Wikipedia:Picture of the day/July 2009

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Poster for an 1884 American production of

The Bridgewater Bridge and Causeway is a vertical-lift bridge located in Hobart, Tasmania that crosses the River Derwent. Construction began in 1939 but was delayed due to World War II; the bridge opened in 1946. It is the largest lift bridge in Australia and one of the few left in the Southern Hemisphere.

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Painting credit: John Trumbull

A panorama of Dar es Salaam, the largest city in Tanzania. Although it lost its official status as capital city to Dodoma in 1974, it remains the center of the permanent central government bureaucracy and continues to serve as the capital for the Dar es Salaam Region.

Photo credit: Muhammad Mahdi Karim

The firebox of a coal-fired steam locomotive, where the fuel is burned, producing heat to boil the water in the boiler. Most are somewhat box-shaped, hence the name. This firebox burns at approximately 3,500 °F (1,930 °C).

Photo credit: Mark Pellegrini

Rhinotia hemistictus is a species in the Belidae family of weevils. The belids are known as "primitive weevils" because they have straight antennae, unlike the "true weevils" or Curculionidae which have elbowed antennae.

Photo credit: Fir0002

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Photo credit: Matt Field

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Photo credit: Heptagon

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Image credit: NASA

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Reference ranges for blood tests, sorted by mass concentration. A reference range is a set of values used by a health care provider to interpret a set of medical test results. The range is usually defined as the set of values 95 percent of the normal population falls within, or two standard deviations from the mean. All values (with some exceptions) denote blood plasma concentration, which is approximately 60–100% larger than the actual blood concentration if the amount inside red blood cells is negligible.

Image credit: Mikael Häggström

A hand-tinted French

According to the caption, the Paris provost Hugues Aubriot, who laid the first stone in 1369, became one of its first prisoners under the pretext of heresy. The caption under the lower image reads, "This is how we punish traitors."

Image credit: Unknown

Wind Point Light is a lighthouse located at the north end of Racine Harbor in the U.S. state of Wisconsin. The lighthouse stands 108 feet (33 m) tall. Constructed in 1860, it is one of the oldest and tallest active lighthouses on the Great Lakes, and is listed on the National Register of Historic Places.

Photo credit: JeremyA

The Saturn V rocket carrying the Apollo 11 mission, the first manned mission to land on the Moon, launches from Kennedy Space Center on July 16, 1969. It was the fifth human spaceflight of Project Apollo, and carried Mission Commander Neil Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Buzz Aldrin. On July 20, Armstrong and Aldrin became the first humans to land on the Moon, while Collins orbited above.

Photo credit: NASA

Eriophora heroine is a species of orb-weaver spider in the Eriophora genus. Many of the species in this genus, including E. heroine, were formerly members of Araneus.

Photo credit: Fir0002

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The underside of a weak shelf cloud, a low, horizontal wedge-shaped arcus cloud. Arcus clouds are associated with the leading edge of thunderstorm outflow, or occasionally with a cold front even in the absence of thunderstorms. Rising cloud motion often can be seen in the leading (outer) part of the shelf cloud, while the underside often appears turbulent and wind-torn.

Photo credit: Fir0002

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Image credit: NASA

The "Baker" explosion, part of

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A sea otter (Enhydra lutris) nurses her pup from nipples on her abdomen. Native to the coasts of the northern and eastern North Pacific Ocean, sea otters eat primarily invertebrates such as sea urchins and are among the smallest marine mammals. They are vulnerable to oil spills as their primary form of insulation is thick fur.

Photo credit: Mike Baird

Female flowers of a

Image credit: Fastfission