Explore 18 English words about measurement with pronunciation, definitions and example sentences.
the scientific measurement of light in terms of its intensity, color, and other properties
"Photometry measures light."
"Astronomers use photometry to measure the brightness of stars and detect planets passing in front of them."
an instrument used to measure and indicate the altitude of an object above a fixed level, typically the Earth's surface
"The pilot checked the altimeter to see how high the plane was."
"An altimeter is an instrument that measures altitude above a fixed reference point"
a device used to measure the speed and direction of the wind
"The anemometer measures wind speed."
"The meteorologist used an anemometer to measure the wind speed during the approaching storm."
the unit of electric current, symbolized as "A" in the International System of Units
"One ampere is a unit of electric current."
"The electrical circuit carries a current of fifteen amperes which is enough to power several appliances."
a scientific instrument used to measure air pressure
"The barometer shows that the air pressure is falling fast."
"A barometer is a scientific instrument measuring atmospheric pressure"
a unit to measure the purity of gold, the purest gold being 24 karats
"24 karat gold."
"This ring is made of 18 karat gold."
the total length of the external boundary of something
"The guards walked along the perimeter of the army base."
"A perimeter is the continuous boundary line enclosing a defined area"
the measurement of land elevation variations comparing to sea level or a chosen reference point
"Hypsometry measures land elevation above sea level."
"Hypsometry uses satellite data to measure the height of mountains and the depth of ocean trenches."
the measurement and analysis of water flow, levels, and properties in natural bodies of water and hydraulic systems
"Hydrometry measures water."
"Hydrometry involves measuring the flow rate of rivers to predict flooding and manage water resources for farms and cities."
the measurement and analysis of the spectrum of electromagnetic radiation emitted or absorbed by substances
"Use mass spectrometry."
"The chemist used mass spectrometry to identify the unknown substance based on the masses of its molecules."
a device used to measure the electric potential difference between two points in an electrical circuit
"The voltmeter reads 12V."
"The electrician used a voltmeter to check if the outlet was supplying the correct voltage to the appliance."
a device used to measure the pressure of gases in a closed system, typically by comparing it to atmospheric pressure
"The manometer shows pressure."
"The mechanic used a manometer to measure the pressure inside the car's tires and refill them to the proper level."
a temperature sensor that generates electricity based on heat
"The thermocouple measures temperature."
"The furnace used a thermocouple to sense the flame temperature and automatically shut off the gas if it got too hot."
the scientific study of measurement, including the development of measurement standards and techniques
"Metrology ensures accuracy."
"The factory's quality control department relies on metrology to ensure every part is manufactured to precise specifications."
the scientific measurement of heat exchange in chemical or physical processes
"Calorimetry measures heat."
"The chemistry students used calorimetry to measure how much heat was released when they burned a sample of food."
the measurement of variations in gravitational fields to understand the Earth's structure and properties
"Gravimetry is precise."
"Gravimetry helps geologists find underground caverns or oil deposits by measuring tiny variations in the pull of gravity."
a measure of the brightness of a light source as perceived by the human eye
"The luminance unit is candela."
"The luminance unit candela measures the brightness of a light source in a specific direction."
the process of measuring how dense something is by assessing how much light it absorbs or transmits
"The doctor uses densitometry to check bone density."
"The hospital uses bone densitometry to measure a patient's bone density and assess their risk for fractures."
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