Spirals for heat radiation, set

To demonstrate the heat flow of gases, a spiral is placed at an angle on the needle and is set in rotation by rising hot air;
5 sheets of paper with recorded spiral
Dimensions: approx. 60 x 60 mm each
Mass: approx. 2 g

additionally required:
1 x P2610-2A Needles steel, right angled
1 x P7502-1A Pair of scissors