. Elementary physics and chemistry: second stage . REASO>^S AND RESLLTS. Some familiar combustible bodies.—Candles are not now commonly used for lighting our houses. Sometimes lamps are employed, and in large rooms ordinary coal-gas is usually the sub- stance which is burnt. As every boy knows, lamps are supplied with oil. This oil rises up the wick of the lamp in the same way as water does up cotton threads, and this has already been studied. At the end of the wick the oil is burnt. Gas which is supphed to our houses in pipes, is made by distilling coal in iron retorts. In this way the gas
. Elementary physics and chemistry: second stage . REASO>^S AND RESLLTS. Some familiar combustible bodies.—Candles are not now commonly used for lighting our houses. Sometimes lamps are employed, and in large rooms ordinary coal-gas is usually the sub- stance which is burnt. As every boy knows, lamps are supplied with oil. This oil rises up the wick of the lamp in the same way as water does up cotton threads, and this has already been studied. At the end of the wick the oil is burnt. Gas which is supphed to our houses in pipes, is made by distilling coal in iron retorts. In this way the gas is driven out of the coal and collected in the large cylindrical holders of metal, always seen at a gasworks, and called gasometers. It is from these gasometers that the gas passes into the gas pipes and so reaches the burners, where by turning on the tap it can be lighted and
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1900
