Bozeman Science
Electric Field of a Sphere
In this video Paul Andersen explains how the electric field strength decreases as the square of the radius as you move away from a point charge, or a uniform distribution of charge on a sphere. This is a direct application of Coulomb's Law.
3Blue1Brown
But why is a sphere's surface area four times its shadow?
Two proofs for the surface area of a sphere
Be Smart
What's The Loudest Possible Sound?
What is the loudest possible sound? What about the quietest thing we can hear? And what do decibels measure, anyway? In this video you'll learn what makes sound
SciShow
What If the Universe Was Shaped Like a Donut?
The universe could be a donut in a fourth spatial dimension. Which would mean that we could potentially see our own galaxy repeated from the past... Our 3D brains aren't ready for this.
Crash Course
Electric Fields: Crash Course Physics
As we learn more about electricity, we have to talk about fields. Electric fields may seem complicated, but they're really fascinating and a crucial part of physics. In this episode of Crash Course Physics, Shini chats about capacitors,...
Bozeman Science
Electric Field of a Dipole
In this video Paul Andersen explains how vector addition can be used to determine the electric field of a dipole.
Bozeman Science
Coulomb's Law
In this video Paul Andersen explains how we can use Coulomb's law to predict the structure of atoms. These predictions can be verified through the use of Photoelectron Spectroscopy (PES). Electron's are help around the nucleus because of...
3Blue1Brown
Why slicing a cone gives an ellipse
A beautiful proof of why slicing a cone gives an ellipse.
3Blue1Brown
Ever wondered why slicing a cone gives an ellipse? It’s wonderfully clever!
A beautiful proof of why slicing a cone gives an ellipse.
SciShow
How Big Is the Universe?
We all know that the universe is mind-bogglingly gigantic, but how *exactly* mind-bogglingly gigantic is it? Let Hank fill you in on the details that scientists have worked out!
SciShow
Rogue Planet Discovered!
Today Hank brings us the news of a unique astronomical discovery - a rogue planet. He also allays our fears of an apocalyptic collision with Earth. So, this new planet is awesome, but it needs a different name - CFBDSIR...
Bozeman Science
ESS2A - Earth Materials and Systems
In this video Paul Andersen describes the four major spheres on planet Earth. The geosphere makes up the mass of the planet and includes the major landforms. The hydrosphere is all of the water and the atmosphere is all of the gases. The...
Crash Course Kids
Let's Take a Hike
Today we're going to take a hike up Mt. Kilimanjaro so we can talk about how the geosphere changes based on many different things. On the same mountain we can travel through many different habitats like rain forests, savannas, and...
Crash Course Kids
Four Spheres Part 1 (Geo and Bio)
In this episode of Crash Course Kids, Sabrina talks about two of the four spheres that make up our planet; The Geosphere and the Biosphere. What's in these spheres? How do they affect us? How do they fit into the puzzle that is Earth?...
Crash Course Kids
Four Spheres Part 2 (Hydro and Atmo)
The second part of our two part tale of the puzzle that is Earth. In this episode, Sabrina talks about the Hydrosphere and the Atmosphere and what is contained in each one. Let's dive in!!! This first series is based on 5th grade...
Crash Course Kids
What On Earth
We've already talked about how the Earth is divided into four spheres (The Hydrosphere, the Biosphere, the Geosphere, and the Atmosphere). But, how do these different sphere interact with each other? In this episode of Crash Course Kids,...
Curated Video
Volume Of Spheres
New ReviewA video entitled "Volume of Spheres" that covers how to calculate the volume of a 3D sphere.
Curated Video
Gravitational Attraction with a Hollowed Sphere – Step-by-Step Force Calculation
Learn how to calculate the gravitational force between a hollowed-out sphere and a point mass using mass subtraction and superposition—an essential technique for solving complex gravitation problems in AP and IB Physics.
Curated Video
Gravitational Force Equilibrium in a Triangle (Physics Problem & Solution)
Explore this classic gravitation problem where three masses form an equilateral triangle and a fourth mass is placed at the center. Learn how to calculate the mass required for gravitational force balance and why doubling the central...
Curated Video
What If You Fell Through the Earth? | Shell Theorem, Gravity Train & 42-Minute Tunnel Explained
Explore what happens if you fall straight through Earth—using Newton’s Shell Theorem, simple harmonic motion, and real gravitational data. Understand why every straight tunnel gives the same 42-minute trip, and how gravity behaves inside...
Curated Video
How to Use Your Knees to Strike for UFC Training
Howcast - Learn how to use your knees to strike from kickboxing champion Phil Nurse in this Howcast UFC training video.
Curated Video
L.A. Noire Walkthrough Part 66: "The Quarter Moon Murders" (4 of 7)
Howcast - Check out part 67 of this L.A. Noire walkthrough and beat "The Quarter Moon Murders" with this online demo.
Curated Video
Tarot & the Kabbalistic Tree of Life
Howcast -Learn about the kabbalistic tree of life from tarot expert Ellen Goldberg, M.A. in this Howcast video.