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Template:POTD/2010-07-28
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2010 July
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Picture of the day
A
tachinid
fly (species undetermined), where the
iridescence
on the
wings
is visible. Iridescence is an
optical phenomenon
where the
colour
of an object changes as the angle of view changes. It is caused by multiple
reflections
from multi-layered, semi-transparent surfaces in which
phase shift
and
interference
of the reflections
modulates
the incident light.
Photo:
Muhammad Mahdi Karim
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