waited thirty years before they dared to trust the
telephone, just as they waited fifteen years before
they dared to trust the telegraph
In the operation of trains, the railroads have
waited thirty years before they dared to trust the
telephone, just as they waited fifteen years before
they dared to trust the telegraph. In 1883 a few
railways used the telephone in a small way, but
in 1907, when a law was passed that made telegraphers
highly expensive, there was a general
swing to the telephone. Several dozen roads
have now put it in use, some employing it as an
associate of the Morse method and others as a
complete substitute. It has already been found
to be the quickest way of despatching trains. It
will do in five minutes what the telegraph did in
ten. And it has enabled railroads to hire more
suitable men for the smaller offices.

preliminary results of the vote are
The voting period can last between 21 and 31 days, no matter what the
preliminary results of the vote are. A vote can”t be called off
simply because 400 ‘no’ votes have come in and only two ‘yes’
votes. The Call for Votes should include the exact date that the
voting period will end—only those votes arriving on the vote-taker”s
machine before this date can be counted.

things, how can you fix them? A free exchange of information
particularly when the information was in the form of a computer
program, allowed for greater overall creativity
If you don”t have access to the information you need to improve
things, how can you fix them? A free exchange of information
particularly when the information was in the form of a computer
program, allowed for greater overall creativity. When you were
working on a machine like the TX-0, which came with almost no
software, everyone would furiously write systems programs to make
programming easier–Tools to Make Tools, kept in the drawer by
the console for easy access by anyone using the machine. This
prevented the dread, time-wasting ritual of reinventing the
wheel: instead of everybody writing his own version of the same
program, the best version would be available to everyone, and
everyone would be free to delve into the code and improve on
THAT. A world studded with feature-full programs, bummed to the
minimum, debugged to perfection.

THE WING MOVEMENT.–The moment the wing
starts to swing upwardly the rear end is
depressed, and now, as the bird is moving forwardly,
the wing surface has a positive angle of
incidence, and as the wing rises while the forward
motion is taking place, there is no resistance
which is effective enough to counteract the
momentum which has been set up.

_A._–Twelve trials in all; but I need not refer to those in which similar
or identical results were only repeated. The first trial was made under
steam only, the weather was calm and the water smooth. At 54 minutes past 4
in the morning both vessels left the Nore, and at 30-1/2 minutes past 2 the
Rattler stopped her engines in Yarmouth Roads, where in 20-1/2 minutes
afterward she was joined by the Alecto. The mean speed achieved by the
Rattler during this trial was 9.2 knots per hour; the mean speed of the
Alecto was 8.8 knots per hour. The slip of the screw was 10.2 per cent. The
actual power exerted by the engines, as shown by the indicator, was in the
case of the Rattler 334.6 horses, and in the case of the Alecto 281.2
horses; being a difference of 53.4 horses in favor of the Rattler. The
forward thrust upon the screw shaft was 3 tons, 17 cwt., 3 qrs., and 14
lbs. The horse power of the shaft–or power actually utilized–ascertained
by multiplying the thrust in pounds by the space passed through by the
vessel in feet per minute, and dividing by 33,000, was 247.8 horses power.
This makes the ratio of the shaft to the engine power as 1 to 1.3, or, in
other words, it shows that the amount of engine power utilized in
propulsion was 77 per cent. In a subsequent trial made with the vessels
running before the wind, but with no sails set and the masts struck, the
speed realized by the Rattler was 10 knots per hour. The slip of the screw
was 11.2 per cent. The actual power exerted by the engines of the Rattler
was 368.8 horses. The actual power exerted by the engines of the Alecto was
291.7 horses. The thrust of the shaft was equal to a weight of 4 tons, 4
cwt., 1 qr., 1 lb. The horse power of the shaft was 290.2 horses, and the
ratio of the shaft to the engine power was 1 to 1.2. Here, therefore, the
amount of the engine power utilized was 84 per cent.

singularly unfortunate
The first trial of this vessel was made in July of 1900, and was
singularly unfortunate. The winch by which the sliding weight
was operated broke, and the balloon was so bent that the working
of the propellers was interfered with, as was the steering. A
speed of 13 feet per second was attained, but on descending, the
airship ran against some piles and was further damaged. Repairs
were completed by the end of September, 1900, and on a second
trial flight made on October 21st a speed of 30 feet per second
was reached.

flight–apart from numerous drawings which have still a
value–are the helicopter or lifting screw, and the parachute
His chief practical contributions to the science of
flight–apart from numerous drawings which have still a
value–are the helicopter or lifting screw, and the parachute.
The former, as already noted, he made and proved effective in
model form, and the principle which he demonstrated is that of
the helicopter of to-day, on which sundry experimenters work
spasmodically, in spite of the success of the plane with its
driving propeller. As to the parachute, the idea was doubtless
inspired by observation of the effect a bird produced by
pressure of its wings against the direction of flight.

able to get into their computer, from ‘The Mona Lisa’
to ‘The Klein Bottle’ if you use the right ‘printer
The Internet ‘let”s’ you replicate anything anyone is
able to get into their computer, from ‘The Mona Lisa’
to ‘The Klein Bottle’ if you use the right ‘printer.’

A. As time is required to charge the auxiliaries, the feed groove in the
triple valve being small, if the brakes are repeatedly applied and
released without giving time to recharge, the braking power will be
lost.

of sunlight, we do not find red simple red, yellow yellow, etc
When we examine the assemblage of colors spread from the white ray
of sunlight, we do not find red simple red, yellow yellow, etc.,
but there is a vast number of fine microscopic lines of various
lengths, parallel–here near together, there far apart, always the
same number and the same relative distance, when the same light
and prism are used. What new alphabets to new realms of knowledge
are these! Remember, that what we call colors are only various
numbers of vibrations of ether. Remember, that every little group in
the infinite variety of these vibrations may be affected differently
from every other group. One number of these is bent by the prism
to where we see what we call the violet, another number to the
place we call red. All of the vibrations are destroyed when they
strike a surface we call black. A part of them are destroyed when
they strike a substance we call colored. The rest are
reflected, and give the impression of color. In one place on the
flag of our nation all vibrations are destroyed except the red; in
another, all but the blue. Perhaps on that other gorgeous flag, not
of our country but of our sun, the flag we call the solar spectrum,
all vibrations are destroyed where these dark lines appear. Perhaps
this effect is not produced by the surface upon which the rays fall,
but by some specific substance in the sun. This is just the truth.
Light passing through vapor of sodium has the vibrations that would
fall on two narrow lines in the yellow utterly destroyed, leaving
two black spaces. Light passing through vapor of burning iron has
some four hundred numbers or kinds of vibrations destroyed, leaving
that number of black lines; but if the salt or iron be glowing gas,
in the source of the light itself the same lines are bright instead
of dark.