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Foam extinguishers : If the burning liquid is in a container the jet should be directed at the inside edge of the vessel or at a vertical surface in order to break the jet and allow the foam to build up and spread across the surface of the liquid (Figure). If this is not possible, the correct procedure is to stand well back (perhaps as far as 6 or 7 m) and to direct the jet with a gentle sweeping movement to allow the foam to drop down and form a layer on the surface of the liquid (Figure). Do not aim the jet directly into the liquid as this will drive the foam under the surface where it will be ineffective in extinguishing the fire and may spread the fire by splashing the liquid on the surroundings.
Figure: Use of foam extinguisher-I. Fig.12.4: Use of foam extinguisher-11.
Military Applications: Another area where the above mentioned properties of lasers are being used with a 'deadly' precision is that of military applications. Lasers have been
Explain the Physiology of Lactation Lactogenesis is the onset of copious milk secretion around parturition, triggered by a fall in plasma progesterone levels. Although some col
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If I send you ab assignment can you finish it by midnight central time TONIGHT
Define the Functions of Cerebrospinal Fluid The CSF has many functions. These include the following: 1) It provides the optimum condition for a meaningful signal/stimulus. T
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what are relations of ecology with other sciences?
Question 1. Discuss the biological factors influencing radioactivity. 2. Explain the quality assurance of computed Tomography. 3. Write short notes on the following
Food Borne Diseases: If the food handler, like the cook, suffers from some infection and is not careful about washing his hands after defecation, the germs or eggs of worm
The Need for Reporting Accidents : All accidents (no matter how trivial) and, dangerous near misses should be recorded. The recording of accidents ensures that all injuries are tr
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