Robert von Lieben
Austrian physicist (1878-1913) · Scientists · Died at 34
Robert von Lieben was an Austrian entrepreneur, and self-taught physicist and inventor.
Robert von Lieben is read about 11 times a day, in 10 languages.
A typical day, 30 days to 19 June 2026
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About this person
Lieben and his associates Eugen Reisz and Siegmund Strauss invented and produced a gas-filled triode - the first thermionic valve with a control grid that was designed specifically for amplification rather than demodulation of signals, and is a distant ancestor of the thyratron. After Lieben's death, the "Lieben valve", which is also known in English as the "Lieben-Reisz valve" and in German as the "LRS-Relais", was used in the world's first continuous wave radio frequency generator designed for radio telephony.