wieserfalke

@cccpresser Heatwaves going from one side to the other?

@hanser @cccpresser Yes and no, in theory it is an equilibrium, but you will most likely always have a flow from one side to the other, but if the arrows point in to the middle it would sugset that the center is the concentration point of hat. I think it also needs to be simple enought that one can still clearly see what it is, if it is small, so I think no arrowheads is beneficial.

@cccpresser

I think there are 3 main requirements for a symbol for this.

1. It needs to make it clear that it is a heat conductor but an electrical isolator
2. It has to be rotatable (ideally symmetry in vertical and horizontal axis)
3. It should be clear what it is, even if it is small