Method and device for teaching the comparative measurement of heat flow

A method for teaching the comparative measurement of heat flow which comprises:

• (a) placing a first receiving sample into a first insulating means in the first chamber of an open topped container having means for locating an internal partition wherein a partition is engaged to divide the container into identical chambers,
• (b) placing a second identical receiving sample in a second identical insulating means in a second identical chamber of the container,
• (c) selectively exposing the receiving samples to a source of radiant energy, and
• (d) measuring the temperature changes in the receiving samples to determine the relative heat flow to each receiving sample.

A method for teaching the comparative measurement of the heat transmitting properties of materials comprising:

• (a) holding a first sample so that it completely covers the open top of a first chamber of a container constructed of material of relatively low heat conductivity and having a plurality of identical, open-topped chambers,
• (b) holding at least one other sample so that it completely covers the open top of another identical chamber of the container,
• (c) exposing the container and its contents at a selected angle to the rays of the sun, and
• (d) measuring the temperature changes within the identical chambers whereby the relative heat transmitting properties of the sample materials in response to direct solar radiation may be observed.

An educational kit for teaching the characteristics of heat flow comprising:

• (a) a rectangular box including two sides, two end walls and a base, the box having partition receiving means formed therein to receive a partition parallel to and midway between the end walls, the box also having insert ports formed therein, each adapted to receive a thermometer therethrough,
• (b) closure means to close the top of the box, the closure means also having insert ports formed therein,
• (c) heating means positioned in the box on a first side of the partition receiving means,
• (d) a pair of thermometers adapted to be inserted through a pair of the insert ports so as to be positioned on opposite sides of the partition receiving means, and
• (e) a set of partitions of varying heat transmissivity, each adapted to be selectively inserted into the partition receiving means in the box to thermally partition the box into two chambers.