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Ultraviolet Radiations : The ultraviolet (UV) light has higher energy than visible light. Hydrogen lamps, deuterium lamps and other sources of ultra-violet are used for a variety of purposes in physical, chemical and biological laboratories. These applications include spectroscopy. The sterilisation of instruments, the initiation of chemical reactions and the detection of purines and other substances which fluoresce when irradiated with UV light in chromatography and other separation techniques. Ultraviolet sources may be recognised by their intense pale blue illumination, for example mercury vapour lamps and high voltage sparks and arc emitted at the time of welding.
Technology forecasting: With such power of science in relation to technology, and consequently to satisfy social need, the question arises, can technologies of the future be fo
Social Role of Communication: Social relevance of communication follows from the economic and political role of communication. We, in this country, have often talked about u
Venus-the Clouded Planet Venus, our nearest planetary neighbour, only 40 million km away, has its surface hidden from view by a dense yellowish-white cloud, which extends to 80
A tropical storm will be declared a hurricane when: There is evidence of eye formation and sustained wind speeds of 74 mph
State about the Peaty soils Peaty soils occur in humid regions and have an accumulation of high organic matter. Such peaty soils containing considerable amount of soluble salt
Why does gravity effect people?
give the importants segnificant figure in measure quantities
Define Physiology of Growth and Development Growth refers to 'increase in size' and development refers to 'maturation of function'. They are generally associated with each othe
Lab coats : The lab coat should fit well and should be buttoned up correctly at all times. Cotton lab coats are more suitable than those made from nylon as the former could absorb
Food Chain: As you know from the discussion of the previous subsection, one of the ways in which the organisms are related is through food, that is, one organism becomes food
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