Fan (machine) 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. The punkah fan was used in India about 500 BCE. It was a handheld fan made from bamboo strips or other plant fibre, that could be rotated or fanned to move air. During British rule, the word came to be used by Anglo-Indians to mean a large swinging flat fan, fixed to the ceiling, and pulled by a servant, called the punkawallah. For purposes of air conditioning, the Han Dynasty craftsman and engineer Ding
Dynamism of a Speeding Horse + Houses Dynamism of a Speeding Horse + Houses Dynamism of a speeding Horse + Houses is a sculpture from Umberto Boccioni realized in 1914-1915. It is now part of the Peggy Guggenheim Collection art museum in Venice. With this artwork Boccioni aims at representing his idea on the concept of space, according to which not being able to see the distance means not to be able to perceive it. As a consequence, a spinning horse and some houses in the background look to the observer as single dynamic unity. Umberto Boccioni sculpted "Dynamism of a speeding Horse + Houses" after publishing