Primary microscopy and biology. A text book for the use of students in high schools, normal schools and academies (1890)
Schneider, Albert, 1863- [from old catalog] · Fairbury, Ill., The Blade printing office · leaf 14
he mirror. MICROSCOPY. 9 A C and a c are equal because they are two perpendic-ulars between two parallel lines, B6 = b6 and A E = aE, therefore by substitution and subtraction B C = b c; theangles AC B and a c b are equal because they are bothright angles, hence A B = a b and B A C — b a c; thatis,… … CONJUGATE FOCI. (14) When rays which radiate from a point are reflect-ed by a concave or convex mirror they are again brought toa real or apparent point. These points are interchangableand are called conjugate foci. If the radius of the mirror and the distance of one focusare given the distance of…
Microscopy · Biology
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