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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.
Handling of Chemicals : Laboratory technicians who work in laboratories, need to be aware of the potential danger of the substances they handle. In the case of those working in ch
Explain Oxygen Dissociation Curve While different partial pressures of oxygen are plotted against the amount of oxyhaemoglobin created or dissociated, the sigmoid curve is
Interpersonal Relations Mr. X relates easily to others and describes himself in positive terms (Ho=38). He believes that others can be trusted and that they have his best int
Botany: In the Bronze and the Iron Ages, agriculture became the principal mode of production of man in all lands. It is, thus, not surprising that in India, botany and elementa
Determine about the Plant-Available Soil Moisture Plant available soil moisture or total available water is the difference between the amount of water held in the plants root
Dilute hydrochloric acid (HCl) oxidizes only the terminal -CH20H group with the formation of uronic acid. Glucose is thus oxidized to glucuronic acid.
What is Activation offatty acids ? Fatty acids cannot undergo oxidation in the form in which they are normally present in the body. They must be converted into a form which ca
Functional unit of the nervous system-neuron: The human brain is composed of more than one hundred billion (100,000,000,000 or 1011) cells called 'neurons'. This number which
Maintain the Calcium Levels of Body– Function of Kidney Maintain the body’s calcium levels. Along with parathormone and calcitriol, kidney helps the body to absorb calcium.
What is the professional name for the person who studies fossils? Paleontologist
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