at first seems amusing rather than serious, but which nevertheless is
often a vexatious trouble, is that due to the propensity of some
people to ‘listen in’ on the line on hearing calls intended for other
than their own stations
A difficulty encountered on non-selective bridging party lines, which
at first seems amusing rather than serious, but which nevertheless is
often […]

endowed with electric batteries for stunning and capturing their
prey
Other fishes–the silurus, malapterurus, and so on–are likewise
endowed with electric batteries for stunning and capturing their
prey. The action of the organs is still a mystery, as, indeed, is
the whole subject of animal electricity. Nobili and Matteucci
discovered that feeble currents are generated by the excitation of
the nerves and […]

The clubroom was dominated by the huge train layout. It just
about filled the room, and if you stood in the little control
area called ‘the notch’ you could see a little town, a little
industrial area, a tiny working trolley line, a papier-mache
mountain, and of course a lot of trains and tracks. The trains
were meticulously […]

with a magnifying glass, the waving spiral line may be seen
If the disk record be dusted with talcum powder, wiped, and examined
with a magnifying glass, the waving spiral line may be seen. Its
variations are the result of the blows struck upon the diaphragm by a
train of sound waves.

York World, has now an outfit of twenty trunk
lines and eighty telephones
A paper of the first class, such as The New
York World, has now an outfit of twenty trunk
lines and eighty telephones. Its outgoing calls
are two hundred thousand a year and its incoming
calls three hundred thousand, which means
that for every morning, evening, or Sunday
edition, there […]

In Fig. 153 are shown the details of the circuit of this instrument.
This figure also includes a simplified circuit arrangement from which
the principles involved may be more readily understood. It is seen
that the primary of the induction coil and the transmitter are
included in series across the line. The secondary of the induction
coil, in series with […]

The ends of heavy bar shapes are often joined with a ‘V,’ or cleft, weld.
One bar end is shaped so that it is tapering on both sides and comes to a
broad edge like the end of a chisel. The other bar is heated to a forging
temperature and then slit open in a lengthwise direction so […]

telephone rates had everywhere been made too
low
In the effort to conciliate a hostile public, the
telephone rates had everywhere been made too
low. Hubbard had set a price of twenty dollars
a year, for the use of two telephones on a private
line; and when exchanges were started, the rate
was seldom more than three dollars a month.
There were deadheads […]

the next second it is only 1500 feet, and soon it comes to rest
The highest velocity we can give a rifle-ball is 2000 feet a second,
the next second it is only 1500 feet, and soon it comes to rest.
We cannot compact force enough behind a bit of lead to keep it
flying. But light flies unweariedly […]

are numbered 0000, 000, 00, 0, 1, 2, and so on up to 40
In the Brown and Sharpe gauge the sizes, beginning with the largest,
are numbered 0000, 000, 00, 0, 1, 2, and so on up to 40. Sizes larger
than about No. 16 B.&S. gauge are seldom used as magnet wire in
telephony, but for the […]