Studies in Spectrum Analysis

absorption alloy aluminium Ångström arrangement atmosphere atomic weight atoms band barium bodies bright lines Bunsen Bunsen burner cadmium calcium candle chemical chloride chromosphere cobalt coincident coloured complete continuous spectrum deal density dissociation disturbance electric lamp electrode elements employed ether experiments fact flame Fraunhofer lines gases give glass heat heliostat hydrogen increase instance iodide iron Kirchhoff lens light source liquid long and short longest lines magnesium matter means metallic vapours metalloids method millimetre molecular molecules motion observed obtained oxide oxyhydrogen flame particles pass phenomena photograph piano plate platinum wire poles portion pressure prism produced Prof rarefaction rays refrangible result reversed salts seen sender short lines slit sodium sodium vapour solar spectrum solid spark spec spectra spectroscope Sprengel pump Strontic strontium substances temperature thallium thickness things tion tium trum tube vibration violet visible wave length white light yellow