(It is easy to see that the radius of the bright spot is of the same order of magnitude.) The experiment succeeds in a dark room of the length above mentioned, with a threepenny bit (supported by three threads) as obstacle, the origin of light being a small needle hole in a plate of tin, through which the sun's rays shine horizontally after reflection from an external mirror. [Please select]
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Parsons stopped at a tobacconist's shop, and, giving me a half-crown, told me to buy a threepenny packet of cigarettes. [Please select]
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"If you've anything in the shape of a really good threepenny cigar, I can do with it." [Please select]
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They shake out the threepenny bits and sixpences and coax out the pennies with the blade of a knife. [Please select]
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At first they were about as large as a threepenny-piece, but ended by measuring more than two inches across. [Please select]
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The waiter said he had a truly splendid threepenny; and Dale, enjoying it, talked to the waiter. [Please select]
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"Have we ever swept our own walks, except that once, long ago, when the German women came round with threepenny brooms." [Please select]
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