1001 Space Earth Nature History Human World Science and Technology Chemistry Materials Force and Energy Heat and Light Electricity and Magnetism Industry Machines Electronics and Computers Cars and Trucks Railways Ships Aircraft Fishing and Agriculture Undersea Exploration

How is yarn made into cloth? Long threads called yarn are woven into cloth on a loom. A hand-operated loom has foot pedals, called treadles, which, when pressed, cause wires to separate the lengthways threads. These are called warp threads. This enables the weaver to pass a shuttle carrying a thread across the loom. This is the weft thread. By pressing different combinations of treadles, the weaver can build a design into the cloth. Modern mechanised looms work on the same principle as the traditional hand loom, shown here.   Previous: Back Book: 1001 Section: Science and Technology Chapter: Industry