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The Bessel points are located 0.5594 of the length of the rod apart, slightly closer than the Airy points. [2] [3] [7] Because line standards invariably extend beyond the lines marked on them, the optimal support points depend on both the overall length and the length to be measured.
The Official Table of Drops, formerly issued by the British Home Office, is a manual which is used to calculate the appropriate length of rope for long drop hangings. Following a series of failed hangings, including those of John Babbacombe Lee , a committee chaired by Henry Bruce, 1st Baron Aberdare was formed in 1886 to discover and report on ...
A flat bar road bike, also called a fitness bike, is a hybrid bike optimized for road usage or a road bike with a flat handlebar in place of a drop bar. [ 1 ] [ 2 ] Frame construction and geometry borrow significantly from conventional road design.
The weight of a rail per length is an important factor in determining rail strength and hence axleloads and speeds. Weights are measured in pounds per yard ( imperial units in Canada, the United Kingdom and United States) and kilograms per metre in mainland Europe and Australia ).
The US/Imperial bar size system recognizes the use of true metric bar sizes (No. 10, 12, 16, 20, 25, 28, 32, 36, 40, 50 and 60 specifically) which indicates the nominal bar diameter in millimeters, as an "alternate size" specification.
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The total weight of the barbell varies based on the type and number of plates loaded onto the ends of the bar and the lift being performed, and easily can be 540 kilograms (1,190 lb) or more with a squat dedicated bar (which itself can weigh up to 29 kg (65 lb) and have up to 35 mm (1.4 in) grip section diameter).
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