Insulation (Dewar Flasks) (4B50.10)

Description:

Four dewar flasks (thermos bottles) are filled with boiling water and a thermocouple is placed in each. Each flask has a different degree of insulation, and these are (from worst to best): unsilvered without vacuum between the walls, silvered without vacuum, unsilvered with vacuum, and silvered with vacuum. The water temperature is measured throughout the class period and compared to an uninsulated beaker. Temperatures are collected and displayed via a LabVIEW program and a laptop plugged into the projector.

Procedure or Operation Notes:

Updated procedures coming soon...