...very different for different pressures. At a high pressure the constricted portion of the vacuum tube is the hotter while at low pressure it is quite cool,...of CO2 at 5 mm. pressure is equivalent to a column i mm. long at 760 mm. pressure. This is not a very long column of the gas as compared with Paschen's,...

...layer) and approaches a limiting value just as in the case of a black body. Paschen ' has found for CO, in a brass tube heated by a bunsen burner, that a column 7 cm. long emitted and absorbed the band just as strong as a column 33 cm. long, /'. e., it behaves like a column of infinite thickness...

...layer) and approaches a limiting value just as in the case of a black body. Paschen ' has found for CO, in a brass tube heated by a bunsen burner, that a column 7 cm. long emitted and absorbed the band just as strong as a column 33 cm. long, *. e. , it behaves like a column of infinite thickness...

...increase in the thickness of the emitting layer) and approaches a limiting value. -Paschen (loc. «'/.) has found for CO2 at atmospheric pressure, in a brass...pressure is equivalent to a column 1 mm. long at 760 mm. No. i.] INFRA-RED EMISSION SPECTRA. 29 pressure. This is not a very long column of the gas as compared...

...very different for different pressures. At a high pressure the constricted portion of the vacuum tube is the hotter while at low pressure it is quite cool,...equivalent to a column 1 mm. long at 760 mm. pressure. This is not a very long column of the gas as compared with Paschen's, nevertheless, judging from the...

...layer) and approaches a limiting value just as in the case of a black body. Paschen l has found for CO, in a brass tube heated by a bunsen burner, that a column 7 cm. long emitted and absorbed the band just as strong as a column 33 cm. long, /. e., it behaves like a column of infinite thickness...