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Showing posts from November, 2011

Photon diffraction in autumn forest

Photon diffraction is a situation where photons travel through a material without being absorbed, but rather undergoing repeated scattering events which change the direction of their path.

Photon diffraction in autumn forest, Lake Karagöl near Ankara Airport. Diffraction refers to various phenomena which occur when a wave encounters an obstacle. A shadow of a solid object, using light from a compact source, shows small fringes near its edges consequence of the fact that light propagates as a wave.

Little Red Riding Hood at Autumn Lake

Autumn reflections: Little Red Riding Hood focusing and shooting fall colors at forest lake Karagöl near Ankara Airport. Just reflection of fall colors spilled on water surface. Real watercolor painting by nature.

Aether theories in early modern physics proposed the existence of a medium, the aether, a space-filling substance or field, thought to be necessary as a transmission medium for the propagation of electromagnetic waves.

Autumn at Lake Karagöl

Watercolor painting by nature: Reflection of autumn colors on the lake surface. Lake Karagöl near Ankara Airport.

An autumn leaf in the forest

Autumn color in the forest Lake Karagöl, Çubuk, Ankara, Turkey.PHOTO:Autumn leaf in the forest by

Critically Endangered Northern Bald Ibis at Birecik

The Northern Bald Ibis was once widespread across the Middle East, northern Africa, southern and central Europe, with a fossil record dating back at least 1.8 million years. It disappeared from Europe over 300 years ago, and is now considered critically endangered. There are believed to be about 500 wild birds remaining in southern Morocco, and fewer than 10 in Syria, where it was rediscovered in 2002. To combat this ebb in numbers, recent reintroduction programs have been instituted internationally, with a semi-wild breeding colony in Turkey, as well as sites in Austria, Spain, and northern Morocco.

Critically Endangered is the highest risk category assigned by the IUCN Red List for wild species before extinction. Critically Endangered means that a species' numbers have decreased, or will decrease, by 80% within three generations.

As the IUCN does not consider a species extinct until extensive, targeted surveys have been conducted, species which are possibly extinct are still lis…