On 14/01/2019 07:12, D.M. Procida wrote:
I bought a lightbulb (and a ceramic holder and rotary lightswitch) in a
second-hand shop yesterday. They had many beautiful items taken from an
old electronics teaching laboratory - all brass, steel, ceramic and
wood.

The lightbulb:
https://www.dropbox.com/s/qw0vnqdtvemf0ld/lightbulb.jpg?dl=0.

It's about 10cm tall, and has an Edison screw. The filament loops up and
down the bulb in six lengths. It's made by Osram, but there are o other
readable markings on it.

Any idea what the purpose of a lightbulb like this might be?

"Let There Be Light"

Looks to be an old cylinder filament bulb - c.f. modern versions such as

https://www.hollowaysofludlow.com/sh..._filament_bulb


I'm tempted to run it at low voltage to see what it looks like
illuminated, but I'd hate to damage the filament.



--
Robin
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