instance, the brislit svu-faco of mercnrv in the bulb of J12 SCIKMK IKIMKKS. t- ii:<iM the thermom(.t.i-r ami look into it. \{>u will llirn^see u Vfiy .sumll distorted image of yoiivsclf, andindeed of the whole room, only the far away paifs ofthe room will be exceedingly t^mall. Take again a… … Fig. ai. hand in the other focus, and you will soon find it toohot. Indeed, if you had two large reflectors of thiskind and bad a fire burning in the focus of the one,you might cook a beef-steak in that of the other,even though the two reflectors were fifty feet apart.The reason is that the rays of…
Physics
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