A spectroscope is a device which measures the spectrum of light. Early spectroscopes were simply a prism with graduations marking wavelengths. Modern spectroscopes generally use a diffraction grating, a movable slit and some kind of photodetector[?], all automated and controlled by a computer.
... negative implications, it merely designated anyone who assumed power for any period of time without a legitimate basis of authority.
The first to have the title of ...