PBS
Does Gravity Require Extra Dimensions?
It’s been 120 years since Henry Cavendish measured the gravitational constant with a pair of lead balls suspended by a wire. The fundamental nature of gravity still eludes our best minds - but those secrets may be revealed by turning...
Be Smart
Where On Earth Do You Weigh The Least?
You may have heard that a kilogram of feathers weighs the same as a kilogram of steel, but that all depends on where you weigh them. This video is all about the difference between mass and weight, and how weirdly awesome Earth’s gravity...
MinutePhysics
Minute Physics: What is Gravity?
In this episode, we discuss the basic nature of gravity, one of the four fundamental forces in our universe.
SciShow
5 Baffling Mysteries About the Universe
At the beginning of the 20th century, many scientists thought that we had learned all there was to know about physics. The problem is, the better we get at measuring things and building models of our universe, the more we discover that...
Bozeman Science
Calculating the Gravitational Force
In this video Paul Andersen explains why astronauts are weightless. He also explains how Newton's Universal Law of Gravitation can be used to calculate the gravitational force between objects.
SciShow
The New Space Weather Mission
The universe gets a little weirder, and more dangerous, every time we study it. Understanding space weather, which can mess with our communications systems, will take strategic planning to monitor.
TED-Ed
TED-ED: If matter falls down, does antimatter fall up? - Chlo_ Malbrunot
Like positive and negative, or debit and credit, matter and antimatter are equal and opposite. So if matter falls down, does antimatter fall up? Chloe Malbrunot investigates that question by placing two atoms - one made of matter, and...
PBS
How to Estimate the Density of the Moon in Majora's Mask
Gabe breaks down the steps for how he determined the density of the moon in Majora's Mask.
PBS
General Relativity & Curved Spacetime Explained!
We've been through the first few episodes of our crash course on general relativity, and came out alive! But it's officially "time" for CURVED spacetime. Join Gabe on this week's episode of PBS Space Time as he discusses Newton and...
MinutePhysics
What is Gravity?
In this episode, we discuss the basic nature of gravity, one of the four fundamental forces in our universe.
Bozeman Science
Gravitational Mass
In this video Paul Andersen explains how the gravitational mass is a measure of the force on an object in a gravitational field. The gravitational mass is based on the amount of material in an object and can be measured to a standard kg...
Bozeman Science
Gravitational Force
In this video Paul Andersen explains how an object with mass placed in a gravitational field experiences a gravitational force. On the Earth this gravitational force is known as weight. The gravitational force is equal to the product of...
TED-Ed
TED-Ed: How far would you have to go to escape gravity? - Rene Laufer
Every star, black hole, human being, smartphone and atom are all constantly pulling on each other due to one force: gravity. So why don’t we feel pulled in billions of different directions? And is there anywhere in the universe where...
Crash Course Kids
Down to Earth
In this episode of Crash Course Kids, Sabrina talks about why things on the bottom of the Earth, don't just fall off into space. Plus... PENGUINS! This first series is based on 5th grade science. We're super excited and hope you enjoy...
Bozeman Science
PS2B - Types of Interactions
Paul Andersen explains how objects interact when touching and at a distance. Electromagnetic forces are very important when objects are touching and fields explain both electromagnetic and gravitational forces. The strong and weak...
PBS
Is Gravity An Illusion?
Most of us take gravity as an assumed part of our living realities, but why? Basic physics introduces us to the concept of gravity from a Newtonian sense, but when you start factoring Einstein into an understanding of gravity, things get...
Bozeman Science
Gravitational Forces
In this video Paul Andersen explains how gravitational forces differ from the other three fundamental forces; electromagnetic, strong, and weak. Gravitational forces are always attractive and operate at all scales. Even though...
Crash Course
Newtonian Gravity: Crash Course Physics
I'm sure you've all heard about Isaac Newton and that apple that fell on his head and how that was a huge deal to our understanding of gravity. Well... let's talk about that. In this episode of Crash Course Physics, Shini sits down to...
Bozeman Science
Potential Energy
In this video Paul Andersen explains how conservative forces can be used to store potential energy in an object or a system. The work done is equal to the amount of potential energy in the object. The following conservative forces are...
MinutePhysics
Our Ignorance About Gravity
Thanks to the Heising Simons Foundation (https://www.hsfoundation.org/) for their support of this video, and of short range gravity research. This video is about how little we know about the behavior of gravity at short length and...
Be Smart
Does The Moon Really Orbit The Earth?
According to Newton's law of gravitation, the sun should "pull" way harder on the moon than the Earth does. So does the moon actually orbit the Earth? Why?
Bozeman Science
Nuclear Reactions
Mr. Andersen contrasts nuclear reactions to chemical reactions. He explains the four main forces of nature; including gravity, electromagnetism, strong, and weak nuclear forces. He also explains how fusion differs from fission.
Bozeman Science
Gravitational Field Strength
In this video Paul Andersen explains how the gravitational field strength is directly related to the mass of the object and indirectly related to the square of the distance from the center of mass. The equation for gravitational field...
Bozeman Science
Forces
Forces are pushes or pulls on an object. Forces can be determined by measuring the motion of an object. If an object accelerates then a force is present.