Lab
Library
Journal
Shop
Sign in
to keep
Share image
1
281
Heroes of the Telegraph
·
John Munro
154
His
experimental
work
was
not
strikingly
original.
At
Birkenhead
he
made
some
accurate
measurements
of
the
electrical
properties
of
materials
used
in
submarine
cables.
Sir
William
Thomson
says
he
was
the
first
to
apply
the
absolute
methods
of
measurement
introduced
by
Gauss
and
Weber.
He
also
investigated
there
the
laws
of
electric
signals
in
submarine
cables.
As
Secretary
to
the
British
Association
Committee
on
Electrical
Standards
he
played
a
leading
part
in
providing
electricians
with
practical
standards
of
measurement.
His
Cantor
lectures
on
submarine
cables,
and
his
treatise
on
ELECTRICITY
AND
MAGNETISM,
published
in
1873,
were
notable
works
at
the
time,
and
contained
the
latest
development
of
their
subjects.
He
was
associated
with
Sir
William
Thomson
in
an
ingenious
'curb-key'
for
sending
signals
automatically
through
a
long
cable;
but
although
tried,
it
was
not
adopted.
His
most
important
invention
was
Telpherage,
a
means
of
transporting
goods
and
passengers
to
a
distance
by
electric
panniers
supported
on
a
wire
or
conductor,
which
supplied
them
with
electricity.
It
was
first
patented
in
1882,
and
Jenkin
spent
his
last
years
on
this
work,
expecting
great
results
from
it;
but
ere
the
first
public
line
was
opened
for
traffic
at
Glynde,
in
Sussex,
he
was
dead.
In
mechanical
engineering
his
graphical
methods
of
calculating
strains
in
bridges,
and
determining
the
efficiency
of
mechanism,
are
of
much
value.
The
latter,
which
is
based
on
Reulaux's
prior
work,
procured
him
the
honour
of
the
Keith
Gold
Medal
from
the
Royal
Society
of
Edinburgh.
Another
successful
work
of
his
was
the
founding
of
the
Sanitary
Protection
Association,
for
the
supervision
of
houses
with
regard
to
health.
Marker
Marker
Fine marker
White-out
Fine white-out
Circle
Paint
Unmarker
Hand
Scalpel
Dice
Sieve
Purify
Undo
Redo
Start over
