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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 ...
The ropelength of a knotted curve is defined as the ratio () = / (), where is the length of and () is the knot thickness of . Ropelength can be turned into a knot invariant by defining the ropelength of a knot K {\displaystyle K} to be the minimum ropelength over all curves that realize K {\displaystyle K} .
Visualisation showing that the length added to the circumference (blue) is dependent only on the additional radius (red) and not the original circumference (grey) String girdling Earth is a mathematical puzzle with a counterintuitive solution. In a version of this puzzle, string is tightly wrapped around the equator of a perfectly spherical Earth.
The climber will fall about the same height h in both cases, but they will be subjected to a greater force at position 1, due to the greater fall factor.. In lead climbing using a dynamic rope, the fall factor (f) is the ratio of the height (h) a climber falls before the climber's rope begins to stretch and the rope length (L) available to absorb the energy of the fall,
1.4 m – length of a Peel P50, the world's smallest car 1.435 m – standard gauge of railway track used by about 60% of railways in the world = 4 ft 8 1 ⁄ 2 in 2.5 m – distance from the floor to the ceiling in an average residential house [ 119 ]
Both methods require the user to know the relationship between the paces walked, and the distance traveled. [3] There are two main ways to use the beads. One is to represent the distance a person has walked, and the other is to represent the distance they need to walk. In the latter, beads may be used to count down the distance to a destination.
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Knotted cords were used by rope stretchers, royal surveyors who measured out the sides of fields (Egyptian 3ht). The knotted cords (Egyptian ht) were 100 royal cubits in length, with a knot every hayt or 10 royal cubits. The rope stretchers stretched the rope in order to take the sag out, as well as to keep the measures uniform.