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 24
ge.)(43) Lenses form a great variety of images. Their sizeand position depend on the kind of lens and position of theobject. If in a convex lens the object is placed between theprincipal focus and the lens, the image will be virtual, erect andenlarged. If the object is further from the lens than… … W^ 20 MICROSCOPY. (4A) Fig. 11 shows the simplest form of the compoundmicroscope. a is the object glass or objective. The objectis placed a little beyond the principal focus, when a real, in-verted and enlarged image is formed at d, this real image isfurther magnified by the eye piece A. This…
Microscopy · Biology
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-267-172.webp)