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Clarence King | all galleries >> Galleries >> Silver Lake Nature Center > Burdock
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03-AUG-2015

Burdock

Silver Lake Nature Center - Bristol, PA

After taking his dog for a walk one day in the early 1940s, George de Mestral, a Swiss inventor, became curious about the seeds of the burdock plant that had attached themselves to his clothes and to the dog's fur.
Under a microscope, he looked closely at the hook system that the seeds use to hitchhike on passing animals aiding seed dispersal, and he realized that the same approach could be used to join other things together.
The result of his studies was Velcro.
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Canon EOS 70D ,Canon EF-s 55 - 250mm
1/60s f/10.0 at 157.0mm iso1600 hide exif
Full EXIF Info
Date/Time03-Aug-2015 12:34:33
MakeCanon
ModelCanon EOS 70D
Flash UsedNo
Focal Length157 mm
Exposure Time1/59 sec
Aperturef/10
ISO Equivalent1600
Exposure Bias
White Balance
Metering Mode
JPEG Quality
Exposure Program
Focus Distance

other sizes: small medium original auto
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