<ul> <li>The deluxe Charles' Law Apparatus is used to study the degree of expansion that is directly proportional to the increase in temperature.</li> <li>This Charles' Law Apparatus enables students to precisely determine the volume coefficient of expansion of air throughout a temperature range.</li> <li>By adding or draining the solution (though a stopclip located at the bottom of the tube), the solution in the tubes can be maintained at even levels while the temperature in the water jacket is varied.</li> <li>Temperature is changed by adding hot water though a funnel at the top of the jacket, as cooler water is drained from below though a rubber tube.</li> </ul>