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210
The Fairy-Land of Science
·
Arabella B. Buckley
31
About
the
same
time
that
Newton
wrote,
a
Dutchman,
named
Huyghens,
suggested
that
light
comes
from
the
sun
in
tiny
waves,
travelling
across
space
much
in
the
same
way
as
ripples
travel
across
a
pond.
The
only
difficulty
was
to
explain
in
what
substance
these
waves
could
be
travelling:
not
through
water,
for
we
know
that
there
is
no
water
in
space
-
nor
through
air,
for
the
air
stops
at
a
comparatively
short
distance
from
our
earth.
There
must
then
be
something
filling
all
space
between
us
and
the
sun,
finer
than
either
water
or
air.
And
now
I
must
ask
you
to
use
all
you
imagination,
for
I
want
you
to
picture
to
yourselves
something
quite
as
invisible
as
the
Emperor's
new
clothes
in
Andersen's
fairy-tale,
only
with
this
difference,
that
our
invisible
something
is
very
active;
and
though
we
can
neither
see
it
nor
touch
it
we
know
it
by
its
effects.
You
must
imagine
a
fine
substance
filling
all
space
between
us
and
the
sun
and
the
starts.
A
substance
so
very
delicate
and
subtle,
that
not
only
is
it
invisible,
but
it
can
pass
through
solid
bodies
such
as
glass,
ice,
or
even
wood
or
brick
walls.
This
substance
we
call
"ether."
I
cannot
give
you
here
the
reasons
why
we
must
assume
that
it
is
throughout
all
space;
you
must
take
this
on
the
word
of
such
men
as
Sir
John
Herschel
or
Professor
Clerk-Maxwell,
until
you
can
study
the
question
for
yourselves.
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