I hope you find this bit helpful...
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Saturday, November 2, 2019
Lost Secrets, continued — Ideal Magnification
This post extends the prior discussion into the realm of the User's Vision, showing how a proper choice of Eyepiece Magnification is necessary for optimum visual performance:
I hope you find this bit helpful...
I hope you find this bit helpful...
Tuesday, October 29, 2019
A New Direction — Lost Secrets of Microscopy!
With this post we shift this Blog into a new dieection – a series examining "lost" historical concepts ("secrets") in the light of modern microscopy needs and practice...
This first posting of this new series covers the "Sharpness Index" — a simple means for comparing the relative performance potential for objectives of differing Magnification and NA.
The method presented is more inclusive of important optical parameters (e.g: both Magnifiction and NA) and is thus potentially more useful than the simpler "Rayleigh criterion," which has become so over-used and mis-applied these days. ("Rayleigh," and more modern alternatives, will be covered in a future post.)
As before, the document itself is presented as a .pdf file, to facilitate downloading, printing and off-line archiving.
I hope you enjoy this information and benefit from it...
This first posting of this new series covers the "Sharpness Index" — a simple means for comparing the relative performance potential for objectives of differing Magnification and NA.
The method presented is more inclusive of important optical parameters (e.g: both Magnifiction and NA) and is thus potentially more useful than the simpler "Rayleigh criterion," which has become so over-used and mis-applied these days. ("Rayleigh," and more modern alternatives, will be covered in a future post.)
As before, the document itself is presented as a .pdf file, to facilitate downloading, printing and off-line archiving.
I hope you enjoy this information and benefit from it...
* * * * * * *
Monday, August 26, 2019
Finally — New Book Downloads (Free!)
The popular Better Microscopy Compendium Edition is now available for download as a set of .pdf files.
Previously, this book was an aggregation of four separate volumes, merged to maximize publishing economy for a printed format. However, at well over 300 pages (total) it seemed best to split the complete book into the original separate volumes, for easier downloading and/or online reading.
Consequenlty, the downloads offered below (.pdf files) have been orgainzed as follows:
Compendium Edition (Intro.) — F/R covers (art), basic Table of Contents... (6pp.)
Volume I: Transmitted Light Microscopy — Full text with Combined Index. (104pp.)
Volume II: Optical Contrast Techniques — Full text, with Index. (44pp.)
The Practical Guide to Microscopes — Full text with tables. (98pp.)
Notes on Microscopy — Original Notes collection and graphics. (56pp.)
(Total of above downloads = 308pp.) Just click the individual links to the .pdf files!
Note that since the download text retains the formatting for the original book page size (~7.5 x 9.6 in.) you may wish to adjust your printer settings to achieve a printed page output format most appropriate to your needs.
Also, note that while original page numbering has been retained, a few extraneous (blank/'filler') pages have been deleted, resulting in some numbering "gaps" within the separate volumes. If this bothers you, please feel free to restore these blank pages in your printouts. . . (lol)
Thank you!
Previously, this book was an aggregation of four separate volumes, merged to maximize publishing economy for a printed format. However, at well over 300 pages (total) it seemed best to split the complete book into the original separate volumes, for easier downloading and/or online reading.
Consequenlty, the downloads offered below (.pdf files) have been orgainzed as follows:
Compendium Edition (Intro.) — F/R covers (art), basic Table of Contents... (6pp.)
Volume I: Transmitted Light Microscopy — Full text with Combined Index. (104pp.)
Volume II: Optical Contrast Techniques — Full text, with Index. (44pp.)
The Practical Guide to Microscopes — Full text with tables. (98pp.)
Notes on Microscopy — Original Notes collection and graphics. (56pp.)
(Total of above downloads = 308pp.) Just click the individual links to the .pdf files!
Note that since the download text retains the formatting for the original book page size (~7.5 x 9.6 in.) you may wish to adjust your printer settings to achieve a printed page output format most appropriate to your needs.
Also, note that while original page numbering has been retained, a few extraneous (blank/'filler') pages have been deleted, resulting in some numbering "gaps" within the separate volumes. If this bothers you, please feel free to restore these blank pages in your printouts. . . (lol)
Thank you!
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