Thermodynamics > Heat and the First Law
 DCS# 4B50.10
FOUR THERMOS BOTTLES
APPARATUS
four thermos bottles (the smaller set)
 101-01-B
four temperature probes
 101-05-D6
LabPro interface
 107-02-B3
laptop with LoggerPro
 206
teapot
 101-12-D

DESCRIPTION
The four thermoses have different constructions: 
1.  unsilvered, no vacuum
2.  silvered, no vacuum
3.  unsilvered, evacuated
4.  silvered, evacuated

Fill each with about 250 ml of hot water at the same temperature and monitor the temperatures over time.

NOTES

Fill the thermoses on the electronic balance, setting each thermos in a beaker with towels on the bottom. Tare the balance, pour in the water using a funnel.  Wear goggles.