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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.
how is ecology related to other discipline?
how many element found in nature.
Explain the Process of Filtration - Formation of Urine The kidneys form urine in three phases: simple filtration, selective re-absorption and secretion. Let us begin with the p
Explain Bile - External Defence Mechanism It is an alkaline secretion of the liver, which checks the growth of foreign bacteria on the partially digested food.
In the following table state how gymnosperms are adapted for living on land with respects to each of the following aspects Aspect Adaptation for living on land Alternation of Gener
The Transformation of Medieval Economy: The new techniques led to greater production in agriculture and, therefore, a surplus from the needs of people. Increased productivi
1. Explain the fundamental scientific principles, including basic principles of chemistry and physics. 2. Give an example that applies scientific principles to the study of zo
Explain the Complement System To remove a microorganism by phagocytosis requires phagocytes at the right place in the right time. The organism should adhere to the phagocyte. M
Opening the Airway If a casualty has stopped breathing, first of all we should clear the airway of the victim, so that he/she could inhale fresh air. The procedure is as follow
DISPOSAL OF WASTE MATERIALS : In a school or college science laboratory, chemical wastes, broken glassware, unserviceable non consumable items, obsolete instruments, used biologic
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