photometric

/,foutə'metrik/

Thân thiện

A scientist uses a photometric instrument to measure light intensity.

Definition

1. Adjective:
   • Relating to photometry: Of or pertaining to the measurement of light, especially its intensity and other properties.

Usage

• The word photometric is used as a technical adjective, primarily in scientific contexts such as physics, astronomy, and engineering. It describes measurements, data, instruments, or properties related to the quantification of light.
• It is typically placed before a noun it modifies (e.g., photometric data, photometric analysis).

Examples

• Adjective:
  • The telescope is equipped with a photometric sensor for precise light measurement.
  • Astronomers rely on photometric observations to determine the brightness of stars.
  • The study presented a detailed photometric analysis of the LED's output.

Advanced Usage

• "Photometric standard": A reference source of known and stable light output used to calibrate instruments.
  • The laboratory uses a photometric standard to ensure the accuracy of all its light meters.
• "Photometric system": A standardized system for measuring and describing the brightness of celestial objects through specific filters.
  • The Johnson-Cousins UBVRI is a widely used photometric system in astronomy.

Variants and Related Words

• Photometry (n): The science of the measurement of light, in terms of its perceived brightness to the human eye.
  • His research is in the field of photometry.
• Photometer (n): An instrument for measuring the intensity of light.
  • She used a photometer to take the readings.

Synonyms

• Radiometric (adj): Related to the measurement of radiant energy (including light). Note: While related, often refers to a broader spectrum of electromagnetic radiation, whereas is specifically tied to light as perceived by the human eye.

Related Phrases and Compounds

• Photometric calibration: The process of adjusting a light-measuring instrument to give accurate readings.
  • Photometric calibration is a crucial step before the experiment.
• Photometric parallax: A method in astronomy for estimating the distance to a star by comparing its apparent and intrinsic brightness.
  • They estimated the cluster's distance using photometric parallax.

Học thuật

Adjective

1. of or relating to photometry

Từ đồng nghĩa

• photometrical