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Spectrophotometer: meaning, definitions and examples

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spectrophotometer

 

[ˌspɛktrəfoʊˈtɒmətər ]

Definition

Context #1 | Noun

scientific instrument

A spectrophotometer is an instrument used to measure the intensity of light at different wavelengths, allowing for the analysis of the properties of materials. It is commonly used in chemistry and biology to determine concentrations of substances in a solution. By quantifying how much light is absorbed or transmitted, users can derive important information about the sample being examined.

Synonyms

light meter, optical analyzer, spectrometer.

Examples of usage

  • The lab used a spectrophotometer to analyze the sample concentration.
  • Researchers utilized a spectrophotometer to study light absorption in various solutions.
  • The quality control department relied on the spectrophotometer for accurate readings.
  • Using a spectrophotometer, scientists could identify specific compounds in the mixture.

Interesting Facts

Etymology

  • The word combines 'spectrum', meaning a range of colors, and 'photometer', which relates to measuring light.
  • The roots come from Latin: 'spectrum' means 'appearance' or 'image', and 'metron' in Greek means 'to measure'.
  • It first appeared in scientific literature in the late 19th century as scientists sought to understand light absorption.

Science

  • Spectrophotometers are essential in chemistry to determine concentration of substances in solutions by measuring light absorption.
  • These devices vary widely in complexity, from simple handheld versions to advanced models used in laboratories worldwide.
  • Applications include environmental monitoring, quality control in manufacturing, and research in biochemistry.

History

  • The development of the spectrophotometer was influenced by earlier experiments in spectroscopy, which date back to the 17th century.
  • It evolved alongside advancements in optics and photometry, allowing for precise measurements of light.
  • Notable figures like Isaac Newton and Joseph von Fraunhofer contributed to the foundational principles of light and its spectrum.

Pop Culture

  • In popular science fiction, advanced spectrophotometers could allow characters to analyze alien substances or decode alien languages.
  • Films that explore themes of color and light often reference spectrophotometers as tools for scientific exploration.

Technology

  • Modern spectrophotometers often incorporate digital displays and software, enhancing data analysis and user-friendliness.
  • Some advanced versions are connected to computers, allowing for high-resolution data analysis and complex calculations.
  • They are being used in fields like forensics to analyze crime scene evidence through light absorption patterns.

Word Frequency Rank

Positioned at #20,921, this word is part of extensive vocabulary. It's relatively rare in general usage but may be important in specific fields or formal writing.