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ID number:445222
 
Author:
Evaluation:
Published: 18.08.2011.
Language: Latvian
Level: Secondary school
Literature: 3 units
References: Not used
Extract

Radio vēsture
1888. gadā, kad Heinriha Herca eksperimenti, kuros viņš pierādīja elektromagnētisko viļņu eksistenci, ieinteresēja fiziķus visā pasaulē. Daudzi zinātnieki sāka meklēt iespējas, kā pilnveidot elektromagnētisko viļņu izstarotāju un uztvērēju.
1913. gadā izveidoja nerimstošo elektromagnētisko svārstību ģeneratoru, kas bija svarīgs posms radiosakaru attīstībā. Līdz ar to bija iespējams pārraidīt ne tikai telegrāfa signālus, kurus veidoja īsāki un garāki elektromagnētisko viļņu impulsi, bet arī runu vai mūziku.…

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