Add to favourites

On stock 17 pcs

100 years wireless telegraphy Issue number
FDC 117
Date of issue
15.04.1997
Face value
10.00 Sk
Sell price
1.20 €

In the past years of nineteenth century have been registered a several significant discoveries and contrivances that caused development of wireless telegraphy and evolution of further branchs of learning simultaneously. In the 1886 the German physicist Heinrich Hertz proved the existence of electromagnetic waves. On this evidence began to develop the wireless telegraphy and later radiotechnique. From the 1893 Nikola Tesla using so called .Tesla's steams for wireless transformation of reports. The Guglielmo Marchese Marconi was the first one who emited Morse's signs wireless to several hundred metres. In the first time he broadcasted the radio siqnals in 1894. In the...

Show more

Similar products

  • Page of 68
Technical Monuments – Fire-fighting equipment, F. Seltenhofer 1880 Issue number
FDC 421
Date of issue
30.04.2008
Technical Monuments – Bridge Kráľová at Senec Issue number
FDC 406
Date of issue
05.09.2007
Technical Artefacts/Treasury of Museums – Glass Production Issue number
FDC 381
Date of issue
23.06.2006
Technical Artefacts/Treasury of Museums – Cooper Production Issue number
FDC 382
Date of issue
23.06.2006
Technical Monuments - Vychylovka Issue number
FDC 363
Date of issue
22.09.2005
Technical Monuments - Čierny Balog Issue number
FDC 362
Date of issue
22.09.2005
Tatra Omnibus Issue number
FDC 331
Date of issue
30.06.2004
Mining Water System from Špania Valley Issue number
FDC 332
Date of issue
30.06.2004
100 th Anniversary of the Wright Brothers First Flight Issue number
FDC 312
Date of issue
17.11.2003
Banskoštiavnické tajchy - Klinger (Lake Klinger) Issue number
FDC 304
Date of issue
15.07.2003
Banskoštiavnické tajchy - Rozgrund (Lake Rozgrund) Issue number
FDC 305
Date of issue
15.07.2003
Old Winemaking implements (for grape processing) Issue number
FDC 266
Date of issue
24.06.2002
  • Page of 68