It can best be illustrated by music. The note C of the G clef is
made by two hundred and fifty-seven vibrations of air per second.
Twice as many vibrations per second would give us the note C an octave
above. Sound travels at the rate of three hundred and sixty-four
yards per second. If the source of these […]

type, where E is the filament, moulded into a loop, and cemented
to two platinum wires or electrodes P penetrating the glass bulb
L, which is exhausted of air
Figure 63 represents an ordinary glow lamp of the Edison-Swan
type, where E is the filament, moulded into a loop, and cemented
to two platinum wires or electrodes P penetrating the […]

by a group of planets: we call them moons
In one respect Jupiter seems like a minor sun–he is royally attended
by a group of planets: we call them moons. This system is a favorite
object of study to everyone possessing a telescope. Indeed, I have
known a man who could see these moons with the naked eye, and […]

used, and the size of the gas openings must be such that all these things
are suited to each other if a proper mixture of gas is to be secured
The design of the nozzle, the mixing chamber, the injector, when one is
used, and the size of the gas openings must be such that all these things
are […]

ways that they were called vagabonds, or planets, by the early
astronomers
There are certain stars that have such irregular, uncertain, vagarious
ways that they were called vagabonds, or planets, by the early
astronomers. Here is the path of Jupiter in the year 1866 (Fig.
44). These bodies go forward for awhile, then stop, start aside,
then retrograde, and go on […]

ours, one larger than Mercury, and the asteroids are hardly large
enough to make respectable moons for them
It is seen by the above table that all these moons are larger than
ours, one larger than Mercury, and the asteroids are hardly large
enough to make respectable moons for them. They differ in color:
I. and II. have a bluish […]

patents were proposed by Thomas Jefferson for 17 years the
period was lengthened to 28 years, plus another 28 years–
and most recently to 75 years for corporate copyrights and
‘life plus 50 years’ for individual copyrights
Since the founding of the United States when copyrights or
patents were proposed by Thomas Jefferson for 17 years the
period was lengthened to […]

learned the dramatic story of Morse at his
mother”s knee
Thus it happened that young Theodore Vail
learned the dramatic story of Morse at his
mother”s knee. As a boy, he played around the
first telegraph line, and learned to put messages
on the wire. His favorite toy was a little
telegraph that he constructed for himself. At
twenty-two he went West, in […]

invention called ‘the plow,’ which changed the habits of
‘hunting and gathering’ peoples into civilized cities
If you understand that civilization was based on the new
invention called ‘the plow,’ which changed the habits of
‘hunting and gathering’ peoples into civilized cities…
then you might be able to understand the the changes the
computer and computer networks are making to those […]

hardware or software crash messages, people looking for a
helping hand in keeping their mainframes up and running–
and that was about it for the first 10-15 years of cyber-
space
In the beginning, all the messages on the Net were either
hardware or software crash messages, people looking for a
helping hand in keeping their mainframes up and running–
and that […]