This paper describes the design of a 3D printed spectrometer for the visible and near-infrared region of the electromagnetic spectrum of light. The device has a resolution of about 2 nm and forms only one part of the whole, which still consists of a suitable light source, sample container or cuvette, and accompanying optical cables. The spectrum of light is displayed on a computer in an application developed specifically to demonstrate the work of this instrument. The spectrometer is low-budget, and it is adequate as a
teaching aid in schools or for simpler projects, aimed at obtaining information about the spectrum of light in a fast and simple way.
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