Definitions

1. noun

The measurement of the brightness or light intensity of objects or areas.

“The photographer used photometry to adjust the lighting for the perfect shot.”

2. noun

The branch of physics that deals with the measurement of light and its properties.

“The professor lectured on the principles of photometry in her optics class.”

3. noun

A device used to measure light intensity or the amount of light emitted or reflected by an object.

“The researcher used a photometer to collect data on the star’s luminosity.”