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An early wheel made of a solid piece of wood. A wheel is a rotating component (typically circular in shape) that is intended to turn on an axle bearing. The wheel is one of the key components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating ...
Rickshaw originally denoted a pulled rickshaw, which is a two- or three-wheeled cart generally pulled by one person carrying one passenger. The first known use of the term was in 1879. [1] Over time, cycle rickshaws (also known as pedicabs or trishaws), auto rickshaws, and electric rickshaws were invented, and have replaced the original pulled ...
A tricycle, sometimes abbreviated to trike, [1][2][3][4] is a human-powered (or gasoline or electric motor powered or assisted, or gravity powered) three-wheeled vehicle. Some tricycles, such as cycle rickshaws (for passenger transport) and freight trikes, are used for commercial purposes, especially in the developing world, particularly Africa ...
The first forms of road transport were pack animals carrying goods over tracks that often followed game trails, such as the Natchez Trace. [1] In the Paleolithic Age, humans did not need constructed tracks in open country. The first improved trails would have been at fords, mountain passes and through swamps. [2]
Auto rickshaw in Sri Lanka. An auto rickshaw is a motorized version of the pulled rickshaw or cycle rickshaw.Most have three wheels and do not tilt. They are known by many terms in various countries, including 3wheel, Adaidaita Sahu, Keke-napep, Maruwa, auto rickshaw, auto, baby taxi, bajaj, bao-bao, chand gari, easy bike, jonnybee, lapa, lapa-lapa, mototaxi, pigeon, pragya, tuktuk, tukxi, and ...
the great wheel also known as walking wheel or wool wheel for rapid long draw spinning of woolen-spun yarns; the flax wheel, which is a double-drive wheel used with a distaff for spinning flax fibres for making linen; saxony and upright wheels, all-purpose treadle driven wheels used to spin both woolen and worsted-spun yarns; and; the charkha ...
The Columbian exchange, also known as the Columbian interchange, was the widespread transfer of plants, animals, precious metals, commodities, culture, human populations, technology, diseases, and ideas between the New World (the Americas) in the Western Hemisphere, and the Old World (Afro-Eurasia) in the Eastern Hemisphere, in the late 15th and following centuries. [1]
History of silk. Court Ladies Preparing Newly Woven Silk, a Chinese silk painting sucby Emperor Huizong of Song, early 12th century. The production of silk originated in Neolithic China within the Yangshao culture (4th millennium BC). Though it would later reach other places in the world, the art of silk production remained confined to China ...