Safety check
Heat proof mat Yes
Lab coat Yes
Safety glasses Yes ----- but not to protect your hair!!!!!!!!!!!!!!!
Use the collar to change the size of the air hole and hence the nature of the flame
They put the copper wire into the flame to see which part was hottest
The place where the copper glowed most was the hottest
Some even managed to melt the end of the wire
This proved the hottest part was just above the blue cone in the roaring flame
