I let the thing warm up and it looks like the red coil is only the heater. After about 5 min it is now a nice warm yellow glow in the whole tube. It must be a sodium lamp! Thanks again. I just didn't leave it on long enough, kind of afraid it might blow up though. It looks pretty cool...
Thanks, you could be right. There is a clip to put some sort of slide over the square opening I suppose. Maybe a diffraction grating? The lamp is very dim and takes a few seconds to warm up and is definitely reddish almost like a tiny toaster element inside a bulb.
I have found these. gathering dust on the shelf in the lab. pictures are attached. first item is some sort of lamp that glows red inside a metal tube. the second item is a rack with a tuning fork clamped to it with at sharp metal prong attached to one of the tuning fork tines anybody out...
Help. We are cleaning out our lab and under the dust are all kinds of old lab gear which look very cool and expensive but can't figure out what they are for. Only clue is Stansi Chicago on some of them. Is there an old catalog or website I can go to so I can identify stuff? If I posted...