A string galvanometer is a sensitive fast-responding measuring instrument that uses a single fine filament of wire suspended in a strong magnetic field...
7 KB (839 words) - 06:17, 26 February 2025
A galvanometer is an electromechanical measuring instrument for electric current. Early galvanometers were uncalibrated, but improved versions, called...
30 KB (3,711 words) - 13:33, 17 July 2025
A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror. The beam of light projected...
10 KB (1,318 words) - 05:21, 18 August 2023
to the electrocardiograph's development. Willem Einthoven's 1903 string galvanometer enabled precise measurement of these signals, revolutionizing cardiography...
96 KB (10,490 words) - 06:07, 1 July 2025
Beginning in 1901, Einthoven completed a series of prototypes of a string galvanometer. This device used a very thin filament of conductive wire passing...
12 KB (1,005 words) - 12:48, 3 July 2025
the hands and feet in pails of salt water, as the contacts for his string galvanometer, the first practical ECG machine. Lead I — This axis goes from shoulder...
4 KB (543 words) - 01:12, 13 June 2024
electrometer by Willem Einthoven. In 1901 to 1905, Einthoven developed the string galvanometer, which could measure and record the heart's electrical activity....
16 KB (1,869 words) - 16:35, 17 July 2025
this chart, designed by Ian Bailey and Jan Lovie. Previous to the string galvanometer, scientists used a machine called the capillary electrometer to measure...
152 KB (18,360 words) - 11:19, 2 July 2025
or in parallel Casing string Drill string Production string Brock string, an instrument used in vision therapy String galvanometer, an instrument that provided...
6 KB (865 words) - 02:31, 9 April 2025
Willem Einthoven, a Dutch physiologist, innovated the use of the string galvanometer for cardiac signal amplification. Significant improvements in amplifier...
16 KB (2,258 words) - 13:29, 9 June 2025
from Ukrainian physiologist Vladimir Pravdich-Neminsky, who used a string galvanometer to create a photograph of the electrical activity of a dog's brain...
30 KB (3,535 words) - 09:13, 24 May 2025
electrocerebrogram in 1912. Forbes reported the replacement of the string galvanometer with a vacuum tube to amplify the EEG in 1920. The vacuum tube became...
132 KB (15,454 words) - 17:21, 17 July 2025
Leonardo Torres Quevedo 1901–1902 – Rationalization of Units 1901–1905 String Galvanometer 1902 – Poulsen-Arc Radio Transmitter 1903 – Vučje Hydroelectric Plant...
19 KB (1,960 words) - 09:22, 20 June 2025
disappointing. He then switched to the string galvanometer and later to a double-coil Siemens recording galvanometer, which allowed him to record electrical...
23 KB (2,830 words) - 06:44, 25 May 2025
and the physiologist Willem Einthoven for his invention of the string galvanometer, which among other things, enabled the development of electrocardiography...
34 KB (2,773 words) - 11:53, 8 July 2025
The French had made an important development. They had taken the string galvanometer and adapted it to record signals from microphones onto photographic...
31 KB (4,058 words) - 04:45, 3 June 2025
the methods of Willem Einthoven in 1911. He constructed the first string galvanometer in America, pioneered vectorcardiography, discovered the ventricular...
3 KB (301 words) - 08:35, 25 September 2024
Physiological Congress in Brussels and then began to make use of a string galvanometer. He published on ECGs and vagus nerve stimulation experiments on...
3 KB (388 words) - 11:45, 28 December 2023
Nationale de la Recherche Scientifique (not printed) 1934 - IJse of the string galvanometer as electrometer. Report to the Centre Nationale de la Recherche Scientifique...
15 KB (2,068 words) - 19:51, 1 October 2024
silhouettes. The Dutch physiologist Willem Einthoven developed the string galvanometer electrocardiograph in the early 20th century, and by 1902, the first...
11 KB (1,085 words) - 03:30, 21 April 2025
method of registering electric currents in nerves and muscles by the string galvanometer that, in turn, Samoilov had learned from Willem Einthoven (1860–1927)...
33 KB (4,557 words) - 22:53, 13 September 2024
phenomena." In 1920 he, with Catharine Thacher, used the Einthoven string galvanometer to record the first scientific application of an electron-tube amplifier...
18 KB (1,975 words) - 23:12, 22 May 2025
Lakey (October 1926) "The use of a resonant shunt with an Einthoven string galvanometer," Journal of Scientific Instruments, vol. 4, no. 1, pages 8–18. S...
9 KB (1,129 words) - 08:48, 10 May 2024
eagerly started his experiments. He used recently invented Einthoven string galvanometer to record brain and muscle electrical signals. As a result of his...
14 KB (1,643 words) - 04:03, 26 March 2025
pulse spacings back into voltages which were applied to a bank of string galvanometers to make an approximately continuous record of each channel on a moving...
14 KB (1,604 words) - 03:09, 14 June 2025
physiologist Willem Einthoven concerning the latter's invention of the string galvanometer and electrocardiography, and Lewis pioneered its use in clinical...
11 KB (1,196 words) - 06:18, 1 July 2025
Electromagnetic oscillographs had replaced the Lippman electrometer and the string galvanometer in electrophysiological experiments. These newly introduced techniques...
8 KB (1,153 words) - 20:29, 19 March 2025
Later, he worked with Dr. Thomas Lewis to set up the Einthoven string galvanometer. He worked with Alfred Ezra Mirsky. One of his main areas of study...
4 KB (412 words) - 15:17, 23 April 2025
Lost for Words, in which various recordings are input into several galvanometers, attached to which are metal springs which vibrate more readily at some...
10 KB (1,148 words) - 10:16, 10 November 2024
pioneers employed rotating mirrors, or vibrating mirrors known as mirror galvanometers. In 1917, French engineer Etienne Oehmichen patented the first electric...
11 KB (1,320 words) - 16:46, 10 November 2024