A dragonfly has 30,000 ommatidia in each eye. The body of Ophiocoma wendtii, a type of brittle star, is covered with ommatidia, turning its whole skin into a compound eye! Compound eyes first appeared on Earth more than 500 million years ag...
http://www.daviddarling.info/encyclopedia/C/compound_ey...
|
|
|
Micscape Magazine for enthusiast microscopy ... single eyes and compound ones. In contrast with our eyes, insect eyes are immovable and unable to focus. Insects are short sighted. Butterflies are probably the most far sighted, they can see perhaps a few meters, while bumblebees only have a range of a half meter.
|
www.microscopy-uk.org.uk/mag/artapr00/inseye.html
www.microscopy-uk.org.uk/mag/artapr00/inseye.html
|
|
|
|
Section Through a Compound Eye ... < Back to Insect Structure and Function ... Next Drawing >
|
www.biology-resources.com/drawing-compound-eye.html
www.biology-resources.com/drawing-compound-eye.html
|
|
|
A pair of compound eyes is the principle visual organs of most insects; they are found in nearly all adults ... Biology Articles » Zoology » Entomology » Sense Organs in Insects » Compound Eyes...
|
www.biology-online.org/articles/sense-organs-insects/co...
www.biology-online.org/articles/sense-organs-insects/compound-eyes.html
|
|
There are two types of compound eyes. The first, belonging to insects active in daylight, processes light as it penetrates the cornea of the ommatidium. Vision is said to be “appositional” for the image is a juxtaposition of the information received by each ommatidium.
|
insects.free.fr/Morphology/Head/Eye/compound_eyes.htm
insects.free.fr/Morphology/Head/Eye/compound_eyes.htm
|
|
The advantage for insects is that compound eyes allow them to fly at high speeds through dense woods and marshes without hitting anything and to chase other quick-flying insects. They are also excellent for detecting motion, essentially just recording slight changes in the image over short intervals.
|
hannover.park.org/Canada/Museum/insects/evolution/evolu...
hannover.park.org/Canada/Museum/insects/evolution/evolution.html
|
|
Electroretinograms recorded from slowly moving insects like the mealworm beetle Tenebrio molitor and the stick insect Carausius morosus are shown to be distorted by the use of electrodes of stainless steel and silver/silver chloride wires, unless they are used in conjunction with amplifiers having extremely high...
|
jeb.biologists.org/cgi/content/abstract/71/1/1
|
|
Automatic download; [Begin manual download] ... Downloading the PDF version of:; J Exp Biol Kugel 71 (1): 1. (273K) ... This file is in Adobe Acrobat (PDF) format. If you have not installed and configured the Adobe Acrobat Reader on your system, see Help with Printing for instructions.
|
jeb.biologists.org/cgi/reprint/71/1/1
|
|
