349
ADOBE FRAMEMAKER 7.0
Classroom in a Book
•
(Windows) Control-Alt-click the entry.
•
(Mac OS) Control-Option-click the entry.
•
(UNIX) Control-right-click the entry.
FrameMaker 7.0 opens Hyper1.fm and displays and selects the section heading that
contains the hypertext marker (
The Achievements of Nicola Tesla
).
3
If you want, go back to the TOC and repeat the previous step on another entry.
4
Double-click the index file in the book window and test the hypertext links there by
following the procedure in step 2, putting the cursor on the page number. (To activate a
hypertext link in an index, you usually click a page number instead of the text of the index
entry.)
5
When you’re finished, close all the documents, but keep the book window open.
6
Save the book file.
Using cross-references as hypertext links
Now you’re ready to explore another way that FrameMaker 7.0 automatically creates
hypertext links. Every cross-reference you insert in a document can be used as a hypertext
link to its source.
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to acquire magnetic properties, the opposite might
also prove to be true: a magnet could possibly be
used to generate a flow of electricity.
• • •
Michael Faraday
Michael Faraday (1791–
1867) gave his famous lecture in 1830 in which he
demonstrated, for the first time in history, the princi-
ple of electromagnetic induction. He had constructed
powerful electromagnets consisting of coils of wire.
When he caused the magnetic lines of force sur-
rounding one coil to rise and fall by interrupting or
varying the flow of current, a similar current was in-
duced in a neighboring coil.
The importance of Faraday’s discovery was that it
paved the way for the generation of electricity by me-
chanical means. However, the basic generator pro-
duces an alternating flow of current (AC).
In recent years other methods have been developed
for generating electrical power in relatively small
quantities for special applications. Semiconductors,
which combine heat insulation with good electrical
conduction, are used for thermoelectric generators
to power isolated weather stations, artificial satel-
lites, undersea cables and marker buoys. Specially
developed diode valves are used as thermionic gen-
erators with an efficiency, at present, of only 20% but
the heat taken away from the anode is used to raise
steam for conventional power generation.
Section 3: The Achievements of Nicola Tesla
Edison’s DC generators could not, in themselves,
have achieved the spectacular progress that has
been made in the 20th century in the field of electric-
ity. All over the world we depend totally on a system
of transmitting electricity over long distances which
was originally created by an amazing inventor whose
scientific discoveries changed, and are still chang-
ing, the world. His name—Nicola Tesla (1856–
1943)—was scarcely known to the general public,
especially in Europe, where he was born.
Some people reckon that it was this astonishing vi-
sionary who invented wireless, remote control, ro-
botics, and a form of X-ray photography using high
frequency radio waves. A patent which he took out in
the U.S.A. in 1890 ultimately led to the design of the
humble ignition coil which energizes billions and bil-
lions of spark plugs in all the motor cars of the world.
His American patents fill a book two inches thick.
Young and Inspired
Nicola Tesla was born in
a small village in Croatia. Tesla studied at the Graz
Technical University and later in Budapest. Early in
his studies he had the idea that a way had to be
found to run electric motors directly from AC genera-
tors. His professors had assured him categorically
that this was not possible, but young Tesla was not
convinced. When he went to Budapest he got a job in
the Central Telegraph Office, and one evening in
1882, as he was sitting on a bench in the City Park
he had an inspiration which ultimately led to the so-
lution of the problem.
Tesla remembered a poem by the German poet Go-
ethe about the sun which supports life on the earth
and when the day is over moves on to give life to the
other side of the globe. He picked up a twig and be-
gan to scratch a drawing on the soil in front of him.
He drew four coils arranged symmetrically round the
circumference of a circle. In the center he drew a ro-
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