...wire were used, the bright diffused light would almost [•.Monthly Microscopical L Journ •--•-- obscure the faint light of the spectra, and entirely...bands in the most refrangible part of the spectrum. To produce good efiects with this apparatus the upper surface of the compound prism P must make an...

...used, the bright diffused light would almost ["Monthly Microscopical L Journ ' Feb. obscure the fiaint light of the spectra, and entirely prevent the possibility...bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper surface of the compound prism P must make an...

...advantage, that it only illuminates the precise position in which it may be. If a dark wire were used, the bright diffused light would almost obscure the...possibility of seeing, let alone measuring, the position of the lines or bands in the most refrangible part of the spectrum. Fig. 116. Method of using this Invention....

...Micro-Speclro- diffusctl ]ight would alnlost obscure scope with Micrometer. ^ f . lint light of the spect ra, and entirely prevent the possibility of seeing, let...bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper surface of the compound prism, P, must make an...

...diffused light would almost obscure scope with Mierometer. ,he faint I jght of the spectrai and en_ tirely prevent the possibility of seeing, let alone measuring,...bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper surface of the compound prism, P, must make an...

...Section of Micro-Spectro- diffused light would almost obscure scope with Micrometer. the faint ljght of the spectra, and entirely prevent the possibility...bands in the most refrangible part of the spectrum. To produce good effects with this apparatus the upper surface of the compound prism, P, must make an...