You may think of particle accelerators as massive underground tunnels like the Large Hadron Collider. But a new generation of accelerators are small enough to fit on a coin. Now the challenge is making them useful.
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Many ancient sites had some truly amazing effects on sound waves, suggesting that early cultures may have built spaces to evoke certain sensation. And by studying the acoustics of these structures, we can learn new things...

What's cooler: A vaccine for one of the deadliest bacterial infections around or a holodeck? Well, this week we got a step closer to BOTH!

In this episode of Crash Course Chemistry, Hank discusses what Molecules actually look like and why, some quantum-mechanical three dimensional wave functions are explored, he touches on hybridization, and delves into sigma and pi...

Hank brings us the story of the electron and describes how reality is a kind of music, discussing electron shells and orbitals, electron configurations, ionization and electron affinities, and how all these things can be...

Music plays a big part in many of our lives. Whether you just like to listen or you enjoy playing an instrument, music is powerful. So what is music? How does it work? What are the physics of music? In this episode of Crash Course...

Sound waves vibrate more than just our eardrums, they can also make visual art!

In this video Paul Andersen explains how standing waves are created through the reflection and interference of traveling waves. Destructive interference creates areas of no movement called nodes. Constructive interference creates areas...

The wave model of the electron can be used to explain the Bohr model. Electrons are found in certain orbits because they interfere with themselves and create standing waves. When the wavelengths don't match up with a whole integer they...

In this video Paul Andersen explains how waves interact when moving through one another. Unlike particles waves can interfere both constructively and destructively. The amount of interference is determined through the superposition...

Can you feel them in your fingers? How about in your lungs? Vibrations are all around us, so let’s explore some everyday vibrations!

Guitar masters like Jimi Hendrix are capable of bending the physics of waves to their wills, plucking melody from inspiration and vibration. But how do wood, metal, and plastic translate into rhythm, melody, and music? Oscar Fernando...

It's not magic; it's science! Build your own acoustic levitator to make objects float in midair using invisible sound waves.<br/>

Niels Bohr's model of the atom introduced the idea of quantised orbits for electrons. In these, electrons occupy stable energy levels and either give off or take in photons when they move between these levels. This model was able to...

In part two of our series on Theory of Everything, we explain particle physics using string theory.

We create a Rubens\u2019 Tube to demonstrate the movement of sound waves. A tube lined with holes is filled with propane and connected to a speaker. We light the gas coming from the holes and play different frequencies and volumes of...

This is a Short Answer question but is not included in either AP Physics C curricula.

My solutions to Free Response Question #5 from the 2016 AP Physics 1 Exam. This is a standing waves question which requires you to determine the relationship between tension and wave speed. Also included are my reflections on how to get...

My solutions to Free Response Question #5 from the 2019 AP Physics 1 Exam. This question is about standing waves in open and closed pipe instruments. Also included are my reflections on how to get perform better on the exam.

The video is a lecture presentation on experiments to find the speed of a wave on a wire. The presenter first explains the theory behind the experiment, involving the formation of a stationary wave and the measurement of wavelength to...

Ultrasonic levitation, IN YOUR HOME! Learn how an acoustic levitator works and how to make one.

Okay, it's time to dig into quantum mechanics! Don't worry, we won't get into the math, we just want to understand what the math represents, and come away with a new and improved view of the electron as both a circular standing wave and...

The relationship between wavelength and frequency is determined. The number of waves, wavelength, and wave speed at each standing wave frequency is determined. The wave speed is measured independent from the standing waves.

Standing longitudinal waves are demonstrated and compared to an animation to help with understanding what the heck is going on.