The SAGE Key Concepts series provide students with accessible and authoritative knowledge of the essential topics in a variety of disciplines. Cross-referenced throughout, the format encourages critical evaluation through understanding. Written by experienced and respected academics, the books are indispensable study aids and guides to comprehension. Key Concepts in Journalism offers a systematic and accessible introduction to the terms, processes, and effects of journalism;a combination of practical considerations with theoretical issues; and further reading suggestions. The authors bring an enormous range of experience in newspaper and broadcast journalism, at national and regional level, as well as their teaching expertise. This book will be essential reading for students in journalism, and an invaluable reference tool for their professional careers.



The concept behind the ubiquitous box in the corner of the room dates back 120 years. In 1884, Russian-born Paul Nipkow invented a scanning system which dissected a scene into a pattern of pixels, or ‘picture dots’ which could then be transmitted and reproduced as a visual image. The world's first public demonstration came in 1925 when John Logie Baird showed his television system in Selfridge's department store, London. Three years later he sent the first ‘intelligible’ TV signal across the Atlantic and the BBC began experimenting with television transmissions in 1929 (Crisell, 2002). Baird's system ultimately lost out to a more sophisticated one developed by EMI but the BBC claimed the credit for the first high definition service transmitted from Alexandra Palace in north ...

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