WEBVTT

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Now we are going to conduct an experiment with heat conduction.

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Here we have a metal block with a thermometer inside.

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This is an infrared camera that will take pictures.

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And here we have a computer that logs the temperatures measured by these thermometers.

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And then IĄŻm going to get a warm...

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metal block that I place on top of this one.

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And then we will see...

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Here in the IR camera, we can actually see the temperature, how it changes.

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And then we will measure it.

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So now IĄŻm going to get the hot block. ItĄŻs sitting here on a hot plate.

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Now IĄŻll pick up the hot metal block with this cloth

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Then I start the IR logging. And the temperature sensor logging.

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And then I start the video camera and insert the temperature sensor.

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There you can clearly see the hot metal block on top of the cold metal block.

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I will insulate a bit, so we don't lose too much heat on the sides.

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Now you see that the lower metal block is starting to become warmer.

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It has now perhaps become as warm as my finger.

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It was 20 degrees to begin with.

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And you see here that today the temperature rose very quickly.

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And so now, slowly, slowly, the temperature on the lower metal block is rising.

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While the temperature slowly decreases on the upper one.

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We just have to let this log by itself, and then we can use the data.