The vacuum magnetic permeability (variously vacuum permeability, permeability of free space, permeability of vacuum), also known as the magnetic constant, is the magnetic permeability in a classical vacuum. It is a physical constant, conventionally written as μ0 (pronounced "mu nought" or "mu zero"). Its purpose is to quantify the strength of the magnetic field emitted by an electric current.It is defined as μ0 = 2⋅α⋅h⋅e−2⋅c−1, with α the fine-structure constant, h the Planck constant, e the elementary charge and c the speed of light.Its dimensions in SI base units are kg⋅m⋅s−2·A−2. Since the redefinition of SI units in 2019 (when the values of e and h were fixed as defined quantities), μ0 is an experimentally determined constant, its value being proportional to the dimensionless fine-structure constant, which is known to a relative uncertainty of about 1.5×10−10, with no other dependencies with experimental uncertainty.Its value in SI units as recommended by CODATA 2018 (published in May 2019) is: μ0 = 1.25663706212(19)×10−6 N⋅A−2 From 1948 to 2019, μ0 had a defined value (per the former definition of the SI ampere), equal to: μ0 = 4π×10−7 H/m = 1.25663706143...×10−6 N/A2 (1 henry per metre = 1 newton per square ampere = 1 tesla metre per ampere) The deviation of the recommended measured value from the former defined value is statistically significant, at about 3.6σ, listed as μ0/(4π×10−7 N⋅A−2)−1= (5.5±1.5)×10−10. The terminology of permeability and susceptibility was introduced by William Thomson, 1st Baron Kelvin in 1872. The modern notation of permeability as μ and permittivity as ε has been in use since the 1950s. (Wikipedia).
Calculating the Magnetic Permeability of Free Space using Parallel Conductors
Using two parallel conductors and the magnetic field interactions between them I was able to calculate the Magnetic Permeability of Free Space.
From playlist Physics
This video will show how to make a vacuum pump, a device that can be used to suck the air out of sealed environments. This is the same pump I use to operate my vacuum cannon seen here: http://youtu.be/CVL99yIB3NQ A clear vacuum chamber such as the one seen in the video can be obtained by
From playlist Practical Projects & Skills
Steam Vacuum - Making/How it Works
A steam vacuum is a vacuum that's create by making steam in a container (I use a microwave and a kettle) and then rapidly cooling it back to water (condensing it), leaving behind a vacuum. This vacuum is a low pressure are that dramatically sucks in more water and, if in a flexible contain
From playlist Science Projects
To learn how I made the vacuum pump used to operate this cannon, take a look at this video: http://youtu.be/UkPLu6mgdWA A vacuum cannon is an interesting physics demonstration that shows how much atmospheric pressure there is at the earths surface, though we do not feel it because our bod
From playlist Science & Experiments
Physics 50 E&M Radiation (14 of 33) Plane E&M Waves and Permeability of Free Space
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain permeability of free space. Next video in series: http://youtu.be/RoRVG4vHA5A
From playlist PHYSICS 50 ELECTROMAGNETIC RADIATION
Progress on vacuum chamber build - helium leak detection, custom flanges
I machined a few custom aluminum adapters for KF/NW vacuum fittings on the lathe this weekend. Next time, I hope to have electrical feedthroughs and should be ready to start depositing material!
From playlist Mechanics
Vacuum Tubes: Episode 1 - The Basics and the Diode
In this episode we finally dig into vacuum tubes. I cover what vacuum tubes are and the fundamentals behind their operation and then demonstrate two different diode type tubes.
From playlist Vacuum Tube Logic
Solar Evacuated Tube Vacuum Tubes DIY Test in the Sun
Solar Evacuated DIY solar tubes. This is part 2 of the Solar Tubes with a control bottle and sun exposure. My website link for the results and videos are http://www.greenpowerscience.com/SOLARTUBE.html
From playlist Evacuated Solar Vacuum Tubes
The Biggest Clue that the Speed of Light Is Constant | Relativity and Electromagnetism (Parth G)
The Special and General Theories of Relativity both work on the assumption that the speed of light is constant for all (inertial) observers. But why? Hey everyone, let's talk about an important axiom in Einstein's theories of relativity: the speed of light being constant. This assumption
From playlist Relativity by Parth G
020 - Magnetic Permeability In this video Paul Andersen explains how the magnetic permeability is the ability of a material to form internal magnetic fields. The magnetic permeability of free space is a constant and is much lower than the magnetic permeability of magnetics. Do you speak
From playlist AP Physics 2 Videos
JEE Main Physics E & M #21 Speed of an E & M Wave in a Dielectric Medium
Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 An electromagnetic wave of frequency 3GHz enters a dielectric medium of relative electric permittivity 2.25 from vacuum. The waveleng
From playlist JEE (MAIN) PHYSICS E&M ELECTRICITY AND MAGNETISM
Astronomy - Ch. 31: What is Space Made of? (7 of 15) Analogy of Waves on a String
Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will compare the Analog of Waves on a String to What is Space Made of? Next video in this series can be seen at: https://youtu.be
From playlist ASTRONOMY 31 WHAT IS SPACE MADE OF?
Here's What Maxwell's Equations ACTUALLY Mean.
Offset your carbon footprint on Wren: https://www.wren.co/start/parthg The first 100 people who sign up will have 10 extra trees planted in their name! Maxwell's Equations are a set of 4 equations that describe how electric and magnetic fields behave within our universe, as well as how th
From playlist Maxwell's Equations EXPLAINED
Cape Cod Trip: Diffusion Sampling
MIT 1.72 Groundwater Hydrology, Fall 2005 View the complete course: http://ocw.mit.edu/1-72F05 Instructor: Charles Harvey License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 1.72 Groundwater Hydrology, Fall 2005
Mod-15 Lec-34 Magnetic Ceramics
Advanced ceramics for strategic applications by Prof. H.S. Maiti,Department of Metallurgy and Material Science,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Kharagpur: Advanced Ceramics for Strategic Applications | CosmoLearning.org Materials Science
Magnetic force between two currents going in opposite directions | Khan Academy
Sal shows how to determine the magnetic force between two currents going in opposite directions. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic-fields/magnetic-field-current-carrying-wire/v/magnetism-12-induced-current-
From playlist Magnetic forces, magnetic fields, and Faraday's law | Physics | Khan Academy
More on Vacuums - Sixty Symbols
We let the particle physics people give their version of what a vacuum is like. More physics at http://www.sixtysymbols.com/ Tony Padilla and Ed Copeland.
From playlist Ed Copeland - Sixty Symbols
Diffusion and osmosis | Membranes and transport | Biology | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/mechanisms-of-transport-tonicity-and-osmoregulation/v/diffusion-and-osmosis Learn about diffusion, osmosis, and concentra
From playlist Cells | MCAT | Khan Academy
What Is The Temperature in a Vacuum Chamber? Is it Hot, Cold or Neither?
In this video I measure the temperature in the vacuum chamber. I did this video in order to simulate what it would be like measuring the temperature of space. I show what happens when I put the thermometer in the vacuum chamber and then talk about what happens and why. Then I talk about ho
From playlist The Action Lab Vacuum Chamber Awesomeness!