PBS
Will The Big Bang Happen Again (and Again)?
New ReviewHow did the universe begin? How can something come from nothing? One way to “solve” this most difficult of philosophical conundrums is to avoid it altogether. Maybe the universe didn’t begin. Maybe the Big Bang was just one in an endless...
Bozeman Science
Scalar Field
In this video Paul Andersen explains how scalar fields can be used to show the distribution of scalar quantities. The most important scalar fields in AP Physics 2 deal with electric potential. Scalar addition can be used to combine...
Curated Video
Cosmic Inflation: Solving Big Bang Mysteries
New ReviewSummary: The Big Bang theory: In the beginning, the universe was packed tightly together into a point of infinite density. It then exploded into the universe we see today. This is actually INCORRECT. There was no explosion. There was no...
Curated Video
Anti-Gravity: the Force that's Tearing Space Apart
New ReviewSUMMARY What if gravity repelled instead of attracted? Repulsive gravity may have shaped the entire history of our universe. For centuries gravity was defined by Isaac Newton’s Law of Universal Gravitation which said, “every object in...
Khan Academy
Khan Academy: Viewing G as Value of Earth's Gravitational Field Near the Surface
Sal Khan explains g as the value of Earth's gravitational field near the surface rather than the acceleration due to gravity near Earth's surface for an object in freefall. [7:30]