SIGNALLING ACROSS SPACE
WITHOUT WIRES.
BEING A DESCRIPTION OF
THE WORK OF HERTZ
& HIS SUCCESSORS.
BY
PROF. OLIVER J. LODGE, F.R.S.
THIRD EDITION,
With Additional Remarks concerning the Application
to Telegraphy, and Later Developments.
LONDON:
“THE ELECTRICIAN” PRINTING AND PUBLISHING COMPANY,
LIMITED,
Salisbury Court, Fleet Street.
Copyright.