An EKG or also known as ECG (electrocardiogram) machine measures the electrical impulses of the heart. "Cardio" means heart, and "gram" means measurement.electrocardiograph
A recording instrument is that which performs two functions simultaneously-viz., indicating and recording. The measured value will be indicated by the pointer and at the same time it records the reading on a graph or paper.
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Hydrophone
Electrocardiograph: a device used to monitor the electrical activity of the heart. Phonocardiograph: an instrument used to record heart sounds and murmurs. Myocardiograph: a device for recording and analyzing the mechanical activity of the heart muscle.
A seismograph is the instrument used for recording the intensity and duration of an earthquake. It detects and measures the motion and vibrations of the ground caused by seismic waves.
A form of a recording instrument is a microphone. The microphone is used to record vocals over different tracks and beats.
An autochronograph is an instrument intended for the instantanteous self-recording of time.
An ECG or EKG is a recording of the electrical activity of the heart. An echocardiogram is an ultrasound recording of the heart and its blood flow.
You can use a computer to record instruments by connecting the instrument to the computer using an audio interface, opening recording software on the computer, selecting the input source as the instrument, adjusting the recording levels, and then pressing record to capture the sound of the instrument.
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An instrument for recording automatically the variations of atmospheric pressure.