Ingenious: by melting the wax, it spreads on the bar in the direction of thermal conduction
Cognitive objective:
Principle of thermal conduction in a metal.

Activity:
Observe heat transfer in a metal bar with wax pellets and a thermocouple (temperature capture up to 1000° C).

Composition :

• Two iron bars of 50cm
  
•   100 beeswax pellets (pot of 50ml)
  
• A thermocouple
  
• Instructions
  Necessary material:
  
• Hotplate
  
• Heat resistant gloves
  
• Paper, pencil and ruler