Ceiling fan be used to reduce the stratification of warm air in a room by forcing it down to affect both occupants' sensations and thermostat readings, thereby improving climate control energy efficiency. Punkah-type ceiling fans date back to 500 BC, and are native to India. Unlike modern rotary fans, these punkah fans move air by moving to and fro, and were operated manually by cord. The first rotary ceiling fans appeared in the early 1860s and 1870s in the United States. At that time, they were not powered by any form of electric motor. Instead, a stream of running water was used,
Carrick-a-Rede Rope Bridge island for over 350 years. It has taken many forms over the years. In the 1970s it had only one handrail and large gaps between the slats. A new bridge, tested up to ten tonnes, was built with the help of local climbers and abseilers in 2000. Another was built in 2004 and offered visitors and fishermen alike a much safer passage to the island. The current wire rope and Douglas fir bridge was made by Heyn Construction in Belfast and raised early in 2008 at a cost of over £16,000. There have been many instances where visitors, unable to