Television is a medium for transmitting moving images and sound through telecommunication technologies. Early television used optical and mechanical technologies but modern television relies on electronic technologies to capture images and transmit them as a stream of electrical pulses using scanning. The first transmitted images were sent electrically in the late 19th century by early fax machines. Television programming can be distributed through original broadcast runs on networks or stations or later syndication to other markets and stations. Television worldwide is financed through various means including government, advertising, licensing fees or subscriptions.