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Topic: demonstration
Shattering glass with the World’s Largest Horn
How do horns amplify sound? Why are they flared at the ends? And how do airhorns work? Mark Rober wanted to find out so he spent eight months building a massive air horn... perhaps the world's largest horn. In this...
Thermal expansion sphere and ring demonstrations
If you ever had trouble twisting open a jar lid that's stuck, try running it under some hot water. When you try again, it will most likely pop open with a twist thanks to thermal expansion. Most (but not all) matter w...
How to make a flipbook
Animation is made from a series of still images that, when played quickly in succession, create the illusion of movement. This is best illustrated in the pages of a flipbook, especially a flipbook that you've drawn yo...
Cat’s Cradle: How to play with two people
Learn how to play a two-person version of Cat's Cradle, a very old analog string game, with these step-by-step instructions from YouTuber Mom's Minivan. The easy-to-follow tutorial shows three basic string shapes play...
How to make a rocket
"What's the best scientific formula for a powerful rocket with oxidizer and fuel?" In this video clip from Bang Goes The Theory Series 5, via BBC Earth Lab, we get a quick peek at the mix of chemistry and physics that...
The Meissner Effect: How to levitate a neodymium magnet
A neodymium magnet cube sits on a surface of yttrium barium copper oxide—YBa2Cu3O7, nicknamed YBCO—inside the bottom of a styrofoam cup. A small amount of liquid nitrogen is poured slowly over the YBCO. As it cools, t...
What happens to balloon animals in liquid nitrogen?
How can you fit a bunch of balloon animals into a small container? Add some liquid nitrogen into the mix, as demonstrated in this video by Real Physics Live, the YouTube channel for Texas A&M University's Department o...
A colorful Chladni pattern demonstration
Watch as Chladni patterns form on a metal plate, a teaching demonstration "spiced up" with colored sand by associate professor of physics at UNC Charlotte skullsinthestars. The video is accompanied by Prelude from Sui...
The Shoe-Tying Robot
What might five mechanical engineering students create with two motors, Arduino, and a $600 budget? How about a shoe tying machine? Winning an annual design competition with Japan's Meijo University, University of...
Use a 9-volt battery to break water into its elemental components
In the 1987 miniseries The Ring of Truth: An Inquiry into How We Know What We Know, Philip Morrison proves that a water molecule is composed of two hydrogen (H) atoms & one oxygen (O) atom with a simple demonstration....
Dressing in late 14th century armor
A video showing how to dress in and wear armor (harness) from late 14th century. The harness is a detailed reconstruction based on the effigy of the Black Prince (1330-1376) in the Canterbury Cathedral, other relevant...
Observing the angle of repose with DIY physics devices
The angle of repose or critical angle of repose is how steep various types of materials can be piled without slumping. The steepness of the side of a pile is determined by the amount of friction between the particles ...
How to collect black sand with a magnet
If you're ever at a beach with some black sand in the mix, run a magnet through the sand to see if the black sand sticks. Exploratorium educator Ken Finn demonstrates this experiment with a magnet and a plastic cup at...
The Coupled Pendulum, a physics demonstration
See the simple laws of physics at work: Two pendulums swing on a string, transferring energy from one to the other and back again. This demonstration by MarkHacks, made with cardboard, screw hooks, tape, string, and t...
How to make a DIY Duct Tape Coin Pouch
With an x-acto knife or scissors, a cutting mat or ruler, a ziplock bag, and two rolls of duct tape—pick two colors you like—you can create your own DIY Duct Tape Coin Pouch in less than 10 minutes. Sally shows us how...
Math in Motion: Playing with a desktop Galton Board
This delightful little device brings to life the statistical concept of normal distribution. As you rotate the Galton Board on its axis, you set into motion a flow of steel beads that bounce with equal probability to ...
How to make a turquoise goblet
How did the Venetians make turquoise glass in the late 1400s? Find out as Bill Gudenrath, glass specialist at the Corning Museum of Glass, uses traditional glass blowing methods to create a replica of the extremely ra...
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 ...
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