blowing

[saraho]

why do blow on a match to put the fire out, but blow on a fire to make it burn?

[Dacetine]

I think this is because fire requires three things to continue to burn: a fuel source, oxygen and a heat source. By blowing vigorously on the match you cool it and remove the heat source thereby extinguishing it. Blowing on a fire does not extinguish it because the fire is too large, it does, however, add more oxygen and so makes it burn more.

[Space]

I suppose that if you could blow on a fire strongly enough, you could put the fire out...
The wind has got to be in proportion with the fire.

[c00ky83]

Blowing on a match puts it out because exhaled breath contains more carbon dioxide.  This is what puts flames out.

 

Don't think blowing on fires makes them burn - if you FAN them they burn better, as this gives them more oxygen.

 

Did you never do the thing at school with splints?  Put a lit one in CO2 and it goes out, put a glowing one in O2 and it lights!

[choda boy]

See you at the institute on wednesday.....

[RipedForskin]

Why dont you try an experiment saraho hold the match and dont blow, then stick your head in a fire and dont blow that way you have a base line to work from. Tell us how your test went then we can go to the next step which will be stick tha match up your a#s# and see what the difference in gases do. Then try the fire.