. The story of my boyhood and youth . that, he objected,would draw still bigger bothersome tramplingcrowds about the place, for who ever heard ofanything so queer as a big clock on the top of atree? So I had to lay aside its big wheels andcams and rest content with the pleasure of in-venting it, and looking at it in my mind andlistening to the deep solemn throbbing of itslong two-second pendulum with its two oldaxes back to back for the bob. One of my inventions was a large thermome-ter made of an iron rod, about three feet longand five eighths of an inch in diameter, thathad formed part of a
. The story of my boyhood and youth . that, he objected,would draw still bigger bothersome tramplingcrowds about the place, for who ever heard ofanything so queer as a big clock on the top of atree? So I had to lay aside its big wheels andcams and rest content with the pleasure of in-venting it, and looking at it in my mind andlistening to the deep solemn throbbing of itslong two-second pendulum with its two oldaxes back to back for the bob. One of my inventions was a large thermome-ter made of an iron rod, about three feet longand five eighths of an inch in diameter, thathad formed part of a wagon-box. The expan-sion and contraction of this rod was multipliedby a series of levers made of strips of hoop pressure of the rod against the levers waskept constant by a small counterweight, sothat the slightest change in the length of therod was instantly shown on a dial about threefeet wide multiplied about thirty-two thousandtimes. The zero-point was gained by packingthe rod in wet snow. The scale was so large [ 258 ]. THERMOMETER
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfrontie, bookyear1913
