LIST OF SCIENTIFIC INSTRUMENTS & USAGE

Scientific Instruments and Their Uses



Instrument
Use
Altimeter
An instrument used in aircrafts for measuring altitudes
Ammeter
Measures electric current
Anemometer
Used to measure the speed, direction and pressure of the wind.
Audiometer
Measures intensity of sound
Barograph
Continuous recording of atmospheric pressure
Barometer
Measures atmospheric pressure and conditions.
Binoculars
An optical instrument used for magnified view of distant objects.
Bolometer
Measures infra-red (Heat) radiation.
Callipers
Measures diameters of thin cylinder/wire.
Calorimeter
Measures quantity of heat
Carburettor
Used for charging air with petrol vapours in an internal combustion engine.
Cardiogram(ECG)
Traces movements of the heart ,recorded on a Cardiograph
Cathetometer
Determines heights and levels
Chronometer
Determines longitude of a vessel at sea.
Cinematograph
Used for projecting pictures on the screen.
Colorimeter
Compares intensity of colours
Commutator
Used in generators to reverse the direction of electric current.
Crescograph
Used for measuring growth in plants.
Cryometer
Measurement of low temperature.
Cyclotron
Used for accelerating charged particles in microwave oscillator
Dilatometer
Measures change in volume of substances
Dynamo
Coverts mechanical energy into electrical energy
Electrometer
Measures very small but potential difference in electric currents
Electrometer
Used for measuring electrical potential difference.
Electroscope
Detects presence of an electric Charge
Electron microscope
Used to obtain a magnifying view of very small objects (20,000 times).
Endoscope
To examine internal parts of the body
Fathometer
Measures depth of the ocean
Fluxmeter
Measures magnetic flux
Galvanometer
Measures electric current
Gramophone
Used to reproducing recorded sound.
Hydrometer
Measures the relative density of liquids
Hydrophone
Measure sound under water
Hygrometer
Used to measure the moisture content or the humidity of air or any gas.
Hygroscope
Shows the changes in atmospheric humidity
Hypsometer
Determines boiling point of liquids.
Lactometer
Measures the relative density of milk.
Machmeter
Determines the speed of an aircraft relative to the speed of sound
Manometer
Compares magnetic movement and fields
Manometer
Used to measure atmospheric pressure
Micrometer
Coverts sound waves into electrical vibration
Microphone
Converts sound waves into electrical signals.
Microscope
Used to obtain a magnified view of small objects
Nephetometer
Measures the scattering of light by particles suspended in a liquid
Odometer
An instrument attached to the wheel of a vehicle, to measure the distance travelled.
Ohmmeter
Measures electrical resistance of objects
Ondometer
Measures the frequency of electromagnetic waves(radio waves)
Optometer
Used for testing the refractive power of the eye.
Otoscope
Used for visual examination of the eardrum.
Periscope
Used to view objects above sea level (Used in submarines).
Phonograph
Used for reproducing sound.
Photometer
Compares the luminous intensity of the two sources of light
Polygraph
It simultaneously records changed in physiological processes such as heartbeat, blood pressure & the respiration (used as lie detector)
Pyrheliometer
Used for measuring Solar radiation.
Pyrometer
Measures very high temperature.
Quadrant
Measures altitudes and angles in navigation and astronomy
Radar
Radio, Detection and Ranging.
Rain Gauge
Measures Rainfall.
Refractometer
Measures salinity of solutions
Refractometer
Measures a Refractive Index of a substance.
Sextant
Used by navigators to find the latitude of place by measuring the elevation above the horizon of the sun or another star; also used to measure the height of very distant objects
Sextant
Used for measuring angular distance between two objects.
Siesmograph
Used for recording the intensity and origin of earthquakes shocks.
Spectroscope
Used for Spectrum analysis.
Speedometer
An instrument used for measuring speed of the vehicle.
Spherometer
Measures curvature of spherical objects.
Sphygmomanometer
Measures blood pressure.
Stethoscope
Used for hearing and analysing the sound of Heart.
Tachometer
To determine speed, especially the rotational speed of a shaft(rpm)
Tangent galvanometer
Measure the amount of direct current(DC)
Telemeter
Records physical happenings at a distant place(space)
Telescope
Used for magnified view of distant objects.
Thermometer
Measures Temperature
Thermostat
Automatically regulates temperatures at a constant point.
Tonometer
Measures the pitch of a sound
Transformer
An apparatus used for converting high voltage to low and vice-versa without change in its frequency.
Transponder
To receive a signal and transmit a reply immediately in satellites.
Venturimeter
Measures the rate of flow of liquids
Vernier
Measures Small sub-division of scale.
Viscometer
Measures Viscosity of liquid.
Voltmeter
Used to measure electric potential difference between two points
Wattmeter
To measure electric power
Wavemeter
To measure the wavelength of a radiowave(high frequency waves)


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