Published “Guidelines for measuring reactive oxygen species and oxidative damage in cells and in vivo” in Nature Metabolism — cited 1,399 times.
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Valdemar Poulsen
Valdemar Poulsen was a Danish engineer and inventor who developed a magnetic wire recorder called the telegraphone in 1898. He also made significant contributions to early radio technology, including the first continuous wave radio transmitter, the Poulsen arc, which was used for a majority of the earliest audio radio transmissions, before being supplanted by the development of vacuum-tube transmi…
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science · Danish engineer · physicist · engineer · technician · also Valdemar Poulsen, Poulsen
Born 23 November 1869 · Died 23 July 1942 · Q442681
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Franz Josef I of Austria - voice recording (1900)
Emperor Franz Josef I of Austria (1830-1916) · Public domain
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2022· 1 entry
2020· 1 entry
Published “Large-Scale Exome Sequencing Study Implicates Both Developmental and Functional Changes in the Neurobiology of Autism” in Cell — cited 2,213 times.
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2019· 1 entry
Published “Identification of common genetic risk variants for autism spectrum disorder” in Nature Genetics — cited 2,415 times.
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2018· 1 entry
Published “Discovery of the first genome-wide significant risk loci for attention deficit/hyperactivity disorder” in Nature Genetics — cited 1,999 times.
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2012· 1 entry
Published “Hydroxyethyl Starch 130/0.42 versus Ringer's Acetate in Severe Sepsis” in New England Journal of Medicine — cited 1,483 times.
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2011· 1 entry
Awarded National Inventors Hall of Fame (2011).
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2009· 1 entry
Published “Generalized linear mixed models: a practical guide for ecology and evolution” in Trends in Ecology & Evolution — cited 7,668 times.
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2008· 1 entry
Published “The Phaeodactylum genome reveals the evolutionary history of diatom genomes” in Nature — cited 1,404 times.
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2005· 1 entry
Published “Epigenetic differences arise during the lifetime of monozygotic twins” in Proceedings of the National Academy of Sciences — cited 2,862 times.
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2002· 1 entry
Published “Systematic identification of protein complexes in Saccharomyces cerevisiae by mass spectrometry” in Nature — cited 2,915 times.
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1995· 1 entry
Published “Histological grading and staging of chronic hepatitis” in Journal of Hepatology — cited 4,111 times.
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1942· 2 entries
Died 1942-07-23.
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Poulsen died on 6 August 1942 in Gentofte.
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1939· 2 entries
Awarded Knight Grand Officer of the Order of the Dannebrog (1939).
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Won Valdemar Poulsen Gold Medal (1939).
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1929· 1 entry
Awarded honorary doctor of the Technical University of Denmark (1929).
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1923· 1 entry
Awarded commander of the Order of the Dannebrog (1923).
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1913· 1 entry
Won Medal of Merit in Gold with Crown (1913).
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1909· 2 entries
Awarded honorary doctor of the Leipzig University (1909).
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Einar Dessau used a shortwave transmitter to establish contact with Paulsen
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1908· 1 entry
Poulsen telephoned 145 miles (230 km) without wires from Ejerg to Lyngby in Denmark, using only 3 kilowatts, and in 1910 telephoned 295 miles (475 km) from Los Angeles to San Francisco in the United States, using 12 kilo
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1907· 4 entries
Won The Royal Danish Academy Gold Medal (1907).
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The system was able to communicate between Lyngby and Newcastle with a 100-foot (30m) mast
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Lee de Forest employed arc transmitters for early radio broadcasting experimentation, but eventually switched to vacuum-tube transmitters
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Was awarded the Gold Medal of the Royal Danish Society for Science, and in 1909 an honorary Doctor of Philosophy degree from the University of Leipzig
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1903· 1 entry
Referred to as the "Poulsen Arc Transmitter", which was widely used for audio radio transmissions before the advent of vacuum tube technology
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1898· 1 entry
And with his assistant, Peder Oluf Pedersen, later developed other magnetic recorders that recorded on steel wire, tape, or disks
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1889· 1 entry
Studied at Vestre Borgerdydskole (1889).
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1869· 1 entry
Born 1869-11-23.
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