Rational recreations, in which the principles of numbers and natural philosophy are clearly and copiously elucidated, by a series of easy, entertaining, interesting experiments. Among which are all those commonly performed with the cards (1794)
Hooper, W. (William), fl. 1770 · London : Printed for B. Law and son, and G. G. and J. Robinson · leaf 33
ABC Iv Y JLo.i/^ .r..,/^. VclJI. /I 1 … \W^ RECREATIONS. 9 a telefcope, (Plate II. Fig. i.) and let thembe fo placed that the focus of each maycoincide in the point E. Siippofe OI to bea far diftant object, whofe rays are there-fore to be conlidered as parallel when theycome totheglafs, (aphorifm 5. page 3.) thetwo rays O A, and IB,…
Scientific recreations · Card games
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