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.
... of the Charter
Additionally, the Canadian Charter contains a provision, called the notwithstanding clause, by which some guarantees can be overridden through ...