ing projected into the field of vision and the real position is inverted.The same is true in looking into the micro spectroscope. The actual position ofthe different colors may be determined by placing some ground glass or some ofthe lens-paper near the prism and observing with the eye at the… … Fig. t 15. Various Spectrums —All except that of Sodium were obtained by dif-fused day light zvith the slit of such a width as gave the most distinct Fraunhoferlines. It frequently occurs that with a substance giving several absorption bands (e.£\, chlorophyll) the density or thickness of the…
Microscopy
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