Jonathan Cohen's photos with the keyword: symmetry

Dent was a London manufacturer of luxury clocks and watches, founded by Edward John Dent. Dent began making watches in 1814. Perhaps the company’s biggest coup is winning the contract to make the clock for the new palace of Westminster – or Big Ben as it’s more commonly known. Dent’s chronometers accompanied some of the 19th century’s most influential explorers. Robert FitzRoy took Dent chronometer no. 633 aboard HMS Beagle in 1831 the voyage that eventually led to the publication of The Origin of the Species – Darwin’s revolutionary theory of evolution. Two decades later, David Livingstone purchased Dent chronometer no. 1800 for his African explorations. And in 1890, the explorer H.M. Stanley was moved to write to Dent that "the Chronometers supplied by you, and which were taken across Africa in my last Expedition, proved a very great service to me and were in every way thoroughly satisfactory and reliable." The Dent clock at St Pancras railway station is a reproduction of the original, destroyed in the 1970s, in part made from castings taken from the remains of the original. For much of the year 2015 a black-and-silver replica of the famous DENT clock dangled from the roof. The copycat chronometer was the work of Cornelia Parker, and was punningly known as "One More Time." It was a functioning timepiece; a horological redundancy; the embodiment, perhaps, of having too much time. In the artist’s own words: "The clock is the most conscious focus of a railway station, a dominant force. Everyone is watching the clock, checking if they are late. The piece will introduce the idea of a parallel frame of reference, that of a slower astronomical time."

The Hog's Back Falls, officially known as the Prince of Wales Falls, but rarely referred to by this name, are a series of artificial waterfalls on the Rideau River in Ottawa, Canada. The falls are located just north of Mooney's Bay and the point where the Rideau Canal splits from the Rideau River. Prior to the construction of the Rideau Canal, these were a gentle set of rapids originally known as Three Rock Rapids. The name Hog's Back came into use shortly before canal construction. Civil Engineer John MacTaggart, in 1827, described them as "a noted ridge of rocks, called the Hog’s Back, from the circumstances of raftsmen with their wares [timber rafts] sticking on it in coming down the stream." These rapids were about 600 metres (2,000 feet) in length with a drop of about 1.8 metres (6 feet). They were navigable by canoe, no portage was required. As part of his concept for a slackwater navigation system, Lt. Colonel John By's design for the Rideau Canal called for a large dam to be raised in this location. It would divert water from the Rideau River into the artificially-created section of the canal leading to the Ottawa locks. It would also flood the Three Island Rapids located upstream (the head of present-day Mooney's Bay marks the foot of these rapids). The building of this dam provided one of the greatest construction challenges (it collapsed 3 times during construction) of the Rideau Canal, but when completed in 1831 it flooded the Rideau River at that point by 12.5 metres (41 feet). To accommodate the natural flow of the Rideau River and to prevent damage from spring flooding, a large waste water weir was constructed. The water from this flows though a channel that was excavated in the eastern bank of the Rideau River. This created the Hogs Back Falls that we see today. The head of the original rapids is now buried beneath the canal dam, but the lower section of the rapids can still be seen today. This location marks where the route of the Rideau Canal leaves the Rideau River and enters a man made canal leading to the Ottawa locks. A series of locks lowers boats from this location to the Ottawa River

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"We must see that each is given a square deal, because he is entitled to no more and should receive no less." - Theodore Roosevelt

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Appearances to the contrary, this is NOT a photomontage. It is just a case of life mirroring art.

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