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281
Heroes of the Telegraph
·
John Munro
25
The
'pseudoscope'
(Wheatstone
was
partial
to
exotic
forms
of
speech)
was
introduced
by
its
professor
in
1850,
and
is
in
some
sort
the
reverse
of
the
stereoscope,
since
it
causes
a
solid
object
to
seem
hollow,
and
a
nearer
one
to
be
farther
off;
thus,
a
bust
appears
to
be
a
mask,
and
a
tree
growing
outside
of
a
window
looks
as
if
it
were
growing
inside
the
room.
On
November
26,
1840,
he
exhibited
his
electro-magnetic
clock
in
the
library
of
the
Royal
Society,
and
propounded
a
plan
for
distributing
the
correct
time
from
a
standard
clock
to
a
number
of
local
timepieces.
The
circuits
of
these
were
to
be
electrified
by
a
key
or
contact-maker
actuated
by
the
arbour
of
the
standard,
and
their
hands
corrected
by
electro-magnetism.
The
following
January
Alexander
Bain
took
out
a
patent
for
an
electro-magnetic
clock,
and
he
subsequently
charged
Wheatstone
with
appropriating
his
ideas.
It
appears
that
Bain
worked
as
a
mechanist
to
Wheatstone
from
August
to
December,
1840,
and
he
asserted
that
he
had
communicated
the
idea
of
an
electric
clock
to
Wheatstone
during
that
period;
but
Wheatstone
maintained
that
he
had
experimented
in
that
direction
during
May.
Bain
further
accused
Wheatstone
of
stealing
his
idea
of
the
electro-magnetic
printing
telegraph;
but
Wheatstone
showed
that
the
instrument
was
only
a
modification
of
his
own
electro-magnetic
telegraph.
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