[Stoves] Stoves Digest, Vol 11, Issue 7

[Crispin Pemberton-Pigott]

It is also a good trick to show Alex English's trick with a glass tube over
the candle flame, ultimately creating an almost invisible flame. He reported
this here a few months ago, with pics.

Regards
Crispin

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James Robinson wants a practical thing for children.  I use a candle to get
the essential elements across - it is all there, the unburned fuel near the
wick, the combustion with burning of the carbon giving incandescence, the
incomplete combustion (try running the flame across a slanted, cold plate),
the radiant heat melting the wax, even the wick bending out of the flame and
the tip glowing, so that you no longer need to trim the wick on a modern
candle. By the time you have been through capillary action, the 90 minutes
are up.

Philip Lloyd