SciShow
Solving the Mysteries of Saturn
This week on SciShow Space News, Cassini visited Saturn's moon Dione for the last time, and two little shepherd moons may have helped form some of Saturn's rings.
Bozeman Science
Average Value of the Electric Field
In this video Paul Andersen explains how the average value of the electric field can be determined by dividing the potential difference by the displacement. Equipotential lines can be used to determine the potential in an electric field...
Bozeman Science
Wave Speed
In this video Paul Andersen explains how the wave speed measure the speed of a wave through a medium. The medium determines the speed of the wave. The velocity of the wave is equal to the product of the wavelength and the frequency of...
TED Talks
TED: How a driverless car sees the road | Chris Urmson
Statistically, the least reliable part of the car is ... the driver. In 2015, Chris Urmson was head of Google's driverless car program, one of several efforts to remove humans from the driver's seat. He shares fascinating footage that...
TED-Ed
TED-Ed: A trip through space to calculate distance - Heather Tunnell
Imagine two aliens racing across outer space to their moon. Who can we deem the fastest alien? With DIRT -- or the equation Distance = Rate x Time -- we can calculate their rates, using the distance they traveled and the time they took....
TED-Ed
TED-Ed: The moon illusion - Andrew Vanden Heuvel
Have you noticed how the full moon looks bigger on the horizon than high overhead? Actually, the two images are exactly the same size -- so why do we perceive them differently? Scientists aren't sure, but there are plenty of intriguing...
Crash Course Kids
Testing and Trials
More trials! This time we need to figure out what to do if you don't have all the things you'd like to have to perform your tests. How do you isolate a variable across multiple tests? A good engineer will work to find a way to make it...
SciShow
Can Moons Have Moons?
We all know that many planets have moons orbiting them, but is it possible for those moons have little moons of their own?
TED-Ed
TED-Ed: Why are manhole covers round? - Marc Chamberland
Why are most manhole covers round? Sure it makes them easy to roll, and slide into place in any alignment. But there's another, more compelling reason, involving a peculiar geometric property of circles and other shapes. Marc Chamberland...
SciShow
The Oldest Star in the Universe
Hank tells the story of the mysterious star known as "Methuseleh," and why scientists think that it is the oldest known star in the universe.
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.
SciShow
Why Do Atoms Bond?
SciShow explains what makes atoms bond (and what makes them sometimes seem promiscuous).
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 Kids
Spaced Out
So... how big is the Universe? It's big... really big... no, bigger than that... it's big. In this episode of Crash Course Kids, Sabrina gives us some perspective on this whole Universe thing and how we fit into it.
Bozeman Science
Cell Communication
Paul Andersen discusses cell communication. He begins by explaining how he communicates with other individuals using various forms of electronic communication. He them explains how cells communicate when the distance between them is big,...
TED Talks
TED: What can save the rainforest? Your used cell phone | Topher White
The sounds of the rainforest include: the chirps of birds, the buzz of cicadas, the banter of gibbons. But in the background is the almost-always present sound of a chainsaw, from illegal loggers. Engineer Topher White shares a simple,...
TED Talks
TED: 3 myths about racism that keep the US from progress | Candis Watts Smith
Racism morphs, spreading and hiding behind numerous half-truths and full-blown falsities about where it lives and who embodies it. In this actionable talk, political scientist Candis Watts Smith debunks three widely accepted myths about...
TED-Ed
TED-Ed: Einstein's twin paradox explained | Amber Stuver
On their 20th birthday, identical twin astronauts volunteer for an experiment. Terra will remain on Earth, while Stella will board a spaceship. Stella's ship will travel to visit a star that is 10 light-years away, then return to Earth....
SciShow
Earth Doesn’t Orbit the Sun
Understanding gravity can sometimes be a bit of a balancing act, much like the fundamental laws of physics and how they inform what it is exactly that Earth orbits.
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.
TED-Ed
TED-Ed: How to think about gravity - Jon Bergmann
Did you know that when you fall down, the earth falls up to meet you? Explore the counterintuitive equation that describes gravity.
Bozeman Science
Bond Length and Bond Energy
In this video Paul Andersen explains how the bond length and bond energy are calculated using an energy distance graph. The strength of the bond is determined by the charges in the constituent atoms. As the charge increases the bond...
Bozeman Science
Harmonics
In this video Paul Andersen explains how the wavelength of a standing wave is determined by the boundary length and frequency of the wave. The fundamental frequency has a wavelength double the boundary length. Harmonics are built on the...