Details

Date1878
AuthorPowell and Lealand
ContributionWith Lealand, improved on the achromatic condenser lenses that they had been making for some years.
ReferenceBradbury
NotesThey now introduced one with numerical aperture of 0.99. See 1850. They later produced apochromatic condenser lenses.
CategoryMicroscopy
Pathogen ClassGeneral

Copyright © 2007- William C. Campbell.  All rights reserved.