• Single large (50mm x 150mm) sheet of thermocolour material and 1m of resistance wire
• Sheet changes colour when heated, turns bright blue above 27°C (human contact or similar)
• Create bright handprints or leave messages that disappear as they cool
• Demonstrate thermal conductivity and dissipation as well as the principles of electric (resistance based) heaters
• Comes with an instruction pamphlet on how to make a simple ‘LCD’ screenWhat can you do with Thermocolour sheets?
A great learning aid for children, the thermochromic sheet (IT9 002) allows you to create bright messages or handprints that disappear as they cool. The sheet is black at temperatures lower than 27°C. Room temperature is usually between 18-21°C while human contact such as hands, fingers and breath is warm enough to cause the sheet to change colour to a bright blue. The Thermocolour material comes as a 50mm x 150mm sheet but works just as well in small sections.
What does the resistance wire add?
Using the resistance wire included and a small current you can demonstrate an advertising display. The thermochromics sheet will change colour following the wire allowing you to create pictures and messages that appear only when a charge is used.
What can you learn?
The self-adhesive sheet is printed with thermochromic liquid crystal ink that changes colour with heat applied. This could be used to demonstrate thermal conductivity or convection, heat dissipation and how liquid crystals work. With the addition of the resistance wire you can show how resistance creates heat and demonstrating how some electric heaters work. The sheet and wire could be used to make temperature indicators, jewellery or advertising screens. The pack comes with an information pamphlet with instructions on how to make a simple ‘LCD’ display.