Earthwatcher

Earthwatcher deceased

Posted: 11 Oct 2016


Taken: 10 Oct 2016

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1/100 f/5.6 85.0 mm ISO 100

Canon EOS 600D

EF-S15-85mm f/3.5-5.6 IS USM


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Keywords

macro
red
plant
close-up
leaves
pear
autumn leaves
Autumn


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Pear leaves 'pleochroic halos'

Pear leaves 'pleochroic halos'
The fungal rust spots on the pear tree leaves remind me of the pleochroic halos often seen in biotite mica crystals in thin sections of rocks prepared for petrological microscopy.

www.ucl.ac.uk/%7Eucfbrxs/PLM/zircon.html

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