Εικόνα:Dragonfly eye 3811.jpg

Από τη Βικιπαίδεια, την ελεύθερη εγκυκλοπαίδεια

Δεν διατίθεται υψηλότερη ανάλυση.

Dragonfly_eye_3811.jpg (389 × 481 pixel, μέγεθος αρχείου: 51 KB, τύπος MIME: image/jpeg)


Σήμα της Κοινής Wikimedia Αυτό το αρχείο προέρχεται από την Κοινή Wikimedia. Για περισσότερες πληροφορίες δείτε την σελίδα περιγραφής της.
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".

العربية | Asturianu | Български | বাংলা | ইমার ঠার | Brezhoneg | Bosanski | Català | Sinugboanong Binisaya | Česky | Dansk | Deutsch | Ελληνικά | English | Esperanto | Español | Eesti | Euskara | فارسی | Suomi | Français | Galego | עברית | Hrvatski | Magyar | Bahasa Indonesia | Ido | Íslenska | Italiano | 日本語 | ქართული | 한국어 | Kurdî / كوردي | Latina | Lëtzebuergesch | Lietuvių | Bahasa Melayu | Nnapulitano | Nederlands | Norsk (nynorsk) | Norsk (bokmål) | Polski | Português | Română | Русский | Slovenčina | Slovenščina | Shqip | Српски | Svenska | తెలుగు | ไทย | Türkçe | Українська | اردو | Tiếng Việt | Volapük | 中文(简体) | 中文(繁體) | +/-

Dragonfly with compound eyes. Author: David L. Green

A compound eye is a visual organ found in certain arthropods. The compound eye consists of between 12 and 1,000 ommatidia, little dark/bright sensors. The image perceived by the arthropod is "recalculated" from the numerous ommatidia which point in slightly different directions. In contrast to other eye types, there is no central lens or retina. Though the resulting image is poor in resolution, it can detect quick movements and, in some cases, the polarization of light. Dragonflies have about 30,000 facets to their compound eyes, giving them nearly a 360° field of vision. Photo credit: David L. Green

m:Image:Dragonfly eye 3811.jpg

Τα παρακάτω λήμματα συνδέουν σε αυτή την εικόνα/γραφικό: