communication

Hedy Lamarr – a Hollywood Star Invents Secure Communication Technology

Hedy Lamarr – a Hollywood Star Invents Secure Communication Technology

On November 9, 1913, Hollywood movie star Hedy Lamarr was born, co-inventor of an early form of the spread spectrum communication and frequency hopping, necessary for wireless communication from the pre-computer age to the present day. Family Background Ok, I assume that you are not necessarily familiar with spread spectrum communications technology. But, maybe you are wondering even more about a movie star diva of Hollywood’s Golden Age, who should be responsible for the…
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Germany’s First Radio Program Goes Public

Germany’s First Radio Program Goes Public

On October 29, 1923 the very first radio program in Germany was broadcast from the Vox-Haus in Berlin, Tiergarten. Funk-Stunde AG Berlin was the first radio station in Germany. The station was operated by the broadcasting company of the same name and broadcast its program from Berlin in the then northern German broadcasting district. Technical Background and Key Figures The history of the radio is long and for many years it was not…
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Johann Philipp Reis Demonstrates the first Telephone

Johann Philipp Reis Demonstrates the first Telephone

On October 26, 1861, German teacher and inventor Johann Philipp Reis, presented his telephone system at the ‘Physikalischen Verein zu Frankfurt am Main‘. Although it did not convince his contemporaries, his invention marks a milestone in telecommunications. Early Life and First Projects Philipp Reis was born on January 7, 1834 in Gelnhausen, Germany in a Jewish family as son of a baker. Reis’s mother died while he was an infant, and he…
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What a Brick! – The World’s First Cell Phone

What a Brick! – The World’s First Cell Phone

On September 21, 1983, the Motorola DynaTAC, the world‘s first commercially available cell phone received its FCC certification. DynaTAC was an abbreviation of Dynamic Adaptive Total Area Coverage. But, with a price of $3,995 in 1983 ($9,322 in present-day terms) it was a rather expensive while also exclusive gadget. But, it was not the first mobile phone at all. Actually, in Germany, the Deutsche Reichsbahn (German Railways) already started experimenting with a…
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Mary Had a Little Lamb – Edison and the Phonograph

Mary Had a Little Lamb – Edison and the Phonograph

On July 18, 1877 Thomas A. Edison conceived the first idea for his phonograph, the very first mechanical tool for recording and reproducing (replaying) sound. The phonograph also was the invention that first gained him public notice. Only a Byproduct Actually, the phonograph was intended as a byproduct of Edison’s efforts to “play back” recorded telegraph messages and to automate speech sounds for transmission by telephone. The recordings of the first phonograph…
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Tim Berners-Lee and the World Wide Web

Tim Berners-Lee and the World Wide Web

Tim Berners-Lee should know what he is talking about, when he says ‘Celebrity damages private life’. The person who is considered to be the inventor of the World Wide Web was on June 8, 1955. “I just had to take the hypertext idea and connect it to the TCP and DNS ideas and — ta-da!— the World Wide Web.” Tim Berners-Lee, Answers for Young People Joining Hypertext and the Internet Everything started with…
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Dit dit dit da dit – The first Morse Telegram

Dit dit dit da dit – The first Morse Telegram

On May 24th 1844 the first Morse telegram went over the line. Samuel Morse and his colleague Alfred Vail knew that the very first phrase to be sent with the new telecommunication medium was to be remembered. So what should they transmit? Morse came up with a quote from the bible, certainly well chosen for an historic occasion like this: “What God had wrought” sent by Morse in Washington to Alfred Vail at…
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The Publication of the First RFC

The Publication of the First RFC

On April 7, 1969, Steve Crocker of University of California, Los Angeles (UCLA), published the first Request for Comment – RFC 1 – entitled “Host Software”. This might be considered as the beginning of the internet, because Request for Comments (RFC) are memoranda describing methods, behaviors, research, or innovations applicable to the working of the Internet and Internet-connected systems. Originally, Steve Crocker’s RFCs were intended to help record unofficial notes on the…
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Charles Wheatstone – From the Concertina to the Telegraph

Charles Wheatstone – From the Concertina to the Telegraph

On February 6, 1802, Charles Wheatstone, English scientist and inventor of many scientific breakthroughs of the Victorian era was born. He is well known for his research in acoustics, electricity, and telegraphy. Family Background and Early Youth Well, if you don’t happen to be an engineer or a physicist, then you have probably never heard of Charles Wheatstone. But we will show you that he was really some remarkable fellow. Charles Wheatstone was born…
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Johannes Gutenberg – Man of the Milennium

Johannes Gutenberg – Man of the Milennium

On February 3, 1468, German blacksmith, goldsmith, printer, and publisher Johannes Gensfleisch zur Laden zum Gutenberg – or simply Johannes Gutenberg – passed away. His invention of mechanical movable type printing started the Printing Revolution and is widely regarded as the single most important event of the modern period. The Art or Printing The art of printing presumably laid its foundation in Asia around the 6th century, when Buddhistic priests in China built printing block…
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