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Abstrak :
Recording the growth of telegraphy over two centuries, this volume depicts the discoveries and ingenuity of those involved, the equipment they designed, and the applications and effects on society. Emphasis is placed on cable-based techniques and wireless transmissions.

Abstrak :
Terjadinya perubahan cara manusia dalam berkomunikasi saat ini merupakan buah dari perkembangan teknologi yang sangat pesat. Dalam berkomunikasi, manusia tidak perlu lagi melakukan tatap muka dan penyampaian pesan dapat dilakukan secara cepat dan menjangkau banyak orang. Oleh sebab itu, aplikasi perpesanan instan dan media sosial sangat populer digunakan. Dari berbagai aplikasi perpesanan instan yang populer tersebut, Telegram adalah aplikasi perpesanan instan yang banyak digunakan. Kepopuleran Telegram dengan berbagai fiturnya yang menarik, turut dimanfaatkan oleh teroris untuk menyebarkan propaganda terorisme. Penggunaan Telegram dianggap efektif dan mampu menyasar berbagai kalangan dalam satu waktu. Telegram juga dapat mengamankan pemberi propaganda dari kemungkinan dilacak oleh aparat penegak hukum, karena sifatnya yang anonymous sehingga mereka nyaman dalam menyebarkan propaganda. Maraknya pelaku teror yang melakukan aksi teror setelah sebelumnya teradikalisasi melalui Telegram menjadi permasalahan utama saat ini. Masifnya penyebaran propaganda di Telegram, memberikan andil terhadap timbulnya pemasalahan ini. Oleh sebab itulah, penelitian ini akan membahas bagaimana Detasemen Khusus 88 Anti Teror Polri sebagai aparat penegak hukum yang memiliki kewenangan menangani permasalahan terorisme, menangani propaganda terorisme melalui aplikasi Telegram ......Changes in how people communicate is a result of technology developing that grow so fast. Nowadays, when communicate, people do not need to meet directly and the message can spread quickly and reach any social class. That's why, messenger and social media are popular. From various social media and messenger that exists, Telegram is one of the most popular messenger used by people. Telegram popularity with it features, attract terrorist to spread terrorism propaganda through it. Telegram is considered effective and can reach any people in one time. Telegram also can secured the terrorist who give propaganda because Telegram is anonymous so it secure them from being trace by law enforcement and give them convenience to spread the propaganda. The massive number of terrorism propaganda spread through Telegram made the problem for national security. That's why, this research will explain how Detachment 88 Anti Teror as the stakeholder for terrorism, handling this problem.

Abstrak :
Radio was as much the culmination of the work of a series of scientists in the 19th Century, starting with Faraday, as it was an invention by Marconi. This book aims to illustrate the contributions made by these scientists and show how each was dependent upon the work and ideas of his predecessors; Faraday, Henry, Maxwell, Hughes, Fitzgerald, Hertz, Lodge and Marconi. The book represents the result of a long period of study by a man who knew the story well and researched it thoroughly; although Gerald Garratt died in 1989 the manuscript has been completed by his daughter. Gerald Garratt had a special interest in what might be termed the "pre-history" of radio. His book therefore outlines the sequence of development from Faraday's first prediction and concept of the electromagnetic field, the mathematical definition of the conditions for propagation of waves by Maxwell, the demonstration of their physical existence by Hertz, identification of the need for resonance between transmitter and receiver by Lodge and finally Marconi's successful practical application and "invention".

Abstrak :
On 14 July 2013, India closed down its telegraph service, drawing the curtain over an important chapter in its history of telecommunications. Introduced during the British colonial period, the telegraph was opened for public use on 1 February 1855. The beginning of the service, much like its end, was marked by strikingly similar scenes of people rushing to the telegraph office in order to send messages. The similarity with the contemporary scenario does not end here. Like the internet today, the electric telegraph came to play an important role in the conduct of journalism in nineteenth-century India. This book is an attempt to reconstruct this interconnected history of telegraphy and journalism and the first systematic account of the development of English-language news reporting in nineteenth-century India. Drawing on a wide range of historical material and an in-depth analysis of the newspaper press, it questions grand narratives of media revolutions, arguing instead that the use of telegraphy in journalism was gradual and piecemeal. News itself emerged as the site of many contestations, as imperial politics, capitalist enterprise, and individual agency shaped not only access to technologies of communication, but also the content and form of reporting.