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Richmond River Light, also known as Ballina Head Light and Ballina Light, is an active lighthouse located at Ballina Head, a headland in Ballina, New South Wales, Australia. The headland is at the northern side of the entrance to the Richmond River. It used to serve to guide ships into the river port and is used also serves as a leading light into the river, together with a steamer's masthead lantern with a 200 mm lens which is raised on a wooden structure from it. ==History== The station was established with a temporary light that was installed in 1866 from plans by James Barnet, at the same time of the installation of the Clarence River Light. The current lighthouse is one of five lighthouses of similar design designed and built by James Barnet in 1878-80, the other four being Fingal Head Light, Clarence River Light (now demolished), Tacking Point Lighthouse and Crowdy Head Light. A tender was called in 1878, it was built in 1879 and lit in 1880. The apparatus was a fixed light 4th order catadioptric apparatus of less than 1000 cd and was visible for .〔According to . says 19 km.〕 It was powered by colza oil. As the light was operated in conjunction with a nearby pilot station, only one light keeper was required. In 1920 the light was converted to acetylene gas and automated. In November 1940, the annexe and the porch connected to the lighthouse were demolished.〔Though says the demolition occurred when the light was converted to electricity, which puts in the 1960s, has a picture of the demolition itself, taking place in November 1940〕 The light was electrified in the 1960s. The current light source is a 28,000 cd, 1,000 Watt 120 Volt tungsten-halogen lamp, and the power source is the Mains with a Battery standby. It shows a light characteristic of four white flashes every 16 s (Fl.(4)W. 16s)〔''List of Lights''〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Richmond River Light」の詳細全文を読む スポンサード リンク
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