(Q24629281)
Statements
250 millimetre
0 references
.jpg)
4th Order fixed Fresnel Lens, crica Late 1800's (41645846745).jpg
1,832 × 2,760; 2.85 MB
1,832 × 2,760; 2.85 MB
0 references
4
0 references
Fourth order fresnel lenses
0 references
Sitelinks
Wikipedia(0 entries)
Wikibooks(0 entries)
Wikinews(0 entries)
Wikiquote(0 entries)
Wikisource(0 entries)
Wikiversity(0 entries)
Wikivoyage(0 entries)
Wiktionary(0 entries)
Multilingual sites(1 entry)
- commonswiki Category:Fourth order fresnel lenses