PURPOSE: To measure coefficients of linear expansion.

DESCRIPTION: A cup rests on a fixed platform with the rim of the cup under the feeler gauge. Pour liquid nitrogen into the cup to make it contract and read the length contraction (ha! ha!) on the gauge.

SUGGESTIONS:

REFERENCES: (PIRA unknown.)

EQUIPMENT: Various cups (some shown in photograph), labjack, dial micrometer on stand, and glove for handling cold cups (not shown in photograph).

SETUP TIME: 5 min.