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Each fuel has a flash point. Below that point, the fumes are not dense enough to sustain a flame. You can find a table here: http://en.wikipedia.org/wiki/Flash_point And a nice video here: http://w...
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Each fuel has a flash point. Below that point, the fumes are not dense enough to sustain a flame. You can find a table here: http://en.wikipedia.org/wiki/Flash_point And a nice video here: http://w...