thought
Men have found the various worlds to be far richer than they originally
thought. They have opened door after door in their vast treasuries,
have ascended throne after throne of power, and ruled realms of
increasing extent. We have no doubt that unfoldings in the future
will amaze even those whose expectations have been quickened by
the revealings of the […]

sizes are designated by numbers from 1 up
Removable nozzles have various size openings through them and the different
sizes are designated by numbers from 1 up. The same number does not always
indicate the same size opening in torches of different makes, nor does it
indicate a nozzle of the same capacity.

and the chief problem was to provide a motor light enough to furnish
sufficient power for driving a balloon that had sufficient lifting
capacity to support it and the aeronaut in the air
Weight, of course, was the great bugbear of every air-ship inventor,
and the chief problem was to provide a motor light enough to furnish
sufficient power for […]

Types of Low-Reluctance Circuits. As the pull of an electromagnet
upon its armature depends on the total number of lines of force
passing from the core to the armature–that is, on the total flux–and
as the total flux depends for a given magnetizing force on the
reluctance of the magnetic circuit, it is obvious that the design of
the electromagnetic […]

air; therefore, if we were to supply pure oxygen in place of air, and in
equal volume, the action would be several times as intense
The oxygen of the combustion only forms one-fifth of the total volume of
air; therefore, if we were to supply pure oxygen in place of air, and in
equal volume, the action would be […]

CHANGING SPEED HOURS TO SECONDS.–As one-
sixtieth of the speed per minute will represent the
rate of movement per second, it is a comparatively
easy matter to convert the time from speed in
miles per hour to fraction of a mile traveled in
a second, by merely taking one-half of the speed
in miles, and adding it, which will very nearly […]

than the first, and had a capacity of 94,000 cubic feet of gas
with a triple air bag of 17,500 cubic feet to compensate for
loss of gas; this latter was kept inflated by a rotary fan
The second airship of Lebaudy construction was 7 feet longer
than the first, and had a capacity of 94,000 cubic feet of […]

_A._–No; the friction, so long as there is no violent heating or abrasion,
is simply in the proportion of the pressure keeping the surfaces together,
or nearly so. It is, therefore, an obvious advantage to have the bearing
surfaces of steam engines as large as possible, as there is no increase of
friction by extending the surface, while there […]

built a dirigible which he proposed to drive by man-power–it
was anticipated that the vessel would be of use in the siege of
Paris, but it was not actually tested till after the conclusion
of the war
In 1872 Dupuy de Lome, commissioned by the French government,
built a dirigible which he proposed to drive by man-power–it
was anticipated that the […]

as 0
With this 200 horse-power Anzani, a petrol consumption of as low
as 0.49 lbs. of fuel per brake horse-power per hour has been
obtained, but the consumption of lubricating oil is
compensatingly high, being up to one-fifth of the fuel used. The
cylinders are set desaxe with the crank shaft, and are of
cast-iron, provided with radiating ribs […]