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Lasers : Laser light is an extremely intense form of electromagentic radiation and its name is acronym for light amplification by stimulated emission of radiation. Lasers are used widely in industry and research laboratories. Their dangers stem from the enormous concentration of the energy of the laser into a very small area. These extremely short, concentrated pulses of light can cause severe eye damage. Both the cornea and the retina may be affected and permanent blind spots can be produced at the points where the lens of the eye brings the rays to a focus, thereby destroying the tissues at the back of the eye.
This focussing effect of the lens of the eye increases the intensity of the laser light by a factor of about a million (106)so low energy laser light can also be dangerous. In practice the maximum safety value is set at one-tenth of this figure. Additional dangers in the use of the laser stem from the very high voltages required to operate its source.
To study a hailstone When it hails, collect some of the hailstones. Cut them in half and view how the ice of the hailstone has been built up in layers. If you live in a region
Disinfection of water streams originating from potable water plants is key in protecting environmental health. Describe the process design and application, along with potential pro
1. city destroyed by earthquake in 1923? 2.the place where two plates collide and one goes over top the other? 3.sudden stress changes in the earth that cause ground shaking.They o
What is Pancreatic juice Pancreatic juice is alkaline in nature (pH about 8.0) and contains both organic and inorganic substances. The enzyme components are trypsin, c
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For this Assignment, you will identify a social issue or problem that is important to you and reflect on how it might be remediated through the application of learning principles t
Changes in Social Organisation: We find that the above trend in social organisation led to a tendency which eventually stifled the progress of these civilisations and led to
formulation of RDA
Starch is not soluble in water ?? It forms colloid in aqueous medium called as micelles. Iodine reacts with both amylose and amylopectin, but the former produces a co
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