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281
Heroes of the Telegraph
·
John Munro
259
In
1819,
Gauss
measured
a
degree
of
latitude
between
Gottingen
and
Altona.
In
geodesy
he
invented
the
heliotrope,
by
which
the
sunlight
reflected
from
a
mirror
is
used
as
a
"sight"
for
the
theodolite
at
a
great
distance.
Through
Professor
William
Weber
he
was
introduced
to
the
science
of
electro-magnetism,
and
they
devised
an
experimental
telegraph,
chiefly
for
sending
time
signals,
between
the
Observatory
and
the
Physical
Cabinet
of
the
University.
The
mirror
receiving
instrument
employed
was
the
heavy
prototype
of
the
delicate
reflecting
galvanometer
of
Sir
William
Thomson.
In
1834
messages
were
transmitted
through
the
line
in
presence
of
H.R.H.
the
Duke
of
Cambridge;
but
it
was
hardly
fitted
for
general
use.
In
1883
(?)
he
published
an
absolute
system
of
magnetic
measurements.
On
July
16,
1849,
the
jubilee
of
Gauss
was
celebrated
at
the
University;
the
famous
Jacobi,
Miller
of
Cambridge,
and
others,
taking
part
in
it.
After
this
he
completed
several
works
already
begun,
read
a
great
deal
of
German
and
foreign
literature,
and
visited
the
Museum
daily
between
eleven
and
one
o'clock.
In
the
winters
of
1854-5
Gauss
complained
of
his
declining
health,
and
on
the
morning
of
February
23,
1855,
about
five
minutes
past
one
o'clock,
he
breathed
his
last.
He
was
laid
on
a
bed
of
laurels,
and
buried
by
his
friends.
A
granite
pillar
marks
his
resting-place
at
Gottingen.
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