You need to know about these quantities used in waves - what they mean, the symbols used for them and the units used to measure them. Don't get confused with this quantity frequency. It is not a ...

Using high-frequency sound waves to ... can be controlled by altering the frequency, polarization and amplitude of the applied sound wave. This approach offers far more rapid tuning than a ...

Because the atrial rate is so fast, and the action potentials produced are of such low amplitude, P waves will not be seen ... as there is no pattern to their frequency. This is commonly described ...