...each chemical element gave off a unique pattern of colored lines when burned. They wrote, "A glance at the prismatic spectrum of a flame may show it to contain...require a laborious chemical analysis to detect." As knowledge of such "flame tests" spread, scientists speculated that perhaps the dark Fraunhofer lines...

...that colour. If this opinion should be correct, and applicable to the other definite rays, a glance at the prismatic spectrum of a flame may show it to contain...laborious chemical analysis to detect." In a subsequent communication*, the same physicist, after a striking description of the spectra of lithium and strontium,...

...: ' ' If this opinion should be correct ami applicable to the other definite rays, a glance at t/ie prismatic spectrum of a flame may show it to contain substances which it ivonld otherwise require a laborious chemical analysis to detect." Questions. — We like to help our...