Beer Signs 01

The neon sign is an
evolution of the
earlier Geissler tube
(also called a
Crookes tube),
which is a glass tube
for demonstrating
the principles of
electrical discharge.
Neon signs are
produced by the
craft of bending
glass tubing
into shapes.
A worker skilled
in this craft
is known as a
glass bender,neon
or tube bender.

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wikipedia.org