3: Phasors — Read — Invisible Network

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3.1: Introduction to Phasors
3.2: Phasor Representation of Signals
3.3: Beating between Tones
3.4: Multiphase Power
3.5: Lissajous Figures
Lissajous figures are figures that are turned out on the face of an oscilloscope when sinusoidal signals with different amplitudes and different phases are applied to the time base (real axis) and deflection plate (imaginary axis) of the scope.
3.6: Sinusoidal Steady State and the Series RLC Circuit
Phasors may be used to analyze the behavior of electrical and mechanical systems that have reached a kind of equilibrium called sinusoidal steady state. In the sinusoidal steady state, every voltage and current (or force and velocity) in a system is sinusoidal with angular frequency ω . However, the amplitudes and phases of these sinusoidal voltages and currents are all different.
3.7: Light Scattering by a Slit
3.8: Numerical Experiment (Interference Patterns)

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