Television

**Definition:** The transmission and reproduction of transient images of fixed or moving objects. An electronic system of transmitting such images together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound. (From Webster, 3rd ed)

**Tree numbers:** - J01.897.280.500.898 - L01.462.500.590.875 - L01.462.500.820.090.898 - L01.462.500.847.823