Topic: physics

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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...

A home made string shooter & slow moving waves in rope

This string shooter uses two wheels on motors to push a string forward while a tube guides the string back through the wheels, creating a constant loop that appears to defy gravity and demonstrates wave phenomena. ...

Entropy and the Arrow of Time

As we experience it, time flows in a single direction. This is what we think of as the arrow of time, which stretches from the big bang to the present, and off into the future. But our experience of time doesn’t ma...

Do M&Ms dissolve in water?

Yes, yes they do. From the Beauty of Science team led by Yan Liang, enjoy this 4K time lapse video of m&m's artificial colors dissolving in petri dishes of water. Watch more from Beauty of Science.

Can you power your home with a bicycle?

Could you power your house with the energy that's created from pedaling a bicycle? First, let's find out how much energy a house uses and how much energy one bicycling person can store in a battery. Skunk Bear's A...

Cannon cloud collisions for Art & Inactivism

Two clouds rush toward each other and collide before dissipating in this installation by Mitchell F. Chan. Titled Something Something National Conversation (In 2 Characters Or Less), the crashing forms of water vapor ...

Feynman’s Building Blocks of Thermodynamics

Thermodynamics — 'thermo' meaning heat and 'dynamics' referring to work —is the branch of physics that focuses on the relationship between heat and other kinds of energy. This video from The Royal Institution introduc...

Strain Wave Gearing LEGO Great Ball Contraption (GBC) Module

Behold another excellent Great Ball Contraption (GBC) from LEGO enthusiast Akiyuki, this one with Strain Wave Gearing. Akiyuki explains: Strain wave gearing consists of three components: a wave generator, a flex s...

The stories behind Fahrenheit and Celsius

Fahrenheit (°F) is a unit of measurement for temperature. Daniel Gabriel Fahrenheit (1686–1736) is the inventor of the mercury-in-glass thermometer and the aforementioned scale of measurement. In this Veritasium video...

(Skate)ology & The Science of Skateboarding: Grinding

Kick flips, nose grinds, backside board slides... (Skate)ology! Examine gravity, friction, momentum, and other physics concepts thanks to skateboarding demos by pro skaters Boo Johnson, Dane Vaughn, Marquise Henry, Ri...

Welding in Space

On June 3, 1965, after America's first spacewalk was complete, the two Gemini IV astronauts, spacewalker Edward H. White II and command pilot James A. McDivitt, had trouble getting the hatch closed. They managed to, a...

Skittles candy dissolves into rainbows

Science + candy = rainbows! Check out this classic and colorful trick as the artificial candy colors dissolve into hot water-fueled PGYOR stripes. YouTuber Dexter See tried it with awesome results. Here's how: Si...

Building Art Machines with LEGO Technic pieces

From The Tinkering Studio located at San Francisco's Exploratorium, enjoy these pattern making art machines built with LEGO Technic beams, gears, and pins. The Tinkering team wrote up a quick art machines experiment g...

Installing massive statues with engineering and care at the Met

How do you move and install a three ton statue circa 170 BC? How do you move and install a ten ton statue? In these behind-the-scenes time lapse video from the Metropolitan Museum of Art in New York City, we get to se...

Slingshots of the Oceanic

There are many ways of moving through the Universe – of traveling from one point to another over great, even extraordinary distances. There is also a way of using the world for your own ends: taking advantage of slope...

The Amazing Triple Spiral (15,000 dominoes)

Watch this massive triple spiral created with 15,000 precisely placed dominoes fall flawlessly in multiple stages. Pro domino artist Hevesh5 spent 25 hours over eight days building it, her third largest solo project t...

The Guillemot egg, an egg that saves its own life

Guillemots are sea birds that reside in crowded colonies on rocky cliff sides. When they breed, they produce one conical egg which incubates for around 30 days on the precarious cliffside... but guillemots don't make ...

A physical demonstration of gravitational waves

Start with the classic lycra space-time warping demo, add in news of LIGO and The First Observation of Gravitational Waves, then mix it with a drill. In this Ultimate Gravitational Waves Explanation, Steve Mould creat...