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The lumen (lm) is the SI unit for luminous flux, the total amount of light emitted by a source, weighted according to the sensitivity of the human eye to various colours of light. Lumens per watt is a common measure of the efficacy of a light source. The luminous flux is of less value for bicycle lighting due to the importance of directionality.
Lezyne is a manufacturer of bicycle accessories headquartered in Reno, Nevada, with offices in San Luis Obispo, Berlin and Taichung. The company is known for producing pumps, multi-tools, saddle bags, bottle cages, lights and GPS cyclocomputers. [1] [2] [3] Most of their products are manufactured in-house at their factory in Taichung, Taiwan. [4]
The 'diamond' frame's central, horizontal top bar forces the rider to swing a leg over the bicycle's seat. A Triumph step-through, ladies', or open frame Dursley Pedersen bicycle circa 1910 A penny-farthing photographed in the Škoda Auto Museum in the Czech Republic A Brompton folding bicycle Bicycle in Victorian Plymouth, England, with a predecessor of the Starley diamond-frame A cantilever ...
Around 1922, Blackburne first ran the Tomtit two-cylinder light aircraft engine based on the Lympne 696 cc V-twin. Blackburne Thrush. In 1924 the company produced the Blackburne Thrush a three-cylinder light aircraft engine. The first engine design was of 1098 cc, consistent with the capacity limit imposed for the 1924 light aeroplane trials at ...
John M. Blackburn (October 19, 1913 in Massillon, Ohio – November 15, 2006 in Newport, Oregon) was a lyricist. He wrote the lyrics to " Moonlight in Vermont ". He was raised in Shaker Heights, a suburb of Cleveland, Ohio .
Arthur Seaforth Blackburn was born on 25 November 1892 at Woodville, Colony of South Australia.He was the youngest child of Thomas Blackburn, an Anglican canon and entomologist, and his second wife, Margaret Harriette Stewart, née Browne. [1]
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