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- https://phys.libretexts.org/Bookshelves/Waves_and_Acoustics/Book%3A_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/06%3A_Wave_Behavior/6.10%3A_DiffractionSometimes waves don't travel in a straight line, even if their speed does not change (as in the case of refraction). For example, you can hear the conversation in the next room even though you cannot ...Sometimes waves don't travel in a straight line, even if their speed does not change (as in the case of refraction). For example, you can hear the conversation in the next room even though you cannot see the source. This is because sound waves undergo diffraction, bending as they go through the doorway between the two rooms.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/JJC_-_PHYS_110/03%3A_Book-_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/zz%3A_Back_Matter/01%3A_Index
- https://phys.libretexts.org/Bookshelves/Waves_and_Acoustics/Book%3A_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/09%3A_The_Ear_and_Perception/9.01%3A_The_Ear_and_Perception/9.1.04%3A_Hearing_LossThis may cause scars to form in the middle ear region that block or modify the transmission of vibrations along the bone passageway. If a very loud vibration causes the stapes to pierce the cochlea vi...This may cause scars to form in the middle ear region that block or modify the transmission of vibrations along the bone passageway. If a very loud vibration causes the stapes to pierce the cochlea vibrations will no longer be efficiently transmitted to the hair nerve cells. Likewise a very large vibration inside the cochlea may break the hair cells so that they can no longer bend in response to vibrations of the basilar membrane.
- https://phys.libretexts.org/Bookshelves/Waves_and_Acoustics/Book%3A_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/16%3A_Electricity_and_Magnetism/16.01%3A_EandM-_Ohm's_Law/16.1.01%3A_Ohm's_LawThe protons and neutrons (each of which is 1800 times heavier than the electron) are found at the center of the atom in the nucleus. Although the same current (electrons per second) flows out of the c...The protons and neutrons (each of which is 1800 times heavier than the electron) are found at the center of the atom in the nucleus. Although the same current (electrons per second) flows out of the component as flows in, the total current in the circuit is controlled by the resistance of the circuit. If you want make a brighter light bulb, do you want to increase the resistance or decrease the resistance of the filament? (Hint: The brightness increases if more current flows.)
- https://phys.libretexts.org/Bookshelves/Waves_and_Acoustics/Book%3A_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/13%3A_VoiceThe vocal chords are the vibrating part and the throat, mouth, nasal cavities and bronchial tubes constitute the resonance cavities that amplify these vibrations into sound. The fact that we can chang...The vocal chords are the vibrating part and the throat, mouth, nasal cavities and bronchial tubes constitute the resonance cavities that amplify these vibrations into sound. The fact that we can change the shape of some of these cavities at will enables us to produce a wide range of pitches, depending on the initial structure and training.
- https://phys.libretexts.org/Bookshelves/Waves_and_Acoustics/Book%3A_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/12%3A_Percussion/12.01%3A_Percussion_and_DrumheadsThis section allows you to see and manipulate the modes for a square drum head. You can change the modes using the sliders to change the mode numbers n and m. For a membrane there are nodal li...This section allows you to see and manipulate the modes for a square drum head. You can change the modes using the sliders to change the mode numbers n and m. For a membrane there are nodal lines which do not vibrate similar to the nodes we saw on the string but now in two dimensions. You can rotate and enlarge the surface by dragging the mouse over the image. Just like the case for a vibrating string, more than one mode can be present on the two dimensional surface at the same time.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/JJC_-_PHYS_110/03%3A_Book-_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/3.03%3A_Resonance/3.3.01%3A_Resonance/3.3.1.03%3A_Harmonic_Motion_and_Resonance_SimulationSeveral other parameters can also be adjusted. b is the amount of friction in Ns/m (this could be air resistance or sliding friction or friction in the spring itself); vo in \(\t...Several other parameters can also be adjusted. b is the amount of friction in Ns/m (this could be air resistance or sliding friction or friction in the spring itself); vo in m/s is the initial velocity of the mass, and Fo is the magnitude of the driving force in Newtons.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/JJC_-_PHYS_110/03%3A_Book-_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/3.16%3A_Electricity_and_Magnetism/3.16.03%3A_EandM-_Electric_and_Magnetic_ForcesIn this section we study electric and magnetic fields with different orientations to see their effects on neutral, positive and negative charges. For the electric field case the particles have zero in...In this section we study electric and magnetic fields with different orientations to see their effects on neutral, positive and negative charges. For the electric field case the particles have zero initial velocity. In second case with a magnetic field in the x-direction the initial velocity is zero but there is a check-box so that you can give the particles an initial velocity in the +x direction. In the third case the magnetic field is rotated so that it points into the screen.
- https://phys.libretexts.org/Bookshelves/Waves_and_Acoustics/Book%3A_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/03%3A_Resonance/3.01%3A_Resonance/3.1.01%3A_Resonance_ExamplesResonance occurs in an oscillating system when the driving frequency happens to equal the natural frequency. If the frequency of the push equals the natural frequency of the swing, the motion gets big...Resonance occurs in an oscillating system when the driving frequency happens to equal the natural frequency. If the frequency of the push equals the natural frequency of the swing, the motion gets bigger and bigger. We start at low driving frequencies and measure the amplitude of the motion (how far it bounces) at each frequency. So the natural frequency of the system without the vibrator was also 2.5 Hz. Why is the amplitude of the cart larger at one particular frequency?
- https://phys.libretexts.org/Bookshelves/Waves_and_Acoustics/Book%3A_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/13%3A_Voice/13.01%3A_The_Human_Voice/13.1.03%3A_PhonemesExamples in English are found in the words 'eye', 'hay', 'boy', 'low', and 'cow'. A similar sort of thing happens for the gliding consonants which can further be broken down into semivowels such as 'w...Examples in English are found in the words 'eye', 'hay', 'boy', 'low', and 'cow'. A similar sort of thing happens for the gliding consonants which can further be broken down into semivowels such as 'w' and 'y' and liquids such as 'l' and 'r'. In all of these cases the formants change during the creation of the sound.
- https://phys.libretexts.org/Courses/Joliet_Junior_College/JJC_-_PHYS_110/03%3A_Book-_Sound_-_An_Interactive_eBook_(Forinash_and_Christian)/3.09%3A_The_Ear_and_Perception/3.9.01%3A_The_Ear_and_Perception/3.9.1.03%3A_The_Temporal_Theory_of_HearingThe simplest form of the theory says that the vibration causes a nerve to fire every 0.002 s, sending a signal to the brain that is interpreted as a 500 Hz sound. One difficulty ...The simplest form of the theory says that the vibration causes a nerve to fire every 0.002 s, sending a signal to the brain that is interpreted as a 500 Hz sound. One difficulty with this theory is that the nerves attached to the hair cells in the cochlea don't seem to fire as often as the theory would predict (and can't fire at a rate of 20,000 Hz, at the high end of human hearing).
