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- https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Astronomy_1e_(OpenStax)/05%3A_Radiation_and_Spectra/5.06%3A_The_Doppler_EffectIf an atom is moving toward us when an electron changes orbits and produces a spectral line, we see that line shifted slightly toward the blue of its normal wavelength in a spectrum. If the atom is mo...If an atom is moving toward us when an electron changes orbits and produces a spectral line, we see that line shifted slightly toward the blue of its normal wavelength in a spectrum. If the atom is moving away, we see the line shifted toward the red. This shift is known as the Doppler effect and can be used to measure the radial velocities of distant objects.
- https://phys.libretexts.org/Bookshelves/University_Physics/Mechanics_and_Relativity_(Idema)/09%3A_Waves/9.07%3A_The_Doppler_EffectThe Doppler effect is a physical phenomenon that most people have experienced many times: when a moving source of sound (say an ambulance, or more exactly its siren) is approaching you, its pitch soun...The Doppler effect is a physical phenomenon that most people have experienced many times: when a moving source of sound (say an ambulance, or more exactly its siren) is approaching you, its pitch sounds noticeably higher then after it passed you by and is moving away. The effect is due to the fact that the observed wavelength (and therefore frequency / pitch) of sound corresponds to the distance between two points of equal phase (i.e., two sequential wavefronts).
- https://phys.libretexts.org/Workbench/PH_245_Textbook_V2/06%3A_Module_5_-_Oscillations_Waves_and_Sound/6.04%3A_Objective_5.d./6.4.01%3A_The_Doppler_EffectThe Doppler effect is an alteration in the observed frequency of a sound due to motion of either the source or the observer. The actual change in frequency is called the Doppler shift.
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/PHY_2040%3A_General_Physics_III/02%3A_Sound/2.3%3A_Doppler_Effect_and_Sonic_BoomsThe Doppler effect is the apparent change in frequency of a wave when the observer and the source of the wave move relative to each other.
- https://phys.libretexts.org/Courses/Georgia_State_University/GSU-TM-Physics_I_(2211)/12%3A_Waves/12.12%3A_The_Doppler_Effectwhere f o is the frequency observed by the stationary observer, f s is the frequency produced by the moving source, v is the speed of sound, v s is the constant speed of the source, and the top sign i...where f o is the frequency observed by the stationary observer, f s is the frequency produced by the moving source, v is the speed of sound, v s is the constant speed of the source, and the top sign is for the source approaching the observer and the bottom sign is for the source departing from the observer.
- https://phys.libretexts.org/Courses/Fresno_City_College/NATSCI-1A%3A_Natural_Science_for_Educators_Fresno_City_College_(CID%3A_PHYS_140)/10%3A_Property_of_Sound_Doppler_Effect_and_Interferences/10.09%3A_Doppler_Effect_and_Sonic_BoomsThe Doppler effect is an alteration in the observed frequency of a sound due to motion of either the source or the observer. The actual change in frequency is called the Doppler shift. A sonic boom is...The Doppler effect is an alteration in the observed frequency of a sound due to motion of either the source or the observer. The actual change in frequency is called the Doppler shift. A sonic boom is constructive interference of sound created by an object moving faster than sound. A sonic boom is a type of bow wake created when any wave source moves faster than the wave propagation speed.
- https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/Book%3A_University_Physics_I_-_Mechanics_Sound_Oscillations_and_Waves_(OpenStax)/17%3A_Sound/17.08%3A_The_Doppler_EffectThe Doppler effect is an alteration in the observed frequency of a sound due to motion of either the source or the observer. The actual change in frequency is called the Doppler shift.
- https://phys.libretexts.org/Learning_Objects/A_Physics_Formulary/Physics/05%3A_WavesWave equations, Green's function methods and electromagnetic waves including waveguides
- https://phys.libretexts.org/Bookshelves/University_Physics/Physics_(Boundless)/23%3A_Electromagnetic_Waves/23.2%3A_Electromagnetic_Waves_and_their_PropertiesMaxwell’s equations help form the foundation of classical electrodynamics, optics, and electric circuits.
- https://phys.libretexts.org/Courses/Grossmont_College/ASTR_110%3A_Astronomy_(Fitzgerald)/03%3A_Radiation_and_Spectra/3.06%3A_The_Doppler_EffectIf an atom is moving toward us when an electron changes orbits and produces a spectral line, we see that line shifted slightly toward the blue of its normal wavelength in a spectrum. If the atom is mo...If an atom is moving toward us when an electron changes orbits and produces a spectral line, we see that line shifted slightly toward the blue of its normal wavelength in a spectrum. If the atom is moving away, we see the line shifted toward the red. This shift is known as the Doppler effect and can be used to measure the radial velocities of distant objects.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/JJC_-_PHYS_110/05%3A_Book-_Physics_(Boundless)/5.09%3A_Sound/5.9.03%3A_Doppler_Effect_and_Sonic_BoomsThe Doppler effect is the apparent change in frequency of a wave when the observer and the source of the wave move relative to each other.
