PBS
The Strange Universe of Gravitational Lensing
Niels Bohr, a Danish Physicist said “Everything we call real is made of things that cannot be regarded .” Is what we see perceived to be real or is it an illusion? In the world of our mind’s eye, light travels in a straight line. In...
PBS
What Survives Inside A Black Hole?
Black holes are the result of absolute gravitational collapse of a massive body: a point of hypothetical infinite density surrounded by an event horizon. At that horizon time is frozen and the fabric of space itself cascades inwards at...
SciShow
This Planet Survived the Death of its Star
When stars die, they tend to take everything around them with them. But new evidence appears to show a planet orbiting a white dwarf, and we’re not sure how it survived! Plus, experiments designed to detect dark matter might be capable...
SciShow
Eclipses That Don't Eclipse
Here on Earth, we’re used to seeing both lunar and solar eclipses. But further out are eclipses that don’t behave at all the way we expected them to.
SciShow
The Oort Cloud Believe it or Not
Learn about the Oort Cloud with host Reid Reimers on this episode of SciShow Space!
Curated Video
Exploring Potential Energy
Dr. Forrester describes potential energy by examining such energies as gravitational, sound, and thermal. She also observes potential energy by conducting an experiment.
Curated Video
Potential Energy
Potential Energy compares and contrasts gravitational potential energy and elastic potential energy by examining characteristics of each.
Flipping Physics
Speed of a Proton in a Uniform Electric Field
Conservation of energy is used to determine the final speed of a proton released at rest in a uniform electric field.
Flipping Physics
#7 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about how the gravitational force on a ball changes as it moves up away from a small asteroid.
Flipping Physics
#20 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about using Newton's 2nd Law to determine the velocity of two identical stars in a fixed orbit around their mutual center of mass.
Flipping Physics
#18 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about conservation of energy in a pendulum.
National Institute of Standards and Technology
Operating Principles of the NIST 4 Watt Balance Source
The watt balance lets researchers determine the mass of an object indirectly by determining two quantities: the strength of the magnetic field, and the current running through a coil of wire.
Flipping Physics
Introductory Conservation of Mechanical Energy Problem using a Trebuchet
Learn how to use the Conservation of Mechanical Energy equation by solving a trebuchet problem.
ProEdify
Understanding Non-Contact Forces: Gravity, Electricity, and Magnetism
This video provides an overview of non-contact forces, such as gravitational, electric, and magnetic forces, explaining how they act at a distance without physical contact between objects. It covers the concepts of force magnitude,...
Flipping Physics
Review of Mechanical Energy and Momentum Equations and When To Use Them!
By the time students learn about all the equations for mechanical energy, momentum, impulse and impact force, they often start to confuse the equations with one another. This is a straightforward, simple look at all of those equations...
Next Animation Studio
GRAIL mission: NASA twin probes to measure moon's gravity field
The Gravity Recovery and Interior Laboratory mission, or GRAIL, consists of twin spacecraft in a polar orbit around the moon. GRAIL will map the moon's gravitational field by measuring changes in the distance between the two spacecraft...
Visual Learning Systems
Gravity: Video Review
Gravity is all around us. This interesting program introduces students to the force of gravity by using easy-to-understand examples of this force at work. The role of gravity in our solar system is also explored. Concepts and...
Curated Video
Gravitational Field Strength and Weight: Understanding the Force of Gravity
This video is a lecture on the concept of gravitational field strength and its associated force. The lecturer explains how gravity causes the attraction between all masses and how the strength of the gravitational field around a...
Next Animation Studio
Real life 'Death Star' observed destroying planets in its own solar system
A dying star is ripping apart planets in its own solar system, according to a team of astronomers who published a paper yesterday in the journal Nature. The star, called WD 1145+017, is a white dwarf in the constellation Virgo. The...
NASA
Hubble finds a Black Hole Igniting Star Formation in a Dwarf Galaxy
Black holes are often described as the monsters of the universe—tearing apart stars, consuming anything that comes too close, and holding light captive. Detailed evidence from NASA's Hubble Space Telescope, however, shows a black hole in...
Flipping Physics
AP Physics 1: Work, Energy and Power Review
Review of the topics of Work, Energy, Power and Hooke’s Law covered in the AP Physics 1 curriculum.
NASA
Einstein Ring Spotted by Hubble
This image, taken with the Hubble Space Telescope, shows a distant galaxy located in the constellation Fornax. It is the largest and one of the most complete Einstein rings ever discovered. This object’s unusual shape is the result of...
NASA
Hubble's 32nd Anniversary: An Eclectic Galaxy Grouping
NASA is celebrating the Hubble Space Telescope’s 32nd birthday with a stunning look at five galaxies, a close-knit collection called the Hickson Compact Group 40. This amazing assembly includes a giant elliptical galaxy, glowing with...