Putnam, J. Pickering (John Pickering), 1847-1917 · Boston, Ticknor and Co. · leaf 67
uppose a tire to be at F in Fig. 35, in an ordinary fireplace, onlytwo of the rays represented by dotted lines as striking the jamb would liereflected into the room, the rest being thrown upon the opposite side, orupon the fuel <»r hack of the fireplace, or up the flue. With the curvedback,… … Fig. 34. Gaugers Ventilating Fireplace. THE OPEX FIREPLACE. ~--=J* F any ray falling from the fire or parabolic focus F or F, Fig. 36, and striking the back of the fireplace, will come into the room. The same will happen to any ray coming from any part of the fire intermediate between the two foci…
Fireplaces
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