Nikola Tesla: Lecture Before the New York Academy of Sciences - April 6, 1897

139 Pages·2016·11.34 MB·English

by  Leland I. Anderson (edit.)

NIKOLA TESLA:
LECTURE BEFORE THE NEW YORK
ACADEMY OF SCIENCES - April 6, 1897
Leland I. Anderson, Editor
TWENTY FIRST CENTURY BOOKS BRECKENRIDGE, COLORADO
ÆTHERFORCE
NIKOLA TESLA:
THE NEW YORK ACADEMY OF SCIENCES
6, 1897
ÆTHERFORCE
Nikola Tesla
International TelecommWlications Union
ÆTHERFORCE
NIKOLA'TESLA: BEFORE
THE NEW YORK ACAD8v1Y OF
The Streams oHenard and Roentgen
and l\!ovel Apparatus lOr Their Prcxiuction
April 1897
Reconstructed
Leland 1. Anderson, Editor
1994
TWENTY ARST CENTURY BOOKS BRECKEI\lRJOOE. COLORAOO
ÆTHERFORCE
Copyright © Leland Anderson
All rights reserved. No p'dlt of this
book may be reproduced in any fonn
or by any means, electronic or
mechanical, including photOCOpying,
recording, or by any mfOrmatIon
storage and retrieval system, without
permission in writing from the
publisher,
of Card Number: 94-61004
,,--,ll.;UV:':
ISBN 0-9636012-1-0(hardcover)
0-9636012-7-X (soft cover)
First Century Books
P.O. Box 2001
Breckenridge, Colorado 80424
ÆTHERFORCE
Contents
Figures vii
Editorial viii
ix
Introduction xiii
Setting 1
on non-publication of 3
Lecture Commentary 7
High frequency apparatus 7
Lenard Roentgen 18
actions from Lenard and Roentgen 26
The
I - 29
Improved Apparatus for the Production of Powerful
Electrical Vibrations; Novel Frequency Measurement
Methods.
Section I Addendum 71
Wireless Telegraphy Receiving Methods.
Section II 83
The Hurtful of Roentgen
"\.-ClIVlli>
""'''''''''Vll III - 95
The Source of Con-
"-'V''''''L)::;''H
and
Appendix 109
Contemporary reviews of lecture III
Acknowledgments 117
ÆTHERFORCE
VI CONTENTS
Sponsorship 118
Index 121
ÆTHERFORCE
vii
Figures
Form of listing: Sec. !f.-Fig. If
LC node in circuit) 14
I- I Method of transformation of electrical energy by oscil 34
latory condenser discharges
1-2 Mechanical of electrical oscillator 35
1-3 illustrated in I with self-induction coil 37
1-4 Coil wound to secure increased r.,,,,,,r:lfv 37
1-5 a secondary coil with a primary circuit coil 38
1-6 System for existing circuits 38
1-7 Circuit controller allowing condensers connected to dis- 39
charge circuit and ~ll<~~~~~.v~1
1-8 H"'5"""v"" of parts and circuits of a small oscillator 39
1-9 of small oscillator diagrammatically shown 41
8
1-10 Apparatus for the manufacture of condensers and coils 46
! -I I High potential coil system having terminals at centers 48
1-12 Photograph of coil system illustrated in II in action 52
1-13 instrument to determine and phase 62
1-14 Method of impulse illumination of instrument disk 67
IA-I5 Devices for '72
IA-16 Other ways of 73
IA-17 interrupter) 74
IA-18 74
IA- (A series of six photographs of drawings of 120 bulbs 76-81
exhibited on walls of New York Academy of
111- Illustrating an experiment the real source of 97
the rays
1lJ-2 Improved Lenard tube 102
111-3 arrangement with improved double-focus 103
tube for reducing actions
111-4 Illustrating arrangement with a Lenard lube for safe 106
working at close range
ÆTHERFORCE
viii
Editorial Remarks
Section I of this lecture is presented with few changes from
the original text by Tesla, an illustration of which
is reproduced on page 30. The text would have benefited
an editor's hand if presented to a publisher at that
but no such editorial "smoothing" has been attempted in
presentation now. Only minor changes have been intro
duced, such as in words that were separated before the turn
of the century but now appear solid. They are: electro
magnetic, electro-motive, in as much, foil, wave
length. few articles and prepositions were missing, and
their have set in brackets []. As
an additional to the reader, certain items have been
marked brackets with an explanation provided in a note.
figures 13 ab, 14, and 16, together with the
photographs of drawings of 120 bulbs
76-81, have
Section I appeared among a group of papers passed on to
children by George Scherff, who was Tesla's personal
secretary, business manager, and confidant from 1895
through A also in the archives of Tesla
Museum copies, were mISSIng
some illustration drawings and photographs. These were
drawn from the archives of Knight Brothers and Boyle
Anderson.
ÆTHERFORCE
Preface
Nikola T esla was born of parents at Smiljan, the
Austro-Hungarian border province of Lika, now part of
Croatia, at midnight July 9-10, 1856. His father, Milutin,
was a Serbian Orthodox priest, and mother, nee Djouka
Mandie, was a family line whose sons were the clergy
and whose daughters were wives of the clergy. Serbian
Orthodox church then used the Julian calendar, and it con-
tinues to use this today for days observance. The
American colonies converted to the Gregorian calendar
years before arrived at York in 1884. When
crossed 'date ' 11 days dropped his per-
sonal calendar. Most institutions observe Tesla's birth date
as 10, which date held for himself, but if the
tolling church Lika could have heard in Ameri
ca when Tesla was born, the calendar date would have been
July 21,
Establishing himself in United States, became a
in 1891. brought to the world great' gifts
for which he induction motor and the
multi-phase alternating current power distribution system
driving it (1888); the fundamental system wireless
raphy embodying "Tesla coil" (
(1898); the Tesla turbine (1913-20), which attracting great
interest; and, among many leading inventive achieve-
VTOL (1928).
*
The Tesla family moved to nearby when Nikola reached the
age of six to enter school. Adding to the uncertainty of the date accord
ed Tesla' s birth is an official certificate of birth entered for him by the
city Gospic his birth date as June 1856. certificate
is reproduced in Nikola Tesla: with Relatives (Bel-
grade: Nikola Tesla Museum, 1993; in Serbian and English), illus.
sec. I thank Milan Radovic, of Wisconsin-Madison Li
braries. for translating this ~'61HH',all'
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