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Free delivery for orders over $150 except DG chemicals* & Rural areas.
leslies cube

LESLIES CUBE

$ 28.50 excl. GST

•  This Leslies Cube comprises a tin plate cube with 130mm sides.
•  Each of the four vertical sides of the cube has a different surface comprising:
– 1x blackened  |  1x roughened  |  1x polished  |  1x varnished.
•  An opening at the top of the cube enables it to be filled with water almost to the top and then heated to boiling point over a bunsen burner flame.
•  The relative radiant heat output from each of the four faces of the cube can then be measured by using a thermometer or with infra red sensors.

In stock (can be backordered)

SKU: EO-PH0411A Categories: , ,

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LESLIES CUBE

(Wikipedia excerpt ..."Leslie's cube is a device used in the measurement or demonstration of the variations in thermal radiation emitted from different surfaces at the same temperature.
Device It was devised in 1804 by John Leslie (1766–1832), a Scottish mathematician and physicist.[1] In the version of the experiment described by John Tyndall in the late 1800s,[2] one of the cube's vertical sides is coated with a layer of gold, another with a layer of silver, a third with a layer of copper, while the fourth side is coated with a varnish of isinglass.

The cube is made from a solid block of metal with a central cavity. In use, the cavity was filled with hot water; the entire cube has essentially the same temperature as the water. The thermal detector (on the far right in the figure) showed much greater emission from the side with varnish than from any of the other three sides.  ...")

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