## Philosophical MagazineTaylor & Francis., 1897 - Physics |

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Page 318

of a slit this

of a slit this

**resolving power**is in general less than the theoretical**resolving power**for infinitely narrow lines : ( 1 ) because of the finite angular width of the slit ; ( 2 ) because of the dispersion of the spectroscope train ...Page 334

...

...

**resolving power**, is more generally useful in determining the greatest**resolving power**of a spectroscope under practical conditions than the usual expression for r ( the theoretical resolution of the instrument ) . For very small values ...Page 340

for narrow lines and small

for narrow lines and small

**resolving powers**the ratio is R very nearly unity , and that formula ( 16 ) therefore represents very closely the purity of the spectrum , the same is by no means true for wide lines and ...**Resolving Power**of.### Contents

FIFTH SERIES | 1 |

Proceedings of the Geological Society | 5 |

Mr W Sutherland on Boyles Law at Very Low Pressures | 19 |

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æther amount angle aperture apparatus argon atmo atoms Boyle's law calculated centim centre charge circuit circular polarization coefficients coil condenser conductivity constant contains Crookes tube Crookes's curve cylinder Dalton deflecting force deflexion density determined discharge dissociation distance disturbance effect electric electrification electrodes electrometer electromotive force enantiomorphous equal equation experimental experiments expression galvanometer gases Geissler tube given glass groups of order heat hydrogen increase insulated ions J. J. Thomson lines liquid M'Leod gauge magnetic means measured mercury metal millim molecules motion Number 99 observations obtained ohms oscillations oxygen paper particles Phil plane waves plates polarization pressure produced Prof radiation Radiometer reflexion resistance resolving power Röntgen rays simply isomorphic solution spark spectrum sphere supposed surface temperature theorem theory Thermal Transpiration tion tube vapour varying velocity vibrations viscosity volts volume wire