The rayleigh is a unit of photon flux, used to measure faint light emitted in the sky, such as airglow and auroras. It was first proposed in 1956 by , Franklin E. Roach, and . It is named for Robert Strutt, 4th Baron Rayleigh (1875–1947). Its symbol is R (also used for the röntgen, an unrelated unit). SI prefixes are used with the rayleigh. One rayleigh (1 R) is defined as a column emission rate of 1010 photons per square metre per column per second. Note that rayleigh is an apparent emission rate, as no allowances have been made for scattering or absorption. The night sky has an intensity of about 250 R, while auroras can reach values of 1000 kR. The relationship between photon radiance, L, (in units of photons per square metre per second per steradian) and I (in units of rayleighs) is (Wikipedia).
Determining values of a variable at a particular percentile in a normal distribution
From playlist Unit 2: Normal Distributions
More Standard Deviation and Variance
Further explanations and examples of standard deviation and variance
From playlist Unit 1: Descriptive Statistics
Percentiles, Deciles, Quartiles
Understanding percentiles, quartiles, and deciles through definitions and examples
From playlist Unit 1: Descriptive Statistics
(ML 7.7.A1) Dirichlet distribution
Definition of the Dirichlet distribution, what it looks like, intuition for what the parameters control, and some statistics: mean, mode, and variance.
From playlist Machine Learning
Finding the Unit Vector of a Vector in Standard Form
Learn how to determine the unit vector of a vector in the same direction. The unit vector is a vector that has a magnitude of 1. The unit vector is obtained by dividing the given vector by its magnitude. #trigonometry#vectors #vectors
From playlist Vectors
Mean v Median and the implications
Differences between the mean and median suggest the presence of outliers and/or the possible shape of a distribution
From playlist Unit 1: Descriptive Statistics
Learn How to Find the Unit Vector Given a Vector as a Linear Combination
Learn how to determine the unit vector of a vector in the same direction. The unit vector is a vector that has a magnitude of 1. The unit vector is obtained by dividing the given vector by its magnitude. #trigonometry#vectors #vectors
From playlist Vectors
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http://www.freemathvideos.com In this video series I will show you how to find the unit vector when given a vector in component form and as a linear combination. A unit vector is simply a vector with the same direction but with a magnitude of 1 and an initial point at the origin. It is i
From playlist Vectors - Understanding
A function space view of overparameterized neural networks - Rebecca Willet, University of Chicago
Contrary to classical bias/variance tradeoffs, deep learning practitioners have observed that vastly overparameterized neural networks with the capacity to fit virtually any labels nevertheless generalize well when trained on real data. One possible explanation of this phenomenon is that c
From playlist Statistics and computation
Janet Scheel: "High Rayleigh Number Convection in a Slender Cylinder for Prandtl Number of 1"
Transport and Mixing in Complex and Turbulent Flows 2021 "High Rayleigh Number Convection in a Slender Cylinder for Prandtl Number of 1" Janet Scheel - Occidental College Abstract: We report results from direct numerical simulations of turbulent Rayleigh-Benard convection for a Prandtl n
From playlist Transport and Mixing in Complex and Turbulent Flows 2021
Introduction to Turbulence by Jayanta K. Bhattacharjee (Part 4)
ORGANIZERS: Amit Apte, Soumitro Banerjee, Pranay Goel, Partha Guha, Neelima Gupte, Govindan Rangarajan and Somdatta Sinha DATES: Monday 23 May, 2016 - Saturday 23 Jul, 2016 VENUE: Madhava Lecture Hall, ICTS, Bangalore This program is first-of-its-kind in India with a specific focus to p
From playlist Summer Research Program on Dynamics of Complex Systems
What is the Ultraviolet Catastrophe?
This video provides a detailed explanation of the ultraviolet catastrophe and Max Planck's solution to the problem. The work of Rayleigh and Jeans is discussed in detail, as well as the quantum hypothesis proposed by Planck. You can help support this channel via the Physics Explained Patr
From playlist Quantum Physics
Horizontal convection: ocean energetics, heat flux,... - Young - Workshop 1 - CEB T3 2019
Young (Scripps Institution of Oceanography, UC, San Diego) / 10.10.2019 Horizontal convection: ocean energetics, heat flux, upper-bounds and scaling I’ll begin by surveying the current understanding of the mechanical energy balance of the ocean i.e., the identification of the main s
From playlist 2019 - T3 - The Mathematics of Climate and the Environment
Turbulent superstructures in Rayleigh-Benard convection by Ambrish Pandey
Summer school and Discussion Meeting on Buoyancy-driven flows DATE: 12 June 2017 to 20 June 2017 VENUE: Ramanujan Lecture Hall, ICTS, Bengaluru Buoyancy plays a major role in the dynamics of atmosphere and interiors of planets and stars, as well as in engineering applications. This field
From playlist Summer school and Discussion Meeting on Buoyancy-driven flows
Turbulent Free Convection by Jaywant Arakeri
Turbulence from Angstroms to light years DATE:20 January 2018 to 25 January 2018 VENUE:Ramanujan Lecture Hall, ICTS, Bangalore The study of turbulent fluid flow has always been of immense scientific appeal to engineers, physicists and mathematicians because it plays an important role acr
From playlist Turbulence from Angstroms to light years
Jörg Schumacher: "Supergranule aggregation for constant heat flux-driven turbulent convection"
Transport and Mixing in Complex and Turbulent Flows 2021 "Supergranule aggregation for constant heat flux-driven turbulent convection" Jörg Schumacher - Technische Universität Ilmenau Abstract: Turbulent flows are highly chaotic and characterized by a cascade of irregular vortices, howev
From playlist Transport and Mixing in Complex and Turbulent Flows 2021
Beyond the well-mixed room: Natural convection
MIT RES.10-S95 Physics of COVID-19 Transmission, Fall 2020 Instructor: Martin Z. Bazant View the complete course: https://ocw.mit.edu/RES-10-S95F20 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP62-vPzt_GMdZRflJPjNdspG Beyond the well-mixed room: Natural convection Li
From playlist MIT RES.10-S95 Physics of COVID-19 Transmission, Fall 2020
What is the formula for a unit vector from a vector in component form
http://www.freemathvideos.com In this video series I will show you how to find the unit vector when given a vector in component form and as a linear combination. A unit vector is simply a vector with the same direction but with a magnitude of 1 and an initial point at the origin. It is i
From playlist Vectors
Video lectures for Transport Phenomena course at Olin College. This video introduces the idea of dimensional analysis and provides a few example problems in fluid mechanics.
From playlist Lectures for Transport Phenomena course