Beck, Conrad, 1864- · London, R. & J. Beck, Ltd. · leaf 25
trate the efiect on the object,one should examine the appearance ofa fairly thick piece of wood which hasfine holes drilled in it: light from oneside would not pass through and wouldnot reach the eye. The holes will notbe visible unless the light is passingthrough them centrally. The effect ofan… … Oblique light. Direct light,Fig. 10. A SIMPLE DESCRIPTION OF THE MICROSCOPE 23 the image is a fine bundle thrown to the edge of the object glass,so that the object glass acts as if it had only a pinhole apertureat one side, and is consequently no better for depicting detail thanthe early pinhole…
Microscopy
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