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Feather, SEM
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Feather, SEM
Feather. Coloured scanning electron micrograph (SEM) of the structure of a feather. The flat broad vane of a feather is formed by comb-like rows of filaments called barbs, which project from either side of a central shaft (rachis, diagonally across centre). Each barb has rows of minute filaments called barbules. The barbules on one side bear hooks, while those on the other have a groove. This arrangement hooks adjacent barbs together, linking the whole structure. This makes the feather strong yet flexible and light, which is ideal for flight. Magnification: x30 when printed 10cm wide
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Media ID 6423380
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Animal Body Barb Barbs Barbule Barbules Bird Feather Feathers Flight Shaft Wing Rachis
EDITORS COMMENTS
This print showcases the intricate beauty and remarkable structure of a feather. Taken using a scanning electron microscope (SEM), the image reveals the mesmerizing details that are invisible to the naked eye. The feather's flat, broad vane is composed of comb-like rows of filaments known as barbs. These barbs extend from both sides of a central shaft called the rachis, which can be seen diagonally across the center of the photograph. Each barb consists of rows upon rows of tiny filaments called barbules. What makes this arrangement truly fascinating is that one side of each barbule bears hooks, while the other side has grooves. This unique design allows adjacent barbs to interlock with each other, creating an interconnected network throughout the entire feather structure. As a result, feathers possess incredible strength yet remain flexible and lightweight – qualities essential for flight. The magnification level used for this print is x30 when printed at 10cm wide, enabling us to appreciate even more closely every minute detail captured in this stunning image. Through this photograph by Science Photo Library, we gain insight into nature's ingenious designs and marvel at how something as delicate as a feather can possess such extraordinary capabilities.
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