Suppose that you wanted to know how bright a star was at several different wavelengths of light.What kind of instrument would you use?
A)a spectrograph
B)a seismograph
C)a photograph
D)a chromatic aberrator

Question

Quizplus · Accepted Answer

A spectrograph is an instrument that separates light into its different wavelengths, allowing scientists to study the properties of light at each wavelength. By using a spectrograph, researchers could measure the brightness of the star at multiple wavelengths and gain a better understanding of its properties. Seismographs are used to measure vibrations in the Earth, photographs capture images of objects, and chromatic aberrators are used to correct color distortion in optical systems but do not measure the brightness of stars at different wavelengths.

Suppose That You Wanted to Know How Bright a Star