4a40.30: RUBBER AT LN TEMPERATURE

PURPOSE: To demonstrate how a normally elastic material at room temperature becomes rigid at very low temperatures.

DESCRIPTION: Dip the rubber hose into liquid nitrogen, then use the hammer to break it up into a zillion pieces.

SUGGESTIONS: Handle cold hose with tongs or gloves. Wear goggles for safety.

REFERENCES:

EQUIPMENT: Dewar with liquid nitrogen, rubber hose, tongs, glove and hammer.

SETUP TIME: 5 min.


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