Last Updated：2025/12/30
Sentence
The
tubes
being
filled
with
distilled
water,
the
light
from
an
electric
lamp
was
directed
toward
the
central
glass
of
the
refractometer
and
the
latter
adjusted
by
screws
till
the
light
passed
centrally
down
both
tubes,
and
then
the
right
angled
prism
at
the
further
end
adjusted
till
the
light
returned
and
was
reflected
into
the
telescope,
where
generally
two
images
were
observed.
Quizzes for review
The tubes being filled with distilled water, the light from an electric lamp was directed toward the central glass of the refractometer and the latter adjusted by screws till the light passed centrally down both tubes, and then the right angled prism at the further end adjusted till the light returned and was reflected into the telescope, where generally two images were observed.
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