Topic: frequency

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Invisible Nature: Code of the Treehopper

Hiding in plain sight and deceptively still, treehoppers have evolved an ingenious way to communicate—using a complex series of vibrations. Now, scientists are listening in and starting to crack the treehopper code. A...

H is for Hertz – Circuit Playground

How does the internet work on your laptop, phone, and other wireless devices without any connecting cables? How does your television remote work? In this episode of Circuit Playground, Adabot learns about electromagne...

Why does a frozen lake sound like a Star Wars blaster?

Ice can make all sorts of sounds: cracking, crackling, musical booooooms... and that pew! pew! Star Wars blaster sound. How? In this episode of NPR's Skunk Bear, we learn about acoustic dispersion and how the phenomen...

DISHDANCE, a time lapse for The Skyglow Project

Created for The Skyglow Project, an astrophotography book and time lapse series by Gavin Heffernan and Harun Mehmedinovic, DISHDANCE observes massive radio telescopes during the day and night. The project also capture...

Macro Video of Iridescent Soap Bubbles – Stereokroma

The next time you get the opportunity to blow some soap bubbles, be sure to take a long, close look at them. Those ever-changing rainbows sliding around across the surfaces of the bubbles can be spellbinding... like a...

The Inverted Glass Harp

We love glass harps – instruments made from wine glasses that are filled with different amounts of water to create a series of desired pitches. In The Inverted Glass Harp, Dan Quinn shows us that empty glasses can als...

Resonance, forced vibration, and a tuning forks demo

A U-shaped fork of steel first invented in 1711 by trumpet player John Shore, the tuning fork is a tool produces a specific note that helps musicians keep their instruments in tune. They also are a great conversation ...

The Octobass – What does this huge instrument sound like?

Want a low-end rumble in your orchestra? You need an octobass, a bowed-string instrument that's so massive, it requires a platform and a series levers to play. Only three were originally made by their inventor Jean-Ba...

A waterless & chemical-free sound wave fire extinguisher

Using low-frequency sound waves to put out flames, this experimental fire extinguisher is the work of George Mason University engineering seniors Viet Tran and Seth Robertson. Watch as they Pump Up the Bass to Douse a...

Dara Ó Briain’s Science Club: Breaking a glass with sound

From Dara Ó Briain’s Science Club, watch as Professor Mark Miodownik finds the resonant frequency of a wine glass, as indicated by the small vibrating slip of paper balancing on the edge. When he cranks up the volume,...

CYMATICS: Science + music = audio frequency visualizations

With help from a Chladni Plate, vibrating liquid on a speaker dish, a hose pipe optical trick, ferrofluid, a Ruben's Tube, and a Telsa Coil, New Zealand musician Nigel Stanford showcases audio frequency visualizations...

A pendulum wave demonstration with bowling balls

Thanks to these 16 bowling balls hung from a 20 foot wooden frame in the mountains of North Carolina, we can see what a large-scale pendulum wave apparatus looks (and sounds) like. Filmed by Maria Ikenberry, she also ...

F is for Frequency – Circuit Playground

Who better than a talking oscilloscope to explain what frequency is and why it's so important for radio and sound waves! Come learn with ADABOT in this episode of Circuit Playground: F is for Frequency.

Mercury Hz: Sound waves passing around & through mercury

From “science on a budget” YouTuber Nick Moore, watch this drop of mercury being vibrated from ~120Hz down to ~10hz. We've seen resonance demonstrated before in Chladni Pattern v...

Citadel Physics: Wave Pendulum

jtotheizzoe: Get hypnotized by this wave pendulum… seriously, I can’t look away. A wave pendulum like this is built of equally weighted objects suspended by different (and carefully cal...

Chladni Plate: Sand Vibration Patterns

Hey kids! Go rest your hands on a speaker playing loud music. Feel the sound vibrations? Good. Now you might want to adjust your volume for this one. Sound frequencies produce a variety of incre...


 
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