Mounts, Fans, Power Strips

A fan is a device used to induce airflow and generally made from broad, flat surfaces which revolve or oscillate. The most common applications of fans are for creature comfort, ventilation, or gaseous transport for industrial purposes. more...

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Leaves or flat objects, waved to produce a more comfortable atmosphere, are the simplest kind of fan.

Typical applications include ornamental decorations, climate control, cooling systems, personal wind-generation (e.g., an electric table fan), ventilation (e.g., an exhaust fan), winnowing (e.g., separating chaff of cereal grains), removing dust (e.g., sucking as in a vacuum cleaner), drying (usually in addition to heat) and to provide draft for a fire.

History

Etymology

Old English fann referred to a basket or shovel for winnowing. It was a loan from Latin vannus, with the same meaning, derived from ventus "wind" or a related root (cf. vates). In the sense of "device for moving air" the word is first attested 1390, the hand-held version is first recorded in 1555.

Ancient

Fan history stretches back thousands of years. Since antiquity, fans have possessed a dual function – a status symbol and a useful ornament. In the course of their development, fans have been made of a variety of materials and have included decorative artwork. The simplest fans are leaves or flat objects, waved to produce a cooler atmosphere. These rigid or folding hand-held implements have been used for cooling, for air circulation, as a ceremonial device, and as a sartorial accessory throughout the world from ancient times. They are still widely used.

The earliest known fans are called 'screen fans' or 'fixed leaf fans'. These were manipulated by hand to cool the body, to produce a breeze, and to ward off insects. Such early fans usually took the form of palm leaves. Some of the earliest known fans have come from Egyptian tombs. Early Assyria and Egypt employed slaves and servants to manipulate the fan. In Egyptian reliefs, fans were of the rigid type. Tutankhamum's tomb possessed gold fans with ostrich feathers, matching depictions on tomb walls. Long-handled, disk-shaped fans were carried by attendants in ancient times and were associated with regal and religious ceremonies. They had handles or sticks attached to a rigid leaf or to feathers. Plumage of birds was used in fans, such as those of the Egyptians and Native American Indians, that had both practical and ceremonial uses.

In the ancient Americas, the Aztec, Maya, and South American cultures used bird feathers in their fans. Among the Aztec fans were used to depict merchants in illustrations of trades. The use of various feather types had a religious connotation. The Paracas people of South America (modern Peru) have left numerous examples of ancient feather fans among their mummies. In India, the Hindi term for a fan is 'pankha' (a derivative of "a feather" or "a bird's wing"). Pictorial evidence records that the Greeks, the Etruscans, and the Romans used fans as cooling and ceremonial devices. In Greece, linen was stretched over leaf-shaped frames. In Rome, gilded and painted wooden fans were used. Roman ladies throughout the empire used circular fans. Chinese sources link the fan with mythical and historical characters.

Read more at Wikipedia.org