Portrait of Alexander Graham Bell with an early telephone device positioned in front of him, symbolizing the first telephone call in history.

telephone

Overview of the invention of the telephone, with focus on the work of Alexander Graham Bell.

Contunico © ZDF Studios GmbH, Mainz; Thumbnail Gary Todd; © Georgios Kollidas/Dreamstime.com

Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Neeraj Charurvedi/Dreamstime.com

Learn about India's efforts to improve its education system, 2009 film.

Educating India's large population: Challenges and solutions
© Open University (A Britannica Publishing Partner)

Learn about the future of quantum technology.

Know about the future of quantum technology and how quantum devices can be present in everyday technology
© Open University (A Britannica Publishing Partner)

A discussion of how the AT&T Corporation coped with the massive increase in telecommunication traffic that immediately followed the attacks of September 11, 2001.

Know how the AT&T Corporation managed the telecommunication traffic right after the attacks of September 11, 2001
University College Cork, Ireland (A Britannica Publishing Partner)

An overview of solar flares.

Learn how solar flares can affect satellites, rockets, telecommunications systems and activity on the surface of the Earth