Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 163
e rays which have passed through the lattershall form a luminous circle equal to it in size, at whateverdistance from the lens the screen may be held.—Even wherethe large bulls-eye condenser is provided, it is weH to havea smaUer condensing lens in addition; and this, which is usually a… … ing - screws, onefor the condens-ing lens, the otherfor the side-reflec-tor, are seen inthe hmV). Thiscondensing lens is sufficient by it- ^E^gE self for most ordi-nary purposes;and it may alsobe used to obtain Ordinary Condensing Lens. a greater concen-tration of the rays an-eady brought into…
Microscopy
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