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
Portrait of a Man with a Blue Chaperon a fur lined brown jacket over a black undervest. His headdress, a chaperon, contains two wings which hang down over the man's shoulders and extend to his chest. The edges of the cloth are given a shredded look at the edges of their trains. The hood is brightly and dramatically coloured using pigment extracted from the expensive lapis lazuli gemstone to give it its bright, intense hue. The headdress is of a similar but less extravagant type to that seen in van Eyck's c. 1433 "Portrait of a Man", and worn by a figure in the distance in his c.