Spinodal decomposition both complete one cycle per second—but they represent different frequencies in the Fourier transform. Hence, frequency no longer measures the number of cycles per unit time, but is closely related.) If A(β) is the amplitude of a Fourier component of wavelength λ and wavenumber β = 2π/λ the spatial variation in composition can be expressed by the Fourier integral: in which the coefficients are defined by the inverse relationship: Substituting, we obtain on equating coefficients: This is an ordinary differential equation that has the solution: in which "A(β)" is the initial amplitude of the Fourier component of wave wavenumber β
Per-unit system are the same. Here, the per-unit voltages of the two sides are E and E respectively. formula_28 ‘E and E are the voltages of sides 1 and 2 in volts. N is the number of turns the coil on side 1 has. N is the number of turns the coil on side 2 has. V and V are the base voltages on sides 1 and 2. formula_29 For current, we can prove that the per-unit currents of the two sides are the same below. formula_30 where I and I are the per-unit currents of sides 1 and 2 respectively. In