What is a Spectroscope?

What is a Spectroscope?

ANSWER:

From the Latin word 'specere' meaning image, and the Greek word 'scopos' meaning to observe. A spectroscope was an early instrument for visually studying dispersed light. These devices included either a prism or diffraction grating for dispersing the light, telescopes for viewing narrow regions of the dispersed light, and protractors or other calibrated scales for measuring the position of a narrow region.