| 摘要 |
A vacuum container equipped with a vacuum gauge, a thermometer, and a valve are provided to effectively carry out a Boyle's law experiment, a Boyle-Charles' law experiment, a gas/liquid characteristic observing experiment, and a cloud generation observing experiment. The vacuum container(20,30) is equipped with measuring instruments such as a vacuum gauge(40) and a thermometer, an insertion hole(70) of a thermometer probe, and a valve(50). An extended pipe(60) is attached to the valve. An injector connected to the extended pipe or the end of the valve or a tool or container for changing the volume of inner gas of the vacuum container is attached on the vacuum container. The vacuum gauge, the thermometer, and the valve are used individually or together.
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