## The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1923 - Physics |

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Page 450

National Physical Laboratory * . THE theory of the

regarded 1 as the generalization of the theory of the

which play ...

**Unit**Magnification Surfaces of a Glass Ball . By ALICE EVERETT , M . A . ,National Physical Laboratory * . THE theory of the

**unit**surfaces of lenses may beregarded 1 as the generalization of the theory of the

**unit**or principal planeswhich play ...

Page 451

sphere by thin pencils proceeding outwards from M along MA , MB will be equal ,

and therefore the points conjugate to M with respect to the two faces will be a pair

of

sphere by thin pencils proceeding outwards from M along MA , MB will be equal ,

and therefore the points conjugate to M with respect to the two faces will be a pair

of

**unit**points with respect to the whole sphere . It is known that for a single ...Page 565

National Physical Laboratory . ) PREVIOUS note ( Phil . Mag . vol . xlvi . p . 450 ,

1923 ) regarded as a lens is an uncorrected system . The figures accompanying

the ...

**Unit**Curves of a Photographic Lens . By ALICE EVERETT , M.A. ( From theNational Physical Laboratory . ) PREVIOUS note ( Phil . Mag . vol . xlvi . p . 450 ,

1923 ) regarded as a lens is an uncorrected system . The figures accompanying

the ...

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### Contents

SIXTH SERIES | 1 |

JULY 1923 | 17 |

Mr B E Mourashkinsky on the Diffraction Pattern in a case | 29 |

79 other sections not shown

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absorption alloys angle appears approximately armature assume atom break calculated centre charge circuit compared considerable considered constant corresponding curve density determined direction distance effect electric electrons elements energy equal equation evidence experimental experiments expression fact field force function give given greater heat hydrogen increase integral intensity latter length less light limit lines magnetic marked maximum mean measured method molecules motion negative observed obtained occur oscillation pass period Phil plane plate position possible potential present pressure primary probably produced quantity radiation rays regard region relation relative represented respectively rotation seen separation shown side solution spectrum surface Table taken temperature theory tube unit variation various vary velocity volume zero