Physics Notes

Important Scientific Instruments and their usage

Important Scientific Instruments and their usage

Shankar IAS Monthly Prestorming March 2019 PDF – Free DownloadToday we will be covering a very important topic from the Physics part of the General Knowledge section that is – Important Scientific Instruments and their Usage. The post is very helpful for the upcoming Exams

Accumulator It is used to store electrical energy
Altimeter It measures altitudes and is used in aircraft.
Ammeter It measures the strength of electric current (in amperes).
Anemometer It measures the force and velocity of the wind.
Audiometer It measures the intensity of sound.
Audiphones It is used for improving the imperfect sense of hearing.
Barograph It is used for continuous recording of atmospheric pressure.
Barometer It measures atmospheric pressure.
Binocular It is used to view distant objects
Bolometer It measures heat radiation
Calorimeter It measures the quantity of heat.
Carburettor It is used in an internal combustion engine for charging the air with petrol vapor.
Cardiogram It traces movements of the heart, recorded on a cardiograph.
Chronometer It determines the longitude of a place in a ship.
Cinematography It is an instrument used in cinema making to throw on screen and enlarged image of the photograph.
Colorimeter An instrument for comparing intensities of colour.
Commutator An instrument to change or remove the direction of an electric current, in dynamo used to convert alternating current into direct current.
Cresco graph It measures the growth in plants.
Cyclotron A charged particle accelerator which can accelerate charged particles to high energies.
Dynamo It converts mechanical energy into electrical energy
Dynamometer It measures force, torque, and power
Electroscope It detects the presence of an electric charge.
Endoscope It examines the internal parts of the body.
Eudiometer A glass tube for measuring volume changes in chemical reactions between gases.
Fathometer It measures the depth of the ocean.
Galvanometer It measures the electric current of low magnitude.
Hydrometer It measures the specific gravity of liquids.
Hydrophone It measures sound under water.
Hygrometer It measures humidity in the air.
Kymograph It graphically records physiological movements (Blood pressure and heartbeat).
Lactometer It determines the purity of milk.
Manometer It measures the pressure of gases.
Mariner’s compass It is an instrument used by the sailors to determine the direction.
Microphone It converts the sound waves into electrical vibrations and to magnify the sound.
Microscope It is used to obtain a magnified view of small objects.
Odometer An instrument by which the distance covered by wheeled vehicles is measured.
Periscope It is used to view objects above sea level (used in submarines)
Phonograph An instrument for producing sound.
Photometer The instrument compares the luminous intensity of the source of light
Potentiometer It is used for comparing the electromotive force of cells.
Pyrometer It measures very high temperature.
Quartz Clock A highly accurate clock used in astronomical observations and other precision work
Radar Radio, angle, detection and range is used to detect the direction and range of an approaching aeroplane by means of radio micro waves
Radiometer It measures the emission of radiant energy.
Rain Gauge An apparatus for recording rainfall at a particular place.
Rectifier An instrument used for the conversion of AC into DC.
Refractometer It measures refractive index.
Saccharimeter It measures the amount of sugar in the solution.
Salinometer It determines salinity of solution.
Seismograph It measures the intensity of earthquake shocks.
Sextant This is used by navigators to find the latitude of a place by measuring the elevation above the horizon of the sun or another star.
Spectrometer It is an instrument for measuring the energy distribution of a particular type of radiation.
Spectroscope An instrument used for spectrum analysis
Speedometer It is an instrument placed in a vehicle to record its speed.
Spherometer It measures the curvatures of surfaces.
Sphygmomanometer It measures blood pressure.
Stereoscope It is used to view two dimensional pictures.
Stethoscope An instrument which is used by the doctors to hear and analyse heart and lung sounds.
Stroboscope It is used to view rapidly moving objects.
Tachometer An instrument used in measuring speeds of aero planes and motor boats.
Teleprinter This instrument receives and sends typed messages from one place to another.
Telescope It views distant objects in space.
Theodolite It measures horizontal and vertical angles.
Thermometer This instrument is used for the measurement of temperatures.
Thermostat It regulates the temperature at a particular point.
Transistor A small device which may be used to amplify currents and perform other functions usually performed by a thermionic valve
Udometer It is used to measure the amount of liquid precipitation over a set period of time. It is also called Rain Gauge.
Vernier An adjustable scale for measuring small subdivisions of scale
Viscometer It measures the viscosity of liquids.
Voltmeter It measures the electric potential difference between two points.

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