Sunday, July 5, 2009
Extra qn. answers....
Since copper is a good conductor of heat, the space in between the copper gauze will have a higher temperature than the surroundings. The higher temperature inside is also due to the presence of the candle. When the surrounding temperature almost reach the ignition temperature of the methane, the methane in between the copper gauze will burn first. This is because the space inside the copper gauze have a slightly higher temperature. Thus, this will warn the miners to run out of the mine quickly and SAVE THEMSELVEs!!!!
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