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HID lamps are used in high-performance bicycle headlamps, as well as flashlights and other portable lights, because they produce a great amount of light per unit of power. As the HID lights use less than half the power of an equivalent tungsten-halogen light, a significantly smaller and lighter-weight power supply can be used. HID lamps have ...
Sheringham Point Lighthouse Green Island Lighthouse, St. Lawrence middle estuary. This is a list of lighthouses in Canada.These may naturally be divided into lighthouses on the Pacific coast, on the Arctic Ocean, in the Hudson Bay watershed, on the Labrador Sea and Gulf of St. Lawrence, in the St. Lawrence River watershed (including the Great Lakes), and on the Atlantic seaboard.
This light is used to mark the southern entrance to Barkley Sound. It is a square pyrimidal tower made of steel. This skeletal structure has a square cylinder in the center. There is a lantern and gallery, both painted red. Three sides have a white, slatted daymark. This light is staffed and consists of a number of buildings, all with red roofs.
The Louisbourg Lighthouse was the first lighthouse in what was to become Canada (and the second in North America after the 1716 Boston Light). [1] It was constructed at the French fortress of Louisbourg on Cape Breton Island in 1734, patterned after the 1682 Phare des Baleines at Saint-Clément-des-Baleines. The Louisbourg Lighthouse was ...
They are located at mile point 606.8, and control a 72.9 miles (117.3 km) long navigation pool. The locks and their associated canal were the first major engineering project on the Ohio River, completed in 1830 as the Louisville and Portland Canal, designed to allow shipping traffic to navigate through the Falls of the Ohio.
The Canadian Arctic Rift System is a branch of the Mid-Atlantic Ridge that extends 4,800 km (3,000 mi) into the North American continent. It is an incipient structure that diminishes in degree of development northwestward, bifurcates at the head of Baffin Bay and disappears into the Arctic Archipelago.
Map of major river basins These are the major U.S. river basins in the U.S., as designated by the U.S. Water Resources Council. [ 1 ] Each of these river basins contain a number of smaller river basins.
On April 11, 1908, the United Kingdom and the United States agreed, under Article IV of the Treaty of 1908 "concerning the boundary between the United States and the Dominion of Canada from the Atlantic Ocean to the Pacific Ocean", to survey and delimit the boundary between Canada and the U.S. through the St. Lawrence River and Great Lakes, by ...