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PROCEEDINGS
OF THE
PHYSICAL SOCIETY OF LONDON.
From January 1894 to October 1895.
VOL. XIII.
LONDON:
PRINTED BY TAYLOR AND FRANCIS,
RED LION COURT, FLEET STREET.
MDCCCXCV.
CONTENTS.
On the Behaviour of an Air-Core Transformer when the
Frequency is below a certain Critical Value. By E. C.
RIMINGTON. (Plates I. & II.) ...
A New Mode of making Magic Mirrors. By J. W. KEARTON ..
Some Observations on Diffraction. By W. B. CROFT, M.A.
(Plates III.-VI.)
36
The Viscosity of Liquids. By OWEN GLYNNE JONES, B.Sc.
49
On the " Magnetarium." By H. WILDE, F.R.S. . .
64
A new Electrical Theorem. By THOMAS H. BLAKESLEY, M.A.. 65
The Attachment of Quartz Fibres. By C. V. Boys, A.R.S.M.,
F.R.S.
68
A Method of finding the Refractive Index of a Liquid; applic-
able when the Liquid is not Homogeneous. By T. H.
LITTLEWOOD, M.A.
74
On a new Harmonic Analyser. By Professor O. HENRICI,
77
Harmonic Analyser, giving Direct Readings of the Amplitude
and Epoch of the various constituent Simple Harmonic
Terms. By ARCHIBALD SHARP, B.Sc., Wh.Sc., A.M.I.C.E..
Remarks on Prof. Henrici's Paper made by Professor PERRY,
F.R.S., in which he describes a Simple Machine which may
be used to develop any Arbitrary Function in Series of
Functions of any Normal Forms
89
97
Page
On the Mechanism of Electrical Conduction.-Part I. Con-
duction in Metals. By CHARLES V. BURTON, D.Sc.
103
The Minimum Temperature of Visibility. By P. L. GRAY,
B.Sc., Assoc.R.C.S., Lecturer in Physics, Mason College,
Birmingham
122
On the Design and Winding of Alternate-Current Electro-
magnets. By SILVANUS P. THOMPSON, D.Sc., F.R.S., and
MILES WALKER
133
On Electromagnetic Induction in Plane, Cylindrical, and
Spherical Current-Sheets, and its Representation by Moving
Trails of Images. By G. H. BRYAN, M.A.
145
On Dielectrics. By ROLLO APPLEYARD
155
Note on the Behaviour of certain Bodies in presence of Electro-
magnetic Oscillations. By Professor G. M. MINCHIN, M.A.. 170
The Passage of Hydrogen through a Palladium Septum, and
the Pressure which it produces. By WILLIAM RAMSAY,
Experiments on the Relations of Pressure, Volume, and Tempe-
rature of Rarefied Gases. By E. C. C. BALY, 1851 Exhi-
bition - Scholar in the University College, London, and
WILLIAM RAMSAY, Ph.D., F.R.S. (Plate VII.)
172
... 187
The Clark Cell when Producing a Current. By S. SKINNER,
M.A., Lecturer at Clare College, and Demonstrator at the
Cavendish Laboratory, Cambridge
218
A New Integrating Apparatus. By A. SHARP, B.Sc... .. 227
Magnetic Shielding by a Hollow Iron Cylinder: Simplest Case.
By JOHN PERRY, F.R.S.
227
The Hatchet Planimeter. By F. W. HILL
229
The Influence of Temperature on the Specific Heat of Aniline.
By E. H. GRIFFITHS, M.A. (Plates VIII. & IX.) ........ 234
The Influence of the Relative Volumes of Liquid and Vapour
on the Vapour-Pressure of a Liquid at Constant Temperature.
By SYDNEY YOUNG, D.Sc., F.R.S., University College, Bristol 271
The Significance of Wiener's Localization of the Photographic
Action of Stationary Light-Waves. By J. LARMOR, F.R.S.,
Fellow of St. John's College, Cambridge
275
On a Suggestion by Professor J. J. Thomson in Connexion
with the Luminescence of Glass due to Kathode Rays. By
JOHN BURKE, B.A., Lecturer in Physics, Mason College,
Students' Simple Apparatus for Determining the Mechanical
Equivalent of Heat. By Professor W. E. AYRTON and H. C.
HAYCRAFT
287
295
Mirrors of Magnetism. By SILVANUS P. THOMPSON, F.R.S.,
and MILES WALKER
310
A Modification of the Ballistic-Galvanometer Method of Deter-
mining the Electromagnetic Capacity of a Condenser. By
F. WOMACK
323
On the Determination of Thermal Conductivity and Emissivity.
By N. EUмORFOPOULOS, B.Sc., Demonstrator in Physics, Uni-
versity College, London...
On the Influence of the Dimensions of a Body on the Thermal
Emission from its Surface. By ALFRED W. PORTER, B.Sc.,
Demonstrator in Physics, University College, London
327
343
On the Passage of an Oscillator Wave-train through a Plate
of Conducting Dielectric. By GEORGE UDNY YULE, Demon-
strator in Applied Mathematics, University College, London 358
Energy Movements in the Medium separating Electrified or
Gravitating Particles. By H. N. ALLEN, University of
Nebraska, Neb.
392
On a Simple Form of Harmonic Analyser. By GEORGE UDNY
YULE, Demonstrator in Applied Mathematics, University
College, London
403
On the Objective Reality of Combination Tones. By A. W.
RÜCKER, M.A., F.R.S., and E. EDSER, A.R.C.S.
412
Some Acoustical Experiments. By CHARLES V. BURTON, D.Sc.,
430
....
Tests of Glow-Lamps, and Description of the Measuring Instru-
ments Employed. By Professor W. E. AYRTON, F.R.S., and
E. A. MEDLEY
439
The Tin-Chromic Chloride Cell. By S. SKINNER, M.A. ..... 477
Note on a Simple Graphic Illustration of the Determinantal
Relation of Dynamics. By G. H. BRYAN
481