Spectroscope dating from the turn of the twentieth century,artwork. Analysis is being performed on sodium chloride (salt,NaCl). The specimen is being heated strongly whilst a powerful lamp (left) is shone through it. This beam is then focused,and dispersed by a prism (right) to be displayed on a screen. The D line indicates the presence of sodium | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 5228 px × 3373 px |
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Property Release : | Non requis |
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