Lènsa: Béda antara owahan
Konten dihapus Konten ditambahkan
Tanpa ringkesan besutan |
Tanpa ringkesan besutan |
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Larik 1: | Larik 1: | ||
[[Gambar:BiconvexLens.jpg|thumb|180px|Lensa]] |
[[Gambar:BiconvexLens.jpg|thumb|180px|Lensa]] |
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'''Lensa''' utawa uga |
'''Lensa''' utawa uga diarani '''Kanta''' yaiku sawijining srana kang awujud kaca bening gepeng sing duwe sisi-sisi kang '''''simetris'''''. Lensa duwe kagunan kanggo ngumpulake cahya marang siji titik utawa malah nyebarake cahya kang liwat ing tengahe. Lensa sepisanan dipangerteni saka catatan sandiwara Yunani Kuno liwat cathetane [[Aristhophane The Clouds]] (424 SM) kang nyebutake anane istilah ''gelas-gelas pembakar'' (lensa cembung kang digunakake kanggo mokusake sinaring srengenge kanggo nyiptakake geni) ing karyane. |
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[[file:Lens shapes.png|360px|right|thumb|'''1''' - Symmetrical double convex lens. <br>'''2''' - Asymmetrical double-convex lens<br>'''3''' - Plano- convex lens. <br>'''4''' - Positive meniscus lens.<br>'''5''' - Symmetrical biconcave lens.<br>'''6''' - Asymmetrical biconcave lens.<br>'''7''' - Plano-concave lens.<br>'''8''' - Negative meniscus lens.]] |
[[file:Lens shapes.png|360px|right|thumb|'''1''' - Symmetrical double convex lens. <br>'''2''' - Asymmetrical double-convex lens<br>'''3''' - Plano- convex lens. <br>'''4''' - Positive meniscus lens.<br>'''5''' - Symmetrical biconcave lens.<br>'''6''' - Asymmetrical biconcave lens.<br>'''7''' - Plano-concave lens.<br>'''8''' - Negative meniscus lens.]] |
Révisi kala 9 Agustus 2012 01.44
Lensa utawa uga diarani Kanta yaiku sawijining srana kang awujud kaca bening gepeng sing duwe sisi-sisi kang simetris. Lensa duwe kagunan kanggo ngumpulake cahya marang siji titik utawa malah nyebarake cahya kang liwat ing tengahe. Lensa sepisanan dipangerteni saka catatan sandiwara Yunani Kuno liwat cathetane Aristhophane The Clouds (424 SM) kang nyebutake anane istilah gelas-gelas pembakar (lensa cembung kang digunakake kanggo mokusake sinaring srengenge kanggo nyiptakake geni) ing karyane.