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!!
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It was invented by William Einthoven in the early 1903.
Electrocardiogram.
resistance
The first electromagnet was invented in 1825.
Willem Einthoven Invented the accurate ECG using Strings Galvonometer, but Alexander Muirhead made the first prototype.
If the ECG machine malfunctions you will need to redo the test. You can try unplugging the machine and replugging it to see if that resets the system.
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It can be tested with something called an ecg simulator.
The first washing machine was invented in the year 1851. It was the drum washing machine and it was invented by James King.
An ECG or EKG machine is a machine that allows the heart to be studied.The machine records the electrical activity with in the heart.ECG means Electyocardiograph
The lever is generally considered to be the first simple machine invented by humans.
The first adding calculator machine was invented by Blaise Pascal.
Alva J. Fisher had invented the first electric washing machine
James King invented the first drum washing machine in 1846 the first electric washing machine was not made until 1908
ELECTROCARDIOGRAPH
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