An echocardiogram gives a visual picture of the heart muscle and chambers.
An electrocardiogram (EKG) produces a graph showing the electrical impulses of the heart's contractions. It shows various wave forms of the electrical strength and pattern.
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The waveform for an electrocardiogram is the measurement of the heart beat. The waveform of an electromyogram is the measurement of the response of muscles.
difference between detector and diode
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difference between series is one pathway through circuit,difference between parralal is more then one pathway through circuit.
What the difference between envelop and coherent detection of AM signals
There is no potential difference between identical charges