A DICTIONARY

OF

APPLIED PHYSICS

MACMILLAN AND CO., LIMITED

LONDON BOMBAY CALCUTTA MADRAS

MELBOURNE

THE MACMILLAN COMPANY

NEW YORK BOSTON CHICAGO

DALLAS SAN FRANCISCO

THE MACMILLAN CO. OF CANADA, LTD.

TORONTO

OF

APPLIED PHYSICS

EDITED BY

SIR RICHARD GLAZEBROOK

K.C. B., D.Sc., F. R.S.

IN FIVE VOLUMES

VOL. III

METEOROLOGY, METROLOGY, AND
MEASURING APPARATUS

MACMILLAN AND CO., LIMITED
ST. MARTIN'S STREET, LONDON

1923

COBLENTZ, WM. W. (Bureau of Standards, U.S.A.), Ph.D.

Radiation, Measurement of Solar.

CONSTABLE, E. G.

Watches and Chronometers.

CORLESS, RICHARD, O.B.E., M.A.

C. V. B.

S. B.

D. B.

W. W. C.

E. G. C.

R. C.

Meteorological Instruments.

DARWIN, Sir HORACE, K.B.E., M.A., F.R.S., and MASON, CECIL C., O.B.E.,
M.A.

Instruments, Design of Scientific.

DE GRAAF HUNTER, JAMES, M.A., Sc.D., F. Inst.P.

Gravity Survey.

Trigonometrical Heights and Refraction.

DINES, W. H., F.R.S.

Air, Investigation of the Upper.

Radiation.

GOULD, F. A., M.A.

Balances.

Barometers and Manometers.

H. D., C. C. M.

J. DE G. H.

. W. H. D.

F. A. G.

V