Finally available, a high quality book of the original classic edition of The Microscope. It was previously published by other bona fide publishers, and is now, after many years, back in print.
This is a new and freshly published edition of this culturally important work by Andrew Ross, which is now, at last, again available to you.
Get the PDF and EPUB NOW as well. Included in your purchase you have The Microscope in EPUB AND PDF format to read on any tablet, eReader, desktop, laptop or smartphone simultaneous - Get it NOW.
Enjoy this classic work today. These selected paragraphs distill the contents and give you a quick look inside The Microscope:
Look inside the book:
“These facts have been established by careful experiment: they accord with every appearance in such combinations of the plano-convex glasses as have come under my notice, and may, I believe, be extended to this rule, that in general an achromatic object-glass, of which the inner surfaces are in contact, or nearly so, will have on one side of it two foci in its axis, for the rays proceeding from which it will be truly corrected at a moderate aperture; that for the space between these two points its spherical aberration will be over-corrected, and beyond them either way under-corrected. ...“If an object-glass is constructed as represented in Fig. 16, where the posterior combination P and the middle M have together an excess of negative aberration, and if this be corrected by the anterior combination A, having an excess of positive aberration, then this latter combination can be made to act more or less powerfully upon P and M, by making it approach to or recede from them; for when the three are in close contact, the distance of the object from the object-glass is greatest; and consequently the rays from the object are diverging from a point at a greater distance than when the combinations are separated; and as a lens bends the rays more, or acts with greater effect, the more distant the object is from which the rays diverge, the effect of the anterior combination A upon the other two, P and M, will vary with its distance from thence.