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The first sunglasses were worn by Chinese judges in the form of smoke coloured quartz lenses, used to hide their eye expressions in court.
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Communication
On 7th April, 1890, A Machine for Making Justified Lines of Type was patented by T. Lanston... Read more »
On 10th March, 1891, Almon Strowger patented his Automatic Telephone-Exchange... Read more »
On 17th November, 1891, Emile Berliner patented the combined telegraph and telephone... Read more »
On 11th April, 1893, A half-tone printing plate was patented by Frederic Ives... Read more »
On 28th April, 1896, Joseph S. Duncan patented his Addressing-Machine... Read more »
On 19th June, 1900, Michael Pupin patented his improvement in long distance telephony... Read more »
On 7th January, 1904, The use of CQD as a radio distress signal is announced... Read more »
On 12th January, 1908, The first long distance radio transmission was broadcast from the Eiffel Tower... Read more »
On 17th October, 1919, The Radio Corporation of America was established... Read more »
On 28th April, 1922, WOI-AM became America’s first licensed educational radio station... Read more »
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