In double checking my message I discovered an error in the resolution formula. The correct formula is given below:
R = wavelength/ (2)(numerical aperture) Then the resolution would be: R = 0.5 microns/ (2)(1.3) = 0.2 microns Therefore, the smallest particle that can be measured directly by a good light microscope is about 0.2 microns in diameter. Sorry for the error in my first message. Hope I have it correct this time! Jeff La Favre -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the subject: line. To post, address your message to: [email protected] List maintainer: Mike Devour <[email protected]>
