Recent content by ADrake

The greenish colored glass contains uranium. I can't demonstrate these particular ones as they were meant to be used but can use online images and use the newer single gas bulbs to show the spectral lines when we discuss electron motion and emission spectra. I for now, I'll demonstrate how our...

Hello everyone & thank you for letting me join your community. I am a high school science teacher in Minnesota, USA. I took over the classroom of a former physics/math teacher and have found all kinds of cool but old equipment. I primarily teach 9th grade physical science this year but that...

Thank you. Sorry it took so long to get this updated! The first week of classes gets busy.

Honestly, mostly I'm just curious. However, if I need to dispose of them properly I'll need to know. I intend to use them to demonstrate radioactivity for my 9th graders this year. If we can safely keep them at the school, I'll probably continue to use them for earth science and astronomy as...

I've been searching for a way to ID the gases in a set of old (1964-1965), unlabeled Geissler tubes at our school. We have no good way of trying to light them anymore. They are in the original, numbered cardboard tubes but have no other identifiers. It seems like we should be able to match...