Last Updated：2025/12/31
Sentence
Jacob’s
Ladder
displays
are
sometimes
found
in
science
museums
and
centers.
In
demonstrations,
an
electric
spark
jumps
between
two
parallel
wires
when
electrons
fed
into
one
of
the
wires
repel
each
other,
heating
up
the
surrounding
air
so
the
spark
rises
with
the
hot
air
before
dying
at
the
top
of
the
wires.
Quizzes for review
Jacob’s Ladder displays are sometimes found in science museums and centers. In demonstrations, an electric spark jumps between two parallel wires when electrons fed into one of the wires repel each other, heating up the surrounding air so the spark rises with the hot air before dying at the top of the wires.
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