Rarefaction is the reduction of an item's density, the opposite of compression. Like compression, which can travel in waves (sound waves, for instance), rarefaction waves also exist in nature. A common rarefaction wave is the area of low relative pressure following a shock wave (see picture). Rarefaction waves expand with time (much like sea waves spread out as they reach a beach); in most cases rarefaction waves keep the same overall profile ('shape') at all times throughout the wave's movement: it is a self-similar expansion. Each part of the wave travels at the local speed of sound, in the local medium. This expansion behaviour contrasts with that of pressure increases, which gets narrower with time until they steepen into shock waves. (Wikipedia).
B04 Example problem of simple harmonic oscillation
Solving an example problem of simple harmonic oscillation, which requires calculating the solution to a second order ordinary differential equation.
From playlist Physics ONE
What's the Strangest Stock Footage in Existence?
Most of my videos require stock footage to make. This often means that I'm exposed to some weird content. This is some of the weirdest stock footage I've collected over the years. Enjoy.
From playlist Concerning Everything
An general explanation of the underactive thyroid.
From playlist For Patients
Here is a demonstration of the doppler effect.
From playlist All Demonstrations
Yes. I make mistakes ... rarely. http://www.flippingphysics.com
From playlist Miscellaneous
AMAZING physics demonstrations. Oscillation, collision and conservation of momentum (science)
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From playlist MECHANICS
Waves - properties: GCSE revision
GCSE level Waves covering: Waves, sine wave, reflection, transverse wave, longitudinal wave, wavelength, frequency, period, amplitude, peak, trough, crest, vibrations, compressions, rarefactions, speed, object, image, ray, incident ray, reflected ray, hertz, hz, wave equation, seismic wave
From playlist GCSE Physics Revision
5 Basic Connections Between Physics and Music | What the Stuff?!
Human beings can intuitively recognize the physics of music. Check out these basic connections between music and physics that explain what we’re hearing! 10 Connections Between Physics and Music http://entertainment.howstuffworks.com/10-connections-physics-music.htm Video Attribution: G
From playlist Our 5 Senses
Propagation of Sound | Don't Memorise
How does sound really travel through a medium? What happens to the particles of the medium? Let us find out in this video! ✅To access all videos Sound, enroll in our full course now: https://infinitylearn.com/microcourses?utm_source=youtube&utm_medium=Soical&utm_campaign=DM&utm_content=W
From playlist Physics
Axel Saenz: The Speed of a Second Class Particle in the ASEP
In this talk, we discuss the application of the Yang-Baxter equation for the quantum affine lie algebra $U_{q} \left (\widehat{ {\mathfrak{sl}}_{n+1}} \right )$ to interacting particle systems. The asymmetric simple exclusion process (ASEP) is a continuous-time Markov process of interacti
From playlist Probability and Statistics
Convolution Theorem: Fourier Transforms
Free ebook https://bookboon.com/en/partial-differential-equations-ebook Statement and proof of the convolution theorem for Fourier transforms. Such ideas are very important in the solution of partial differential equations.
From playlist Partial differential equations
Physics 20 Sound and Sound Waves (1 of 53) What is Sound?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the basics of sound waves and what sound is. Next video in this series can be seen at: https://youtu.be/BA4LwzIs9H0
From playlist MOST POPULAR VIDEOS
Helmholtz Resonator and other Maintained Oscillators
Dr. Andres Larraza demonstrates a number of maintained oscillators mind-blowing physics demonstrations including the Helmholtz resonator, the escape mechanism (How a grandfather clock works), coupled oscillators (phase-locked oscillators), Franklins Chimes, a maintained oscillator circuit
From playlist Physics Demonstrations
Understanding Longitudinal and Transverse Waves, Wavelength, and Period using Graphs
Four #MechanicalWaves #Graphs are introduced and used to understand and demonstrate #TransverseWaves, #LongitudinalWaves, #Wavelength, and #Period. Want Lecture Notes? https://www.flippingphysics.com/wave-graphs.html This is an AP Physics 1 Topic. 0:00 Intro 0:06 The four mechanical wave
From playlist IB Physics 4.2: Traveling Waves
CDIS 4017 - Terminology Part 1 (DONE)
Chaya Guntupalli (Nanjundeswaran) Ph.D. CDIS 4017 - Speech and Hearing Science I ETSU Online Programs - http://www.etsu.edu/online
From playlist ETSU: CDIS 4017 - Speech and Hearing Science I | CosmoLearning Audiology
Sound & Ultrasound: GCSE revision
GCSE level covering: ultrasound, longitudinal waves, compression, rarefaction, velocity, frequency, wavelength, middle C, hertz, kilohertz, megahertz, gigahertz, media, kidney stones, prenatal scans, oscilloscope, SONAR, depth
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B03 Simple harmonic oscillation
Explaining simple (idealised) harmonic oscillation, through a second-order ordinary differential equation.
From playlist Physics ONE
Teach Astronomy - Transverse and Longitudinal Waves
http://www.teachastronomy.com/ Light and other forms of electromagnetic radiation are transverse waves. This means that the oscillations of the electric and magnetic fields takes place perpendicular to the direction of motion of the wave energy. A familiar example of a transverse wave is
From playlist 05. Quantum Theory and Radiation