• Actimometer measures direct heating power of the Sun.
• Ammeter is use for measuring current strength
• Voltammeter is an electrolytic cell for conducting electrolytic dissociation of electrolyte.
• What does a drosomoter measure: Dew
• Relative density of an atmosphere is measured by hygrometer.
• Spirograph is an apparatus used for recording the movement of the lungs.
• The maximum limit of sound beyond which a person can become deaf is 129 lbs.
• Charles K Rhodes developed an X-Ray emitting laser in 1990.
• Son meter is an instrument used to study the behavior of vibrating string.
• The instrument used for measuring the velocity of wind is known as anemometer.
Altimeter: an apparatus used in aircraft for measuring altitudes.
Ammeter: is used for to measure intensity of sound.
Anemometer: is an instrument for measuring the force and velocity of wind.
Audiometer: an instrument to measure intensity of sound.
Audiophone: is an instrument required for improving imperfect sense of hearing.
Barograph: for continuous recording of atmospheric pressure.
Barometer: is an apparatus used for measuring the atmospheric pressure.
Binoculars: is an instrument used for seeing distant objects, the rays of light are twice reflected by means of right-angled prisms.
Callipers: a compass with legs for measuring the inside or outside diameter of bodies.
Calorimeter: an instrument used for measuring quantities of heat.
Carburettor: is an apparatus for charging air with petrol vapours in an internal combustion engine.
Cardiogram: a medical instrument used for tracing the movements of the heart.
Cardiograph: is a medical instrument for tracing heart movements.
Chronometer: is an instrument kept on board the ships for measuring accurate time.
Cinematograph: It consists of a series of lenses arranged to throw on a screen an enlarged image of photographs. The lens system which forms the image on the screen is termed the focusing lens.
Commutator: split ring which forms the main part of a D.C. Dynamo.
Compass needle: for knowing approximately the North-South direction at a place.
Crescograph: is an instrument for use in recording growth of plants; invented by J.C. Bose.
Dip Circle: It is an instrument used to determine the angle between the direction of the resultant intensity of earth’s field and the horizontal component at a place. This particular angle is know as the dip of that place.
Latest Who is Who & What is What (Complete General Knowledge Book) for PPSC PMS PCS FPSC CSS Competitive Exam Preparation Most Helping Guide of PMS Jobs Written Test MCQs Information by Adspk
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23/11/2015
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