Copper Spring
Description: A helical coil made from copper is frozen in liquid nitrogen and behaves like a spring. It becomes malleable when returned to room temperature.
Source: UW Card Catalog
Year: N/A Vol: N/A Page: N/A
Keywords: Copper coil, Liquid Nitrogen, Weight, Temperature, Material properties
Rating: 
Hazard: Some
- Cryogenic burn hazard
- Asphyxiation hazard
- Implosion hazard
Effectiveness: Average
- Mild effects are seen by audience
- Good reliability
- Results are observable with guidance
- Time to result is medium
- Somewhat connected to course material
Difficulty: Medium
- Demos at non-standard conditions
- Some careful manipulations required
- Use of vacuum applied glassware
- Simple procedures
Safety Precautions:
- Cryogenic gloves required
- Eye protection required
- Perform in a well-ventilated area
- Temperature resistant surface recommended
Class: Intermolecular Forces, Properties of Solids, Crystal structure
Division: General
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