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Article #805828
When you warm this black foil to over 28°it changes colour to red, yellow, green, blue, and violet.
At 34° and over it turns black once again. A thermal image, also called thermo chromatic effect, can be seen by laying the film onto your hand or any other object which gives off heat. For instance, you can also warm up a coin and observe the effects of metal.
Furthermore, you can try lots of other experiments!
Size: 105 x 148 mm with micro capsule LCD layer,
Each
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