Topic: demonstration

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Speed up geologic time with a DIY squeeze box

Build. Observe. Play in the sand and dirt. Making your own easy-to-build squeeze box is fun for lots of different reasons, including educational ones. This Science Snacks video with Eric Muller from The Exploratorium ...

Food of the Enslaved: Michael Twitty cooks recipes from American history

Historic interpreter and culinary historian Michael W. Twitty preserves and promotes the food traditions of enslaved African and African American communities in the 18th and 19th centuries. From the dishes he makes to...

The Engineering of the Drinking Bird

How is a drinking bird like a heat engine? In this video from Engineer Guy Bill Hammack, we can see how this famous drinking/dipping bird toy "exploits a temperature difference to convert heat energy to a pressure dif...

The surprising interactions between copper and neodymium magnets

Experiments with super strong neodymium magnets and copper! These surprising demonstrations of magnetic damping go beyond the magnet through a copper tube demo that we've previously seen. Watch as Night Hawk in Light ...

Universal Calendar Puzzle: Figure out the day of the week for any date ever

Learn how to calculate the day of the week for any date you can think of with this impressive mental trick and some practice. In this It's Okay to Be Smart video, Universal Calendar Puzzle, Joe Hanson demonstrates the...

Getting dressed in 18th century England

What kind of garments did women wear in 18th century England? The above video from CrowsEye Productions, filmed for the Lady Lever Art Gallery just outside of Liverpool, shows the daily dressing routine of a working w...

Liquid Sand Hot Tub: Making a giant fluidized bed of sand

When air is pumped through sand in just the right way, the sand begins to behave a lot like a fluid. As air escapes between the sand particles, items placed in the sand will begin to float. Others will sink. And when ...

How to multiply numbers by drawing lines

Learn how drawing lines and counting can visually calculate multi-digit multiplication problems. This handy math trick, sometimes referred to as the Japanese Multiplication Trick, lets little kids, visual learners, an...

Weaving on Mount Vernon’s 18th Century Loom

See how shirt fabric was woven on a four-poster wooden loom or barn loom in this demonstration at Mount Vernon, President George Washington's plantation home on the Potomac River in Virginia. Master weaver Melissa Wea...

Homemade marble track demonstrations by science teacher Bruce Yeany

Science teacher Bruce Yeany uses this collection of physics marble tracks to introduce and reinforce his students' ideas about perpetual and kinetic energy, motion, acceleration, inertia, and more. The tracks—stringle...

Levitating pumpkins! Halloween superconductor science

What happens when you put a cooled superconductor, in this case, a YBa2Cu3O7 ceramic disk, into a tiny pumpkin and then place them both onto some neodymium magnets? Levitating pumpkin! In this Ri Channel video, su...

Demonstrations of the Coanda Effect

Fluids flowing near a surface tend to follow the shape of the surface. Using Schlieren optics, we can see this behavior. It is known as the Coanda Effect and its explanation depends on viscosity, the frictional forces...

Humphry Davy’s Potassium Volcano

Humphry Davy is one of the best know men of science of the nineteenth century. He isolated nine different chemical elements, was the first person to inhale nitrous oxide and invented the miner's safety lamp known as t...

Sandwich Bag Fire Starter

The intensity of sunlight on Earth is about 1300 Watts per square meter. When you focus the sun's rays using a magnifying glass (or in this case sphere of water) you can increase the intensity roughly ten thousand fol...

How to make a Hollow Mask Illusion

How do we perceive faces? With some balloons, newspaper, some paste for paper mâché, and paints, you can create a hollow mask that appears to follow you as you move back and forth around the room. Rachel and her child...

How does a tunnel boring machine work?

How are new subway tunnels constructed underneath a busy city like Barcelona, Spain? This promotional animation demonstrates how a tunnel boring machine—specifically a Herrenknecht TBM with an Earth Pressure Balance S...

Make Lissajous patterns with DIY sand pendulums or light

Sand pendulums are an easy and beautiful method for students of all ages to learn a bit about the harmonic motion. These devices are easy to build and can be adjusted to give a variety of patterns. A pendulum that beg...

Electromagnetic Levitation Quadcopter

On a visit to Hyperloop One, a Los Angeles-based team working to create a near-vacuum tube-based transportation system, Veratasium's Derek Muller got to check out this Electromagnetic Levitation Quadcopter demo. In th...

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