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Photometer Meaning: Definition, Examples, and Translations

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photometer

[fəʊˈtɒmətə ]

Definition

Context #1 | Noun

scientific measurement

A photometer is an instrument used to measure the intensity of light or the illumination in a specified area. It can be used in various fields, including photography, astronomy, and environmental science. Photometers can quantify the amount of light in different units, such as lux or foot-candles, depending on their design and intended application. Some photometers are designed for specific tasks, while others are more versatile instruments that can accommodate a range of light sources.

Synonyms

illuminance meter, light meter, lux meter.

Examples of usage

  • The scientist used a photometer to measure the light intensity in the lab.
  • He calibrated the photometer before conducting the experiment.
  • Photometers are essential tools in evaluating indoor lighting conditions.

Translations

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Interesting Facts

History of Science

  • The first photometric measurements were conducted in conjunction with the development of gas lighting in the 19th century.
  • Famous physicists, including James Clerk Maxwell, contributed to early theories that improved light measurement techniques.

Photography

  • Photometers are crucial in photography to determine the best exposure settings for capturing images.
  • Different types of photometers are designed for various uses, such as reflected light for landscapes and incident light for portraits.

Technology

  • Modern digital photometers often use sensors that are more sensitive to light, allowing for accurate readings even in low-light conditions.
  • Smartphones today have built-in light sensors that approximate photometer functions, helping users adjust camera settings automatically.

Environmental Monitoring

  • Photometers are used in environmental sciences to measure light levels in ecosystems, aiding in studies about plant growth and health.
  • They help track light pollution in urban areas, allowing for better planning to reduce its impact on wildlife and human health.

Origin of 'photometer'

Main points about word origin

  • The word combines 'photo' from Greek 'phōs,' meaning light, and 'meter' from Greek 'metron,' meaning measure.
  • Its roots trace back to the early 19th century as light measurement began to gain importance in science and photography.

The term 'photometer' originates from the combination of two Greek words: 'photo', meaning light, and 'metron', meaning measure. The invention of the photometer can be traced back to the early 19th century when scientists sought to quantify light for various applications, including studies of light's properties and its effects on materials. Early photometers typically involved comparative methods, where two light sources were evaluated side by side to assess their brightness. Over time, advancements in technology influenced the design and functionality of photometers, leading to more precise and portable devices. With the rise of industries such as photography and cinematography, improved photometers became crucial for achieving proper exposure and illumination standards. Nowadays, photometers are widely used in various sectors, including research, manufacturing, and environmental monitoring.

Word Frequency Rank

Positioned at #22,524, this word is part of extensive vocabulary. It's relatively rare in general usage but may be important in specific fields or formal writing.