Far-field spectra of ultrashort laser pulse filament in 4 cm of water. Daniele Faccio, Como, Italy
01 Jan 2007
My private Heiligenschein ("holy light"), a phenomenon of enhanced backscatter that can be particularly visible when the sun or moon illuminates a wet layer of vegetation (such as dew-covered grass). Joseph Shaw, Bozeman, Mont.
Multiple reflections of the sun from a curved building cause a ray pattern that closely resembles the caustic formed by rays from an optical element that induces spherical aberration. Joseph Shaw, Bozeman, Mont.
Multiple reflections of the sun in the windows of this curved building (The International Arctic Research Center, the University of Alaska-Fairbanks). Joseph Shaw, Bozeman, Mont.
Stress birefringence in a car-window coating is visible as colored bands when the window is photographed between crossed polarizers. In this case, one polarizer is on the camera and the other is effectively on the road. Joseph Shaw, Bozeman, Mont.
A 10-m gamma ray telescope photographed against the deep-blue desert sky at the Fred Whipple Observatory on Mount Hopkins, near Tucson, Ariz. Joseph Shaw, Bozeman, Mont.
Sunlight being refracted and reflected by ice crystals blown by wind off the mountain creates a parhelion (or sundog) over the ski lift. Joseph Shaw, Bozeman, Mont.
Sunlight is refracted and reflected to create a colorful parhelion (sundog) to the left and is reflected from weakly rocking ice crystals to create a subsun below the sun. Joseph Shaw, Bozeman, Mont.
Far-field spectra of ultrashort laser pulse filament in 4 cm of ethanol. Daniele Faccio, Como, Italy
Dual image formed by the reflection on the front and rear surface of a soap bubble. Osvaldo Buccafusca, Fort Collins, Colo.
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