Topic: demonstration

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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...

What can you do with a large neodymium magnet?

Neodymium magnets are really strong. The larger they get, the more careful you need to be to avoid being pinched or struck from the force of their attraction. This video from Magnetic Games cautiously explores what ca...

Two professors sculpt each other in less than ten minutes

Watch in real time as Professor Cao Chang Xu of Beijing's Central Academy of Fine Arts (CAFA) and Professor Sarath Chandrajeewa of Sri Lanka's University of Visual and Performing Arts go head to head in a friendly fac...

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. ...

Can bumblebees teach each other to pull a string?

This worker bumblebee has been taught that if she pulls the string, she'll be able to get to the artificial blue flower's sucrose solution center. Scientists from the Bee Behavioural and Sensory Ecology Lab at Queen M...

How to Design a Particle Accelerator

What is a particle accelerator and how would you go about designing one? We've heard of the Large Hadron Collider at CERN, but what of the tens of thousands of other accelerators being used in science and medicine? ...

Evolutionary branching in action: Bacteria adapt to antibiotics

Watch E. coli bacteria encounter increasing strengths of antibiotics, the medicine that we use to fight infections or infectious diseases. A team led by Harvard Medical School's Michael Baym set up the video demonstra...

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 ...

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