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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/Bookshelves/University_Physics/Radically_Modern_Introductory_Physics_Text_I_(Raymond)The idea for a “radically modern” introductory physics course arose out of frustration with the standard two-semester treatment of the subject. It is basically impossible to incorporate a significant ...The idea for a “radically modern” introductory physics course arose out of frustration with the standard two-semester treatment of the subject. It is basically impossible to incorporate a significant amount of “modern physics” (meaning post-19th century!) in that format. The authors feel that an introductory physics course for non-majors should make an attempt to cover the great accomplishments of physics in the 20th century, since they form such an important part of our scientific culture.
- 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/Under_Construction/Energy_and_Matter%3A_Our_Quantum_World_(Knop)/03%3A_Momentum_and_Angular_Momentum/3.02%3A_MomentumKinetic energy is a quantity that’s associated with motion. However, kinetic energy itself is not always conserved. If a cue pool ball runs into another ball, and the cue ball stops dead, the other ba...Kinetic energy is a quantity that’s associated with motion. However, kinetic energy itself is not always conserved. If a cue pool ball runs into another ball, and the cue ball stops dead, the other ball goes off with the same speed that the cue ball came in at.
- https://phys.libretexts.org/Under_Construction/Energy_and_Matter%3A_Our_Quantum_World_(Knop)/02%3A_EnergyIt is used in everyday parlance to mean a number of different things, many of which bear at most a passing resemblance to the term as used in physical science. In a physical system, you can identify t...It is used in everyday parlance to mean a number of different things, many of which bear at most a passing resemblance to the term as used in physical science. In a physical system, you can identify the forms of energy that are present, and calculate a number that represents the amount of energy there is for each of these forms. That is, in any interaction, the total amount of energy afterwards is exactly the same as the total amount of energy beforehand.
- https://phys.libretexts.org/Under_Construction/Energy_and_Matter%3A_Our_Quantum_World_(Knop)/zz%3A_Back_Matter/20%3A_GlossaryExample and Directions Words (or words that have the same definition) The definition is case sensitive (Optional) Image to display with the definition [Not displayed in Glossary, only in pop-up on pag...Example and Directions Words (or words that have the same definition) The definition is case sensitive (Optional) Image to display with the definition [Not displayed in Glossary, only in pop-up on pages] (Optional) Caption for Image (Optional) External or Internal Link (Optional) Source for Definition "Genetic, Hereditary, DNA ...") (Eg. "Relating to genes or heredity") The infamous double helix CC-BY-SA; Delmar Larsen Glossary Entries Definition Image Sample Word 1 Sample Definition 1
- https://phys.libretexts.org/Under_Construction/Energy_and_Matter%3A_Our_Quantum_World_(Knop)/11%3A_Noncommuting_Operators_and_Uncertainty
- 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/Bookshelves/University_Physics/Radically_Modern_Introductory_Physics_Text_I_(Raymond)/07%3A_Matter_Waves/7.07%3A_ProblemsThe probability for an electron to pass through either one of the slits and reach point A on the screen is P, assuming that the other slit is blocked. If there are two slits open, what is the probabil...The probability for an electron to pass through either one of the slits and reach point A on the screen is P, assuming that the other slit is blocked. If there are two slits open, what is the probability for an electron to reach point A according to the conventional rule that probabilities add? (This is the result one would expect if, for instance, the particles were machine gun bullets and the slits were, say, 5 cm apart.)
