Waves
=====

A *wave* is a propagating dynamic disturbance (change from equilibrium) of one or more quantities.

.. py:currentmodule:: symplyphysics.laws.waves

**Contents:**

.. toctree::
    :maxdepth: 4

    laws.waves.blackbody_radiation
    laws.waves.relativistic
    laws.waves.vector
    laws.waves.average_power_of_sinusoidal_wave_on_stretched_string
    laws.waves.displacement_in_interfering_waves
    laws.waves.displacement_in_standing_wave
    laws.waves.frequency_of_electron_transition_in_hydrogen
    laws.waves.frequency_shift_from_speed_in_arbitrary_motion
    laws.waves.frequency_shift_from_speed_in_collinear_motion
    laws.waves.fully_constructive_interference_condition
    laws.waves.fully_destructive_interference_condition
    laws.waves.group_velocity_from_dispersion_relation
    laws.waves.intensity_of_sound_wave_via_displacement_amplitude
    laws.waves.light_frequency_change_is_proportional_to_gravitational_potential_change
    laws.waves.peak_wavelength_via_temperature
    laws.waves.phase_of_traveling_wave
    laws.waves.phase_shift_between_two_points
    laws.waves.phase_speed_of_wave_on_stretched_string
    laws.waves.phase_velocity_from_angular_frequency_and_wavenumber
    laws.waves.photoelectron_energy_from_photon_energy
    laws.waves.photon_energy_is_proportional_to_angular_frequency
    laws.waves.photon_energy_is_proportional_to_linear_frequency
    laws.waves.photon_momentum_is_proportional_to_angular_wavenumber
    laws.waves.photon_momentum_is_proportional_to_energy
    laws.waves.position_of_antinodes_in_standing_wave
    laws.waves.position_of_nodes_in_standing_wave
    laws.waves.pressure_amplitude_in_sound_wave
    laws.waves.refractive_index_via_permittivity_and_permeability
    laws.waves.resonant_frequencies_of_stretched_string_with_fixed_ends
    laws.waves.sine_of_mach_cone_angle_is_mach_number
    laws.waves.speed_of_light_from_fundamentals
    laws.waves.speed_of_sound_via_bulk_modulus_and_density
    laws.waves.wave_equation_general_solution_in_one_dimension
    laws.waves.wavelength_from_phase_speed_and_period
    laws.waves.wavelength_of_standing_wave_in_string_with_fixed_ends
    laws.waves.wavespeed_from_medium_permittivity_and_permeability
    laws.waves.wavespeed_from_medium_refractive_index