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∙ 11y agoWilliam Sturgeon
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When was first ECG machine invented?
in the 20th century The Heart's beat is caused by voltage changes in it's muscle fibres. The changes can be detected by a voltmeter. This electrical activity was first recorded by the Dutch physiologist William Einthoven in 1903 at Leyden University using a primitive galvanometer. To this day, the Electrocardiogram remains basically the same, despite many modifications. 1903 is when Einthoven invented the first Electrocardiograph!!
Who Invented laser guns?
the laser was invented.....
Who invented transformers?
Henry Orenstein invented transformers.
When were wind turbines invented?
The first wind turbine was invented in 1888. The fellow who invented it was Charles F. Brush.
Who invented cork boards?
bottle corks were invented in 1789.
What is the function of electrometer in separation of isotopes?
An electrometer is not used for the isotopic separation.
How will you show that electrons are negatively charged.name the instrument?
This instrument is the electrometer.
An electric charge can be detected by an instrument called?
electrometer
What did Madame Curie invent?
Curie's efforts, with her husband, Pierre Curie, led to the discovery of polonium and radium and, after Pierre's death, the development of X-rays.
What equipment did Marie Curie use to discover polonium and radium?
She used an electrometer.
How do you determine pH o f solutions?
By a pH-electrometer (instrumental, accurate, expensive) or by 'pH indicator'-paperstrips
What the standard unit used to express a quantity of charges?
The unit of measurement for the quantity of an electrical charge is called an electrometer. The quantity of charge can also be measured in directly by a ballistic galvanmotere.
What is the difference between Aston's mass spectrometer and Dumpsters mass spectrometer?
Aston got photos on the plate. Dempster's plate was connected with electrometer and he meashured the ion current die to V (voltage the ion had passed)
What does the acronym 'fide' stand for?
The acronym FIDE stands for many things. Some things the acronyms FIDE stands for are Foundation for Investment and Development of Exports, Flame-Ionization Detector Electrometer, Formally Integrated Data Environment and many more.
How did Marie curie discover radioactive sustances?
In fact, Bequerel had first discovered radioactivity from uranium in 1896, by fogging of photographic plates. The Curies however used an electrometer which her husband had invented, and which reacted to ionisation in the air, which was produced by radioactivity. This enabled her to deduce that radioactivity came from the atoms of the substance, not some sort of chemical reaction. She went on to discover radium in pitchblende, which was the first knowledge of it, and a number of other achievements. See the link below for more information on her discoveries.
What is the detector of nuclear radiation?
A radiac detects nuclear radiation. There are many types of radiac, some are: Geiger counter, ionization survey meter, scintillation counter, film badge dosimeter, electroscope dosimeter, electrometer, drift meter, cloud chambers, etc.
What has the author John Cunningham McLennan written?
John Cunningham McLennan has written: 'On the susceptibility of mixtures of salt solutions' -- subject(s): Accessible book 'Note on the use of sensitive quadrant electometers' -- subject(s): Electrometer 'On the magnetic properties of Heusler's alloys' -- subject(s): Accessible book
