. Contributions to the Centennial Exhibition. )paratus. lma-in«. an immense truncated cone, a mammoth lamp-shade, withits concavity directed skyward. This apparatus is of copper,coated on the inside \\\W\ veiy thin silver-leaf. On thesmall of the truncated cone rests a copper cylinder,blackened on the outside, its vertical axis being identicalwith that of the cone. This cylindei, surrounded as it wereby a great collar, terminates above in a hemispherical cap,so that it looks like an enormous thimble, and is coveredwith a bell-glass of the same shape. This curious apparatus is nothing els
. Contributions to the Centennial Exhibition. )paratus. lma-in«. an immense truncated cone, a mammoth lamp-shade, withits concavity directed skyward. This apparatus is of copper,coated on the inside \\\W\ veiy thin silver-leaf. On thesmall of the truncated cone rests a copper cylinder,blackened on the outside, its vertical axis being identicalwith that of the cone. This cylindei, surrounded as it wereby a great collar, terminates above in a hemispherical cap,so that it looks like an enormous thimble, and is coveredwith a bell-glass of the same shape. This curious apparatus is nothing else but a solar receiver, 5G6 SUN rOWEB—TUE SOLAll ENGINE. chap. xlv. or, ill <,)tliei words, a boiler, in wliicli water is made to boilby the beat-rays of tlie suo. This steam-generator is designedto raise water to the boiling point and beyond, by meansof the solar rays, ^vhich are thio^vn upon the cylinder bythe silvered inner surface of the conical reflector. The boilerreceives water up to two-thirds of its capacity through afeed-pipe. A glass tube and a
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinventi, bookyear1876
