from dangers of radiation. Lead and thick concrete walls are used as shields ..

Above the troposphere is the stratosphere. This zone is rich in ozone. Hence, it is also called ozonosphere. In ozonosphere, oxygen in the presence of sunlight converts to ozone by photochemical dissolution. The ozonosphere completely absorbs short wave solar radiations, such as ultraviolet (uv) r..

Ray optics is also called geometrical optics as it uses the geometry of straight-line paths (rays) to explain the optical phenomen..

Radioactivity - It is a spontaneous emission or disintegration of an unstable nucleus resulting in certain radiations. The elements exhibiting this phenomena are called radioactive elements. e.g., radium, thorium, actinium, polonium etc. Radioactivity does not occur due to any external provocation ..

In conventional X-rays an overlap of organs occurs and often difficult to interpret. These diagnostic difficulties have been eliminated by the use of an X-ray technique called computer Tomography (CT) scaning or computerised Axial Tomography (CAT) Scanning. CT Scan is ..

These are water filters very popularly used in homes and hotels. This filter operates with the help of electricity. The device uses a porcelain filter, charcoal and UV rays to purify the wate..

In conventional X-rays an overlap of organs occurs and often difficult to interpret. These diagnostic difficulties have been eliminated by the use of an X-ray technique called computer Tomography (CT) scaning or computerised Axial Tomography (CAT) Scannin..

Summary - Radioactivity Spontaneous emission of active rays by certain unstable elements. Three types of radiations are: (i) Alpha particles He 2 + ion (Helium nuclei). (ii) Beta - rays - consist of electrons. (iii) Gamma - rays - High energy electromagnetic ..

The skip distance is the shortest distance from a transmitter, measured along the surface of the Earth, at which a sky wave of fixed frequency (more than f c ) will be returned to Earth. One expects there to be a maximum distance, as limited by the curvature of the Earth, but nevertheless a definit..