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1-
photometry
2-
altimeter
3-
anemometer
4-
ampere
5-
barometer
6-
karat
7-
perimeter
8-
hypsometry
9-
hydrometry
10-
spectrometry
11-
voltmeter
12-
manometer
13-
thermocouple
14-
metrology
15-
calorimetry
16-
gravimetry
17-
luminance unit
18-
densitometry
photometry
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(فتومتری، شیدسنجی)

(فتومتری، شیدسنجی)

نورسنجی

the scientific measurement of light in terms of its intensity, color, and other properties

example
مثال
Click on words
The astronomer used photometry to determine the luminosity of distant stars by measuring their light intensity.
In the laboratory, researchers applied photometry techniques to analyze the color spectrum of light emitted by various chemical reactions.
What is "photometry"?

Photometry is the science of measuring the intensity of light. It involves determining how much light is emitted, reflected, or transmitted by an object or source. This process is important in various fields, including photography, astronomy, and lighting design, to ensure accurate lighting conditions and quality. Photometry helps in evaluating how bright a light source is and how it will appear in different settings.

altimeter
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(ارتفاع سنج)

(ارتفاع سنج)

فرازیاب

an instrument used to measure and indicate the altitude of an object above a fixed level, typically the Earth's surface

anemometer
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بادسنج

بادسنج

a device used to measure the speed and direction of the wind

ampere
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آمپر

آمپر

the unit of electric current, symbolized as "A" in the International System of Units (SI)

barometer
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(بارومِتر)

(بارومِتر)

فشارسنج هوا

a scientific instrument used to measure air pressure

karat
karat
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(عیار)

(عیار)

قیراط

a unit to measure the purity of gold, the purest gold being 24 karats

What is a "karat"?

A karat is a unit of measurement used to denote the purity of gold, with one karat being equal to 1/24th of the whole. Therefore, 24-karat gold is considered to be pure gold. The higher the karat number, the higher the percentage of gold in the item. For example, 18-karat gold contains 75% gold, while 14-karat gold contains 58.3% gold. Karat is also used as a term to describe the weight of gemstones, with one karat equal to 0.2 grams. The term "carat" is sometimes used interchangeably with "karat," but carat is generally used to describe the weight of diamonds and other gemstones, while karat is used to describe the purity of gold.

perimeter
perimeter
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محیط (هندسه)

محیط (هندسه)

the total length of the external boundary of something

hypsometry
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فرازسنجی

فرازسنجی

the measurement of land elevation variations comparing to sea level or a chosen reference point

hydrometry
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(هیدرومتری)

(هیدرومتری)

آب‌سنجی

the measurement and analysis of water flow, levels, and properties in natural bodies of water and hydraulic systems

spectrometry
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(طیف‌نمایی)

(طیف‌نمایی)

طیف‌شناسی

the measurement and analysis of the spectrum of electromagnetic radiation emitted or absorbed by substances

voltmeter
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(ولت‌متر)

(ولت‌متر)

ولت‌سنج

a device used to measure the electric potential difference between two points in an electrical circuit

manometer
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(فشارسنج)

(فشارسنج)

مانومتر

a device used to measure the pressure of gases or liquids in a closed system, typically by comparing it to atmospheric pressure

thermocouple
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ترموکوپل

ترموکوپل

a temperature sensor that generates electricity based on heat

metrology
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(مترولوژی)

(مترولوژی)

اندازه‌شناسی

the scientific study of measurement, including the development of measurement standards and techniques

calorimetry
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کالری‌سنجی

کالری‌سنجی

the scientific measurement of heat exchange in chemical or physical processes

gravimetry
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(ثقل‌سنجی)

(ثقل‌سنجی)

گرانش‌سنجی

the measurement of variations in gravitational fields to understand the Earth's structure and properties

luminance unit
اسم
uk flag
/lˈuːmɪnəns jˈuːnɪt/
واحد روشنایی

واحد روشنایی

a measure of the brightness of a light source as perceived by the human eye

اطلاعات دستوری:

اسم مرکب
densitometry
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(تراکم‌سنجی)

(تراکم‌سنجی)

چگالی‌سنجی

the process of measuring how dense something is by assessing how much light it absorbs or transmits

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