In cosmology, baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe, caused by acoustic density waves in the primordial plasma of the early universe. In the same way that supernovae provide a "standard candle" for astronomical observations, BAO matter clustering provides a "standard ruler" for length scale in cosmology. The length of this standard ruler is given by the maximum distance the acoustic waves could travel in the primordial plasma before the plasma cooled to the point where it became neutral atoms (the epoch of recombination), which stopped the expansion of the plasma density waves, "freezing" them into place. The length of this standard ruler (≈490 million light years in today's universe) can be measured by looking at the large scale structure of matter using astronomical surveys. BAO measurements help cosmologists understand more about the nature of dark energy (which causes the accelerating expansion of the universe) by constraining cosmological parameters. (Wikipedia).
AWESOME Electromagnetic force oscillation!!!
In this video i show electromagnetic force oscillation on a ruler. Also i demonstrate the standing wave on a ruler!
From playlist ELECTROMAGNETISM
Physics - Ch 66 Ch 4 Quantum Mechanics: Schrodinger Eqn (45 of 92) Quantum Nature of Oscillator 1
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the quantum mature of the oscillator. I will explain the step-function that represent the energy differences between different energy states. The change of the energy can only happen 1 step an
From playlist PHYSICS 66.1 QUANTUM MECHANICS - SCHRODINGER EQUATION
The Doppler Effect—the sound of coming and going: When a source of sound is moving toward you, successive wavefronts arrive more frequently. You perceive this increase in frequency as a higher tone. Conversely, if the source of sound is moving away from you, the time between wavefronts
From playlist Oscillations and Waves
Βy which factors the oscillation period depends!
The oscillation period in simple harmonic motion!
From playlist MECHANICS
Sound Waves from the Beginning of Time
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ You can check out Google's Science Journal app at http://g.co/ScienceJournal Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support
From playlist The Cosmic Microwave Background Explained!
Secrets of the Cosmic Microwave Background
You can learn more about CuriosityStream at https://curiositystream.com/spacetime PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on P
From playlist The Cosmic Microwave Background Explained!
[DEMONSTRATION] - Coupled Oscillators
Coupled Oscillators are fun to watch. In this quick tutorial Dr. Bruce Denardo of the Physics department at the Naval Postgraduate School demonstrates a very simple looking coupled oscillator system. This coupled oscillator system consists of two pendulums that share the same symmetric ch
From playlist Physics Demonstrations
Physics - Ch 66 Ch 4 Quantum Mechanics: Schrodinger Eqn (49 of 92) How Oscillators Increase Energy
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain how the quantum mechanic oscillator hold on to and increase its energy. Just like a classical oscillator that oscillates back and forth between a minimum (x=-A) and maximum (x=A) amplitude, an
From playlist PHYSICS 66.1 QUANTUM MECHANICS - SCHRODINGER EQUATION
Theramin Physics Demonstration - Nps Physics
The theremin contains two radio-frequency oscillators (or resonant circuits). This is called a "beat frequency oscillator" by physicists and "ring modulation" by some guitarists. One oscillator operates at a fixed frequency, usually about 285 kHz and the other varies between 282 and 285 kH
From playlist In-class Physics Demonstrations
Determining Cosmological Parameters from CMB & LSS - David Spergel
Prospects in Theoretical Physics Particle Physics at the LHC and Beyond Topic: Determining Cosmological Parameters from CMB & LSS Speaker: David Spergel Date: July 25th, 2017
From playlist PiTP 2017
Creative Tension Between the Early and Late Universe - W. Hu - 5/16/2014
Workshop on Primordial Gravitational Waves and Cosmology (May 16 - 17, 2014) Learn more about this workshop: http://burkeinstitute.caltech.edu/workshops Produced in association with Caltech Academic Media Technologies. © 2014 California Institute of Technology
From playlist Walter Burke Institute for Theoretical Physics - Workshop on Primordial Gravitational Waves and Cosmology (May 16 - 17, 2014)
Primordial Black Hole DM - II (Lecture 1) by Yacine Ali Haimoud
PROGRAM LESS TRAVELLED PATH OF DARK MATTER: AXIONS AND PRIMORDIAL BLACK HOLES (ONLINE) ORGANIZERS: Subinoy Das (IIA, Bangalore), Koushik Dutta (IISER, Kolkata / SINP, Kolkata), Raghavan Rangarajan (Ahmedabad University) and Vikram Rentala (IIT Bombay) DATE: 09 November 2020 to 13 Novemb
From playlist Less Travelled Path of Dark Matter: Axions and Primordial Black Holes (Online)
We all know that the universe is big. It's very big...but just how large is it? Join Anthony as he discusses some pretty astounding new theories about the universe, and how we're extremely close to finding out almost exactly how big it is. Read More: A 1-percent measure of galaxies half
From playlist DNews Favorites
Uncovering Dark Matter Physics:from the Early Universe to near Field Cosmology by Vera Gluscevic
PROGRAM LESS TRAVELLED PATH TO THE DARK UNIVERSE ORGANIZERS: Arka Banerjee (IISER Pune), Subinoy Das (IIA, Bangalore), Koushik Dutta (IISER, Kolkata), Raghavan Rangarajan (Ahmedabad University) and Vikram Rentala (IIT Bombay) DATE & TIME: 13 March 2023 to 24 March 2023 VENUE: Ramanujan
From playlist LESS TRAVELLED PATH TO THE DARK UNIVERSE
Mapping the Universe with eBOSS: Will Percival Public Lecture
In his Perimeter Public Lecture webcast on April 7, 2021, cosmologist Will Percival will aim to help the audience grasp the enormity of space using the latest results from the extended Baryon Oscillation Spectroscopic Survey (eBOSS), which created the largest three-dimensional map of the u
From playlist Public Lecture Series
Physics - Ch 66 Ch 4 Quantum Mechanics: Schrodinger Eqn (46 of 92) Quantum Nature of Oscillator 2
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the quantum mature of the oscillator. Remember a small enough particle will have and behave in wave-like properties, and as particles get larger that no longer have wave-like properties. Quant
From playlist PHYSICS 66.1 QUANTUM MECHANICS - SCHRODINGER EQUATION
Cosmology with LSS (Lecture 3) by John Peacock
Program Cosmology - The Next Decade ORGANIZERS : Rishi Khatri, Subha Majumdar and Aseem Paranjape DATE : 03 January 2019 to 25 January 2019 VENUE : Ramanujan Lecture Hall, ICTS Bangalore The great observational progress in cosmology has revealed some very intriguing puzzles, the most i
From playlist Cosmology - The Next Decade
Program Cosmology - The Next Decade ORGANIZERS : Rishi Khatri, Subha Majumdar and Aseem Paranjape DATE : 03 January 2019 to 25 January 2019 VENUE : Ramanujan Lecture Hall, ICTS Bangalore The great observational progress in cosmology has revealed some very intriguing puzzles, the most i
From playlist Cosmology - The Next Decade