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Whiteboard Projector Screen
The entrance slit in the spectroscopic instrument is generally understood as restricting the entry of stray light sources and allowing light to pass through the spectroscopic system (triangular prism. Grating), but for the appearance of dispersion (spectral surface). The formation of bright lines and dark lines is affected by this slit It seems that these causes are covered, so that researchers cannot understand the true source of dispersion. For the slit image, the spectroscopic system (triangular prism. Grating) senses only a different material image (the upper and lower slits are the same material image, and the white light source in the middle is an image). The only understanding of the appearance of the dispersion image comes from the white light, ignoring the existence of another material image (slit image).
November 03, 2020