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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
What is Physics?
Mr. Andersen explains the importance of physics as a science. History and virtual examples are used to give the discipline context.
Veritasium
Spinning Black Holes
A pulsing black hole in the centre of a distant galaxy sheds light on black hole and galaxy formation. How fast are black holes rotating and how does that rotation change over its life-span?
Astrum
Are We Close to Finding Planet 9?
How and why scientists are searching for Planet X / Planet Nine / Planet 9.
Astrum
The Planet Closer to the Sun than Mercury: Vulcan
...because of Newtonian physics. But Albert Einstein and relativity had other ideas
Professor Dave Explains
Practice Problem: Box Sliding Down a Ramp
Lisa, are you serious? Alright, just one more favor. This one is a little trickier than the previous, because there is some trigonometry involved, beyond the kinematics and friction from the previous problems. What will become of your...
Professor Dave Explains
Practice Problem: Two-Dimensional Two-Body Problem
You're really getting good at building physics toys in your garage! Check this awesome pulley system. You put your physics knowledge to the test and try to make a prediction about what will happen when you let these two blocks go. Will...
Professor Dave Explains
Practice Problem: The Motorcycle Daredevil
Your buddy Max is always attempting crazy stunts! Remember that time, he dove off the tree into the kiddie pool? Well this time he's going to take his motorcycle over a brick wall. Since you know all about projectile motion, and you know...
Professor Dave Explains
Practice Problem: Pushing Boxes
Your friend Lisa needs some help moving, but how long will it take? You're so hungry! Just do a little work with kinematics and Newton's laws, and then it'll be time for tacos.
Professor Dave Explains
Practice Problem: Pendulum Velocity
Now you're really getting advanced with your building skills. Check out this pendulum. It's a good thing we know about potential energy and kinetic energy, because that will allow us to calculate the velocity of the pendulum at any...
Professor Dave Explains
Practice Problem: One-Dimensional Two-Body Problem
Lisa is moving again already! I dunno, I think there were bedbugs. This time you have a different plan, but you will still need kinematics and Newton's laws to find out how much time and effort stand between you and more snacks. Give it...
Professor Dave Explains
Practice Problem: Kinetic and Potential Energy of a Ball on a Ramp
Look at this nifty ramp you made! Let's roll some stuff off of it, shall we? Good thing we know all about potential energy and kinetic energy, because that will allow us to calculate all kinds of things, like the velocity of the ball at...
Professor Dave Explains
Practice Problem: Launching Things With Springs
You're a mischievous little physicist, aren't you? Well I guess there's no harm in projecting a toy into the air, especially if it's part of your scientific research. Given a spring constant and some other information, how high will this...
Professor Dave Explains
Practice Problem: Inelastic Collisions at the Skating Rink
If you're strange enough to hits cats with pendulums, you're strange enough to throw frisbees at the skating rink. As you do this, you realize it's a great time to practice your physics, since you know about inelastic collisions. How...
Professor Dave Explains
Practice Problem: The Mini-Golf Windmill
Who doesn't love mini-golf? Especially when you've got money riding on it, and especially when you've got some physics knowledge up your sleeve. Go ahead and impress your friends by getting through the windmill obstacle, thanks to a...
Professor Dave Explains
Practice Problem: Torque on a Mobile
You had a baby! Hooray! Now it's time to stop building ramps and pulleys and it's time to start building baby stuff. You love astronomy so you decide to make a mobile of the solar system. But in order to get everything to balance out, we...
The Wall Street Journal
The Power Of Creativity In A Data Driven World
Why it's time for a little more magic and a few less numbers in the search for breakthrough ideas.
Professor Dave Explains
Dynamics: What are Forces?
What's a force? No, not THE force. That's from Star Wars. I'm talking about the forces in the universe that make things move. Yes, I know Yoda moved the X-Wing with The Force. Will you quit it? We are talking about the real universe...
Massachusetts Institute of Technology
Mit: Blossoms: Free Fall
This video lesson is an example of "teaching for understanding" in lieu of providing students with formulas for determining the height of a dropped (or projected) object at any time during its fall. The concept presented here of creating...
Massachusetts Institute of Technology
Mit: Blossoms: Gravity at Work
This video lesson highlights how science can be learned from daily life experiences. It emphasizes the ways in which simple laws of physics can be understood from personal observations and experiences, and in fact it demonstrates that we...
Massachusetts Institute of Technology
Mit: Blossoms: The Physics of Pool
The objective of this lesson is to illustrate how a common everyday experience (such as playing pool) can often provide a learning moment. In the example chosen, we use the game of pool to help explain some key concepts of physics. [24:41]