fundamental harmonic {first harmonic}
amplitude of a complex number
amplitude of a heavenly body
amplitude of accommodation
amplitude of air temperature
amplitude of an energy release rate
amplitude of backward and forward
Amplitude of compound muscle action potential
Amplitude of contraction
amplitude of convergence
amplitude of fluctuating pressure
amplitude of fluctuation
amplitude of fluctuation of the luminous flux
amplitude of free oscillations
amplitude of full pulse
amplitude of ground motion