Mechanical fan

A fan is a machine used to create flow within a fluid, typically a gas such as air. The fan consists of a rotating arrangement of vanes or blades which act on the fluid. The rotating assembly of blades and hub is known as an impeller, a rotor, or a runner. Usually, it is contained within some form of housing or case. This may direct the airflow or increase safety by preventing objects from contacting the fan blades. Most fans are powered by electric motors, but other sources of power may be used, including hydraulic motors and internal combustion engines. Fans produce flows with high volume and low pressure (although higher than ambient pressure), as opposed to compressors which produce high pressures at a comparatively low volume. A fan blade will often rotate when exposed to a fluid stream, and devices that take advantage of this, such as anemometers and wind turbines, often have designs similar to that of a fan.

Typical applications include climate control and personal thermal comfort (e.g., an electric table or floor fan), vehicle and machinery cooling systems, ventilation, fume extraction, winnowing (e.g., separating chaff of cereal grains), removing dust (e.g. in a vacuum cleaner), drying (usually in combination with heat) and to provide draft for a fire. While fans are often used to cool people, they do not actually cool air (if anything, electric fans warm it slightly due to the warming of their motors), but work by evaporative cooling of sweat and increased heat convection into the surrounding air due to the airflow from the fans. Thus, fans may become ineffective at cooling the body if the surrounding air is near body temperature and contains high humidity.

Fan

Fan or fans may refer to:

Technology

People

Geology

One of several types of fan-shaped deposits of sediment caused by the flow of streams or glacial melt:

Places

Fanø

Fanø is a Danish island in the North Sea off the coast of southwestern Denmark, and is the very northernmost of the Danish Wadden Sea Islands. Fanø municipality is the municipality (Danish, kommune) that covers the island and its seat is the town of Nordby.

Island

Fanø is separated from the mainland by the Wadden Sea over a span of approximately five kilometres. The island is 16 km long and 5 km wide, and it is located off the coast from the city of Esbjerg to which it is connected by ferry. The ferry ride takes 12 minutes. The high ferry ticket prices that are often subject to price increases are considered by the locals to be a great threat to the local tourism industry.

A variety of environments are to be found on Fanø. Not surprisingly, a very common one is sand. The island's whole western shore is one long beach. The island's northwestern corner is a vast sandbank called "Søren Jessens Sand". Søren Jessen was an entrepreneur and captain from Hjerting, today the westernmost suburb of Esbjerg and the bank is named after him because his ship, the "Anne Catriane", stranded here in 1712.

La Belle Lucie

La Belle Lucie, The Fan, Clover Leaves, Three Shuffles and a Draw, Alexander the Great, Trefoil or Midnight Oil is a solitaire where the object is to build the cards into the foundations.

All cards are visible from the start, but this does not imply that this game is solvable with strategy. The default rule is very hard to win. The majority of games cannot be solved. For example, moving a single card onto another blocks that stack until both cards can be removed to the foundations. Any setup that has a lower card of a specific suit below a higher of the same suit, or all kings not on the bottom of each cascade cannot be solved without cheating. The shuffle and redeal is of little help. For each king left in the second redeal, there is a 66% chance that the cascade cannot be solved (if the king is not lowest). Moving aces out (Trefoil rule) has cosmetic character.

Rules