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Rope may be constructed of any long, stringy, fibrous material (e.g., rattan, a natural material), but generally is constructed of certain natural or synthetic fibres. [1] [2] [3] Synthetic fibre ropes are significantly stronger than their natural fibre counterparts, they have a higher tensile strength, they are more resistant to rotting than ropes created from natural fibres, and they can be ...
Modern wire rope was invented by the German mining engineer Wilhelm Albert in the years between 1831 and 1834 for use in mining in the Harz Mountains in Clausthal, Lower Saxony, Germany. [ 3 ] [ 4 ] [ 5 ] It was quickly accepted because it proved superior strength from ropes made of hemp or of metal chains , such as had been used before.
The line originally used wooden rails and a hemp haulage rope and was operated by human or animal power, through a treadwheel. [9] The line still exists and remains operational, although in updated form. It may be the oldest operational railway. [10] Minecart shown in De Re Metallica (1556). The guide pin fits in a groove between two wooden planks.
Andrew Smith Hallidie (March 16, 1836 – April 24, 1900) was an American entrepreneur who was the promoter of the Clay Street Hill Railroad in San Francisco. This was the world's first practical cable car system, and Hallidie is often therefore regarded as the inventor of the cable car and father of the present day San Francisco cable car system, although both claims are open to dispute.
The world governing body for the sport of jump rope is the International Jump Rope Union (IJRU). [14] It is a merger of two previous rival world organizations: the International Rope Skipping Federation (FISAC-IRSF), and the World Jump Rope Federation (WJRF).
2004: First podcast, invented by Adam Curry and Dave Winer, is a program made available in digital format for download over the Internet and it usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. [543] [544] [545] 2005: YouTube, the first popular video-streaming site, was founded
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The first steel rails were made in 1857 and standard rail lengths increased over time from 30 to 60 feet (9.1–18.3 m). Rails were typically specified by units of weight per linear length and these also increased. Railway sleepers were traditionally made of Creosote-treated hardwoods and this continued through to modern times. Continuous ...