Identifier:
T: H - 042
Concept Overview:
- Cooling by Evaporation
- Triple Point (Solid, Liquid, Gas existing simultaneously)
Lecturer Procedure
Step(s) to Follow
- Remove black stopper from top of clear dewar.
- Use funnel to fill dewar approximately 1/4 of the way with liquid nitrogen (there is a line marked for your convenience)
- Replace black stopper
- Turn on switch to activate vacuum pump
- After nitrogen snow forms, turn off vacuum
Expected Result
Nitrogen will boil, gradually becoming cooler.
Solid nitrogen will form (looking like snow) on top of the liquid
A camera can be set up to zoom in on the snow by request
Tutorial:
Set-up Instructions for T: H - 42
Transcript:
There are no spoken words with this recording.