Teach Astronomy - Cosmic Mass to Light Ratio
http://www.teachastronomy.com/ Another way to look at the mass density of the universe is in terms of the cosmic mass to light ratio. Mass to light ratio is defined as the ratio of the mass, in solar units, to the luminosity, in solar units, so for the Sun by definition M over L is one.
From playlist 23. The Big Bang, Inflation, and General Cosmology 2
Teach Astronomy - Mass to Light Ratio
http://www.teachastronomy.com/ Astronomers characterize galaxies by their mass to light ratio or mass to luminosity ratio. This is given in units of the Sun's mass and luminosity where by definition the Sun has M divided by L of one. Galaxies however are composite stellar systems consist
From playlist 19. Galaxies 2
http://www.teachastronomy.com/ The mass to light ratio of a galaxy is a good way of characterizing its mean age. We can see this with examples from individual stars. A star a hundred times the mass of the Sun, a short-lived, hot, luminous, blue star, has a mass to light ratio of ten to t
From playlist 19. Galaxies 2
why is the speed of light a precise value?
The speed of light exactly 299792458 m/s. It was set that value. This video looks how it got to this point and also explores some of the more recent attempts at measuring the speed of light, including Michelson and Eveson. I also explore how the meter definition was refined over time and l
From playlist Nature of Light
Special Relativity E3 Relationship between Mass and Energy
The mass energy equivalence.
From playlist Physics - Special Relativity
Special Relativity E1 Relationship between Mass and Energy
The mass energy equivalence.
From playlist Physics - Special Relativity
Are Mass and Weight the same thing? | Physics | Don't Memorise
Do you know the difference between Mass and Weight? Watch this video to understand the concepts of mass and weight! To get access to the entire course based on Gravitation, visit our website here: https://infinitylearn.com/microcourses?utm_source=youtube&utm_medium=Soical&utm_campaign=DM
From playlist Physics
Special Relativity E2 Relationship between Mass and Energy
The mass energy equivalence.
From playlist Physics - Special Relativity
Physics - Mechanics: Gravity (8 of 20) Determine The Density Of Earth
Visit http://ilectureonline.com for more math and science lectures! In this video I will calculate the density of the Earth.
From playlist PHYSICS 18 GRAVITY
Numerical relativity: Survey of results by Harald Pfeiffer
PROGRAM: GRAVITATIONAL WAVE ASTROPHYSICS (ONLINE) ORGANIZERS : Parameswaran Ajith, K. G. Arun, Sukanta Bose, Bala R. Iyer, Resmi Lekshmi and B Sathyaprakash DATE: 18 May 2020 to 22 May 2020 VENUE: Online Due to the ongoing COVID-19 pandemic, the original program has been cancelled. Howe
From playlist Gravitational Wave Astrophysics (Online) 2020
From playlist Courses and Series
Evidence for Dark Matter | Introductory Astronomy Course 9.04
Welcome to Astronomy: Exploring Time and Space, a course from Professor Impey, a University Distinguished Professor of Astronomy at the University of Arizona. Learn about the foundations of astronomy in this free online course here on YouTube. This video is part of module 9, Galaxies. Wan
From playlist Introductory Astronomy Module 9: Galaxies
Time invariance of total stellar mass-cluster mass relation by Yen-Ting Lin
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
Mass to Light Ratio - Sixty Symbols
It's a funny symbol that looks like a seagull - but it helps astronomers learn what galaxies are made of. More at http://www.sixtysymbols.com/ Featuring Mike Merrifield.
From playlist Mike Merrifield - Sixty Symbols
Lecture 14 | Introduction to Robotics
Lecture by Professor Oussama Khatib for Introduction to Robotics (CS223A) in the Stanford Computer Science Department. Professor Khatib shows a short video on A Finger-Shaped Tactile Sensor Using An Optical Waveguide, then lectures on Robot control and the one degree of freedom. CS223A
From playlist Lecture Collection | Introduction to Robotics
Gravitational wave astronomy using supermassive black holes (Lecture 3) by Antoine Klein
Abstract: In this set of pedagogical lectures aimed at graduate students, I will describe the current status of our understanding of the physics of supermassive black holes focussing on modeling techniques - analytic, numerical and semi-empirical that are guided by observational data. In
From playlist Astrophysics of Supermassive Black Holes 2019
Theoretical Overview of Muon g-2 by Motoi Endo
DISCUSSION MEETING HUNTING SUSY @ HL-LHC (ONLINE) ORGANIZERS Satyaki Bhattacharya (SINP, India), Rohini Godbole (IISc, India), Kajari Majumdar (TIFR, India), Prolay Mal (NISER-Bhubaneswar, India), Seema Sharma (IISER-Pune, India), Ritesh K. Singh (IISER-Kolkata, India) and Sanjay Kumar S
From playlist HUNTING SUSY @ HL-LHC (ONLINE) 2021
Gravitation (3 of 17) Mass vs Weight, An Explanation
Explains the difference between mass and weight. Very important. No they are not the same thing. Mass is a measure of the amount "stuff" something is made of, the amount of atoms for example. Weight is a measure of the force of attraction between two object that have mass. Of course mass
From playlist Gravitation: Orbital Velocity, Orbital Period, Potential Energy, Kinetic Energy, Mass and Weight