Definition: Spectroscope, a device used to view tiny objects, is also known as an optical microscope. The word "spectroscope" refers to a telescope or magnifying glass that helps in observing small items such as dust particles, atoms, and molecules within larger objects. Detailed definition: - Spectroscopy: the study of light and other radiation by means of lenses, mirrors, or other devices designed to focus light. - Microscope: an optical instrument for viewing microscopic objects. It can be used to observe microorganisms (e.g., viruses), bacteria, cells, fungi, and other small organisms. Spectroscope is a specific type of microscope that uses multiple lenses, mirrors, or other equipment to magnify and analyze the image of tiny particles like dust, atoms, molecules, and even living organisms. This allows scientists to study these tiny entities under very low light conditions for detailed observations.