Wikipedia:Picture of the day/April 2007
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These featured pictures, as scheduled below, appeared as the picture of the day (POTD) on the English Wikipedia's Main Page in April 2007. Individual sections for each day on this page can be linked to with the day number as the anchor name (e.g. [[Wikipedia:Picture of the day/April 2007#1]] for April 1).
You can add an automatically updating POTD template to your user page using {{Pic of the day}} (version with blurb) or {{POTD}} (version without blurb). For instructions on how to make custom POTD layouts, see Wikipedia:Picture of the day.Purge server cache
April 1
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A statue of Louis Agassiz, a Swiss-American geologist, after the 1906 San Francisco earthquake, on the campus of Stanford University. It is said that when the earthquake struck, "[the statue of] Agassiz stuck his head underground to find out what was going on in the earth below and with his finger pointing saying, 'Hark! Listen!'" Photo credit:
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April 2
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An 1891 photograph of Photo credit: Gustaf Nordenskiöld
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April 3
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A photo of Photo credit: Bticho
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April 4
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The initial step in a Mandelbrot set zoom sequence (see remaining steps) with a continuously colored environment. The Mandelbrot set is a fractal that has become popular outside of mathematics both for its aesthetic appeal and its complicated structure, arising from a simple definition. Image credit: Wolfgang Beyer
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April 5
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A Trinity Cathedral. The square is dominated by the equestrian Monument to Nicholas I .
Image from:
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April 6
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The head of a Photo credit: Fir0002
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April 7
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A man riding a bucking Modern rodeos include bronc riding as an event. In this sport, riders attempt to stay on a bronco for 8 seconds while holding on with only one hand. Photo credit: Erwin Smith
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April 8
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A Gray Wolf once ranged from central Mexico to the Southwestern United States. In 1980, the last five known surviving members were captured to save the species. Now, over 300 wolves are taking part in a wolf reintroduction program, with at least fifty individuals in the wild.
Photo credit: Jim Clark,
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April 9
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A pile of . Photo credit: Rainer Zenz
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April 10
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extra-vehicular activity (EVA) as construction resumes on the International Space Station. The landmasses depicted in the background are the South Island (left) and North Island (right) of New Zealand .
Photo credit: NASA
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April 11
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A juvenile Red-tailed Hawk eating a California Vole. This act, called predation, is a biological interaction where a predator species kills and eats others, known as prey. Predators are either carnivores or omnivores. Herbivores are usually treated separately, but from an ecological perspective, the activities of the herbivorous species that kill the organism they feed on is functionally the same as predation.
Photo credit: Steve Jurvetson
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April 12
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A female unlike most blowfly species which lay eggs. Photo credit: Fir0002
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April 13
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An Photo credit: Diliff
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April 14
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Wreckage of the Visits by tourists in submersibles and the recovery of artifacts are hastening the decay of the wreck. It is estimated that the hull and structure of the ship may collapse to the ocean floor within the next 50 years. Photo credit:
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April 15
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False-color Mars Reconnaissance Orbiter image of a side of the Chasma Boreale, a canyon in the polar ice cap of the Planum Boreum (north pole of Mars). Light browns are layers of surface dust, greys and blues are layers of water and carbon dioxide ice. Regular geometric cracking is indicative of higher concentrations of water ice.
The Planum Boreum's permanent ice cap has a maximum depth of 3 km (1.9 mi). It is roughly 1200 km (750 mi) in diameter, an area equivalent to about 1½ times the size of Texas. The Chasma Boreale is up to 100 km (62.5 mi) wide and features scarps up to 2 km (1.25 mi) high. For a comparison, the Grand Canyon is approximately 1.6 km (1 mi) deep in some places and 446 km (279 mi) long but only up to 24 km (15 mi) wide. Photo credit: Mars Reconnaissance Orbiter
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April 16
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National Gallery in London .
Artist: Leonardo da Vinci
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April 17
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The Photo credit: Diliff
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April 18
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A series of images demonstrating a focus bracket, a technique useful in situations with limited depth of field, such as macro photography, where one combines the in-focus portions of multiple exposures digitally. The image on the left shows a single shot taken at f/11 with the features of the Wolf spider closest to the camera. The center image shows the features farthest from the camera. The image on the right shows a sequence of 8 incrementally focused images of the spider assembled to make a composite image in Adobe Photoshop. Photo credit: Fir0002
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April 19
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Lewis Hine's 1920 Power house mechanic working on steam pump, one of his "work portraits", shows a working class American in an industrial setting. The carefully posed subject, a young man with wrench in hand, is hunched over, surrounded by the machinery that defines his job. But while constrained by the machinery, the man is straining against it—muscles taut, with a determined look—in an iconic representation of masculinity. Photo credit: Lewis Hine
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April 20
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Photo credit: Alexander Gardner
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April 21
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Image credit: United States Geological Survey |
April 22
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A whole and recessive gene that eliminates the capsaicin in the fruit. The pepper scores zero on the Scoville scale, meaning it has none of the "heat" that other chili peppers do.
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April 23
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A male Photo credit: Alan D. Wilson
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April 24
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This image features the Photo credit: Mike Grindstaff
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April 25
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A Photo credit: Alan D. Wilson
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April 26
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A whole and a half-shelled Persian Walnut (Juglans regia), also known as Common Walnut or English Walnut. This species of walnut is native from the Balkans, east through southwest and central Asia and the Himalayas to southwest China. Photo credit:
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April 27
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Boulevard du Temple, the first photograph of a person, taken by Louis Daguerre in late 1838 or early 1839 in Paris, France. The scene is of a busy street, but the city traffic does not appear due to the ten-minute long exposure time. The exception is a man in the lower left corner, who stood whilst getting his boots polished for long enough to show him in the picture. Photo credit: Louis Daguerre
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April 28
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wave motion. To give a sense of Jupiter's scale, the white oval storm directly below the Great Red Spot is approximately the same diameter as Earth .
Photo credit: Voyager 1
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April 29
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Atlantic White-sided Dolphins, on a concrete-floored dock at the port of Hvalba, which is in the Faroe Islands, north of the United Kingdom. Whaling in the Faroe Islands has been practised since at least the 10th century. It is strongly regulated by Faroese authorities and is approved by the International Whaling Commission .
Photo credit: Erik Christensen
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April 30
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A Photo credit:
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