This section is from the book "Practical Mechanics For Boys", by James Slough Zerbe. Also available from Amazon: Practical Mechanics for Boys.
The force by which the molecules of the same kind are held together.
A line which is equidistant at all points from a center.
Held within certain bounds.
Molecular or atomic form.
To come together from all points.
A surface which is depressed or sunken.
A surface which is raised, or projects beyond the surface of the edges.
One of the elements in a problem or in a compound.
A number indicating the degree or quality possessed by a substance. An invariable unit.
A body having six equal sides.
A term used to designate that line which is at right angles to the line running from the view point.
The metal plate on a lathe which holds the tool post, and which is controlled, usually, by a screw.
Close to; near at hand.
The depression around a bore.
A collar, clutch or clamping piece, which has jaws to hold a bar or rod.
A shaft which has thereon pulleys or gears to connect operatively with the gears or pulleys on a machine, and change the speed.
Tending to; promotive of a result.
An extremely hard aluminum oxide used for polishing.
A term applied to an extremely hard chisel used for cutting and chipping metal.
The action or operation of burning.
Acting together.
Similitude or resemblance, one with another.
A key to prevent a wheel turning on its shaft.
A term used to designate the inoperative point of the crank.
Showing; setting forth.
A substance which will decompose odors.
A chemical which will bring out the picture in making the film or plate in photography.
The length of one-tenth of a meter in the metric system.
The length of ten meters in the metric system.
Not perfect; wrong in some particular.
A plate, such as used in a telephone system, to receive and transmit vibrations.
To change from a solid to a liquid condition.
A perforated plate in a gear-cutting machine, to aid in dividing the teeth of a wheel.
To drive away or scatter.
A material which will destroy harmful germs.
The number of teeth in a gear as calculated on the pitch line.
 
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