Spectrum Analysis Six Lectures Delivered in 1868 Before the Society of Apothecaries of London...

absorption acid Ångström apparatus appear APPENDIX bands barium blue bodies bright bands bright lines Bunsen cæsium calcium carbon chemical chemical elements chloride chromosphere coincident colour comet compound contains continuous spectrum corona dark lines detected diagram didymium double line earth electric spark emitted examined F line Fe Fe Fe flame Fourth Series Fraunhofer Fraunhofer's gaseous gases give glass green heat Huggins hydrogen lines incandescent inch intensity Kirchhoff Lecture lens light lithium Lockyer luminous magnesium miles per second millimetre motion nebula nitrogen object-glass observed obtained oxide oxygen pass Phil placed plate platinum portion position potassium present prism produced prominences proper motion rays refracting refrangible rubidium salts seen Sirius slit sodium sodium line solar atmosphere solar lines solar spectrum spectra spectroscope spectrum analysis stellar strontium substance sun's telescope temperature thallium tube vapour velocity violet visible wave-length whilst wire yellow