On 14/01/2019 23:50, Fredxx wrote:
On 14/01/2019 21:30, mm0fmf wrote:
On 14/01/2019 21:20, Fredxx wrote:
On 14/01/2019 20:27, mm0fmf wrote:
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?

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

Daniele


It's a Cathermin tube with an indium complex of +4.

Used in an Interocitor.

One presumes you must be old enough to recall the film "This Island
Earth"?

One of best, if not the best, 1950's SF film. It's fun and
entertaining whilst films like The Day The Earth Stood Still are too
serious. The original is excellent and the MST3000 skit is priceless.

Use your intensifier disk on YouTube to enjoy it if you don't have it
on DVD. ;-)

Has it stood the test of time like Forbidden Planet?

Forbidden Planet is a great film but is "stiff" in comparison and
whenever I see Leslie Nielson, even when he's young, I expect him to
break into a Frank Drebin Police Squad routine.