Wright, Mark R., 1854- · London : Longmans · leaf 96
way. Eclipse.—The sun is larger, and the moon is smaller, thanthe earth. When the umbra of the moon falls on the earth, aneye placed in the umbra will be unable to see any part of thesun, and total eclipse is produced. Where ^& penumbra falls,there will be partial eclipse ; part of the sun will… … Fig. 61. appearance of the lamp through pinholes from behind the screen ;note particularly the crescent shape of the part seen. Move thescreen away from S ; beyond C all will be penumbra. A person inthis penumbra will see a black circle, A, surrounded by a brightring; an annular eclipse is…
Physics
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