Last Updated：2025/12/19
Sentence
Its
[the
article's]
object
is
to
furnish
a
rule
for
determining
the
number
of
distinct
signals
which
can
be
made
by
any
semaphore,
whatever
be
the
number
of
arms
or
indicators,
of
whatever
be
the
number
of
positions
of
each
arm.
In
the
Cyclopædia
of
Rees,
the
number
of
signals
which
the
semaphores
of
the
line
of
communication
between
Paris
and
Landau
were
capable
of
making,
is
stated
to
be
823,543,
which
is
no
less
than
1,274,608
fewer
than
the
real
number,
an
error
not
arising
from
the
press,
but
from
the
principle
of
computation.
Quizzes for review
Its [the article's] object is to furnish a rule for determining the number of distinct signals which can be made by any semaphore, whatever be the number of arms or indicators, of whatever be the number of positions of each arm. In the Cyclopædia of Rees, the number of signals which the semaphores of the line of communication between Paris and Landau were capable of making, is stated to be 823,543, which is no less than 1,274,608 fewer than the real number, an error not arising from the press, but from the principle of computation.
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