Heat & Thermodynamics

Reusable Thermo-sensitive Cloth


【Product Description】

This specially designed cloth repeatedly changes its color from dark blue to pink, and vice versa, with a temperature threshold of 30℃.

【Overall Advantages to Users】

  • Heat conduction/convection can be visualized by the color change in the cloth that occurs when heat flows through the medium.
  • The product can detect subtle thermal changes caused by, for example, steam rising from hot water in a cup thanks to the high thermal sensitivity.


  • Heat convection
  • Heat conduction
  • Heat retention and radiation




[To teachers]

  • Color change in the cloth helps students better understand how heat conducts and/or convects in the medium like air.
  • The cloth is highly responsive to a thermal change in the medium thanks to its low heat capacity.

[To students]

  • Possible to visually perceive the heat slowly transferring/diffusing in a medium as a color change in the cloth.
  • Material: Polyester
  • Color change occurs at around 30℃ (from dark blue to pink)
  • Size: 210 mm x 220 mm (x 5 pcs)

Teacher's Resources

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