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Banned on April 7, 2007 Registered Member #277
Joined: Fri Mar 03 2006, 10:15AM
Location: Florida
Posts: 157
I've been experimenting with high power neo-magnets and diamagnetic materials and liquids. I was surprised to discover that when I placed a strong neo-mag next to a candle flame, the flame behaves as it were diamagnetic, ie: the flame deflects away from the neo-mag regardless of which pole is presented. Other non-magnetic materials produced no deflection. I've goggled with little luck trying to find more info about why the flame behaves this way in the presence of strong magnetic field. Any speculations? CM
Registered Member #14
Joined: Thu Feb 02 2006, 01:04PM
Location: Prato/italy
Posts: 383
Hmm, maybe the black carbon particulate is repelled itself. Or being the flame composed by conductive gases moving upwards, some faraday current is induced causing repulsion? I've to try it
Registered Member #69
Joined: Thu Feb 09 2006, 07:42AM
Location:
Posts: 116
If the candle flame is conductive (and I think it is since it's partly ionized/plasmafied) then it would repel from a magnetic field. It is flowing upwards fairly rapidly so this movement would generate eddy currents and repelling fields.
Registered Member #8
Joined: Thu Feb 02 2006, 04:34AM
Location: Harlowton, MT, United States
Posts: 214
Maybe it's because of diamagnetic graphite particles in the flame. Also remember neodymium magnets are easily demagnetized by heat. Samarium cobalt would be more suitable for such experimenting, you wouldn't want to hurt them.
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Put a non magnetised metal bar next to the flame and it should do the same. I beleive it is a simple thermal effect as outlined above. Or use an electrmagnet switched on and off.
While magnetofluid dynamics would potentially give a the observed effect with a magnet, the effect should be absolutely tiny.
Registered Member #193
Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
Just to throw another idea into the mix, a flame has a low oxygen content compared to the air round it. Oxygen is very paramagnetic so removing it would leave a relatively diamagnetic material. Having said that, I just tried with a meths burner and a couple of disk drive magnets and I didn't see any effect.
Banned on April 7, 2007 Registered Member #277
Joined: Fri Mar 03 2006, 10:15AM
Location: Florida
Posts: 157
Just tested it again positioning various materials close to the candle flame, including a cold non-magnatized galvinized hammer, etc. The candle flame repulsion effect seems to manifest only when I use the ultra-strong large neo-mags. CM
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
I tried with a neo magnet and a piece of aluminium. The flame seemed to shrink away from both about equally. I think it's due to cooling or disturbance of the air flow, rather than magnetism.
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FLAME DEFLECTED by Permanent Magnet - REASON FOUND BY TOKYO SCIENTISTS
