FRESNEL LENS
\fɹˈɛsnə͡l lˈɛnz], \fɹˈɛsnəl lˈɛnz], \f_ɹ_ˈɛ_s_n_əl l_ˈɛ_n_z]\
Sort: Oldest first
-
lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length
By Princeton University
Word of the day
basidiomycota
- comprises fungi bearing the spores on basidium: Gasteromycetes (puffballs); Tiliomycetes (comprising orders Ustilaginales (smuts) and Uredinales (rusts)); Hymenomycetes (mushrooms; toadstools; agarics; bracket fungi); in some classification systems considered a division of kingdom comprises fungi bearing spores on a basidium; includes Gasteromycetes (puffballs) Tiliomycetes comprising the orders Ustilaginales (smuts) and Uredinales (rusts) Hymenomycetes (mushrooms, toadstools, agarics bracket fungi).