A Columbia University graduate and then professor earned his place in encyclopedias – there he is referred to as an inventor of frequency modulation and of superheterodyne and super-regenerative radio sets. For those who find radio terms meaningless, let us say that Armstrong’s inventions are still used to broadcast sound in radio and TV. It was Armstrong who developed the FM-broadcasting system and built the first FM-radio station. This is enough to leave one’s trace in history.
Information provided by the Scientific Russia News Agency. Media outlet’s registration certificate: IA No. FS77-62580 issued by the Federal Service for Supervision of Communications, Information Technology and Mass Media on July 31, 2015.
The aquatic ecosystems of the dry land intensively emit greenhouse gases. How and why? Doctor of Physical and Mathematical Sciences Viktor Stepanenko tells us about it
