Is heart a dipole?
Likewise, what is current dipole?
The electrical current dipole can be thought of as an infinitesimally short length of wire which carries a current. The strength of the source is defined by its dipole moment (p).
One may also ask, does ECG records potential difference? The ECG measures the potential difference between the red and green leads as a function of time. A data point can be measured as often as every 5 milliseconds. In medicine, each potential difference is referred to as a “Lead” (short for a pair of wires).
Correspondingly, how does an EKG work physics?
ECG records the electrical activity generated by heart muscle depolarizations, which propagate in pulsating electrical waves towards the skin. Although the electricity amount is in fact very small, it can be picked up reliably with ECG electrodes attached to the skin (in microvolts, or uV).
How does an ECG measure voltage?
The amplitude, or voltage, of the recorded electrical signal is expressed on an ECG in the vertical dimension and is measured in millivolts (mV). On standard ECG paper 1mV is represented by a deflection of 10 mm. Standard ECG paper moves at 25 mm per second during real-time recording.