Stewart, Balfour, 1828-1887 · Toronto : James Campbell · leaf 103
there see a very small 94 SCIENCE PRIMERS. [light from distorted image of yourself, and indeed of the wholeroom, only the far away parts of the room will beexceedingly small. Take again a couple of bright concave mirrors likethose of fig. 22, only, instead of putting a watch atthe focus of the one… … Fig. Bl-and had a fire burning in the focus of the one, you mightcook a beef-steak in that of the other, even though thetwo reflectors were fifty feet apart. The reason is thatthe rays of heat from the fire in the one focus strike themirror near it, and are reflected from it in lines thatbring them…
Physics
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