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A string galvanometer is a sensitive fast-responding measuring instrument that uses a single fine filament of wire suspended in a strong magnetic field to measure small currents. In use, a strong light source is used to illuminate the fine filament, and the optical system magnifies the movement of the filament allowing it to be observed or ...
Willem Einthoven was born in Semarang on Java in the Dutch East Indies (now Indonesia), the son of Louise Marie Mathilde Caroline de Vogel and Jacob Einthoven. [2] His father, a doctor, died when Willem was a child. His mother returned to the Netherlands with her children in 1870 and settled in Utrecht.
Williams traveled to Holland to study the methods of Willem Einthoven in 1911. [ 2 ] He constructed the first string galvanometer in America, pioneered vectorcardiography , discovered the ventricular vulnerable period, and first determined the 60-Hz current required to produce ventricular fibrillation with body-surface electrodes.
Graphical representation of Einthoven's triangle. Einthoven's triangle is an imaginary formation of three limb leads in a triangle used in the electrocardiography, formed by the two shoulders and the pubis. [1] The shape forms an inverted equilateral triangle with the heart at the center. It is named after Willem Einthoven, who theorized its ...
Willem Einthoven: Physiology or Medicine 1924 Leiden University: Gertrude B. Elion: Physiology or Medicine 1988 Wellcome Research Laboratories: John Franklin Enders: Physiology or Medicine 1954 Boston Children's Hospital: Harvard Medical School: Robert F. Engle: Economics 2003 New York University: François Englert: Physics 2013 Université ...
1887 – Willem Einthoven invents electrocardiography (ECG/EKG) [100] [101] 1890 – Emil von Behring discovers antitoxins and uses them to develop tetanus and diphtheria vaccines. 1895 – Wilhelm Conrad Röntgen discovers medical use of X-rays in medical imaging
Different organisations are responsible for awarding the individual prizes; the Royal Swedish Academy of Sciences awards the Prizes in Physics, Chemistry, and Economics; the Swedish Academy awards the Prize in Literature; the Karolinska Institute awards the Prize in Physiology or Medicine; and the Norwegian Nobel Committee awards the Prize in Peace. [3]
Christiane Nüsslein-Volhard in 2007 A preparation of the cuticle from a Drosophila embryo, similar to those examined by Nüsslein-Volhard. Note the bands of denticles on the left hand side (towards the head) of each segment.
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