Topic: measurement

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ExpeRimental: Candle Chemistry

In this episode of ExpeRimental, Lisa and Josh explain the unseen as they make a flame jump through the air. Josh also measures how long it takes for covered candles to extinguish on their own. There's more activity i...

Train tracks: How to replace railway ties without pulling up the rails

Railroad tracks are made of three main parts: the long steel rails that the trains run on, wooden or concrete railroad ties (US) or sleepers (UK), and the track ballast that helps bear a train's weight and keeps the t...

How Small Is An Atom?

Using a strand of hair, your fist, rice and sand grains, as well as the room you're sitting in right now (assuming it's not a huge gymnasium), let's try to visualize the basic building block of everything around us: A...

3D-Printed “Blooming” Fibonacci Zoetrope Sculptures

Animation is a trick of the eye, and we're often reminded of this when we get to see animation happen right in front of us. 3D-printed zoetrope sculptures by math and Fibonacci-inspired artist and designer John Edmark...

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...

How do we study the stars & how do we measure extreme distances?

How can we know so much about other galaxies? What are they made of? How big are they? How far away are they from Earth? "Want to know the secrets of the universe? Just follow the light." These two TED Eds fro...

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 ...

Eva Szasz’s Cosmic Zoom (1968)

From director Eva Szasz and the National Film Board of Canada, Cosmic Zoom (1968) is a wordless journey that attempts to demonstrate the scale of the universe. Beginning with a boy boating on the Ottawa River, we trav...

Everything You Need to Know About Planet Earth

When we wake up, eat breakfast, get ready for school or work, and head out the door, we may not be thinking about how incredibly unique our small, wet rock of a planet is. But the Earth is incredibly unique. Learn som...

The Ring of Truth: Noodles & the principle of halving

Chef Kin Jing Mark demonstrates how to make super-thin noodles and helps introduce the principle of halving in this clip from the PBS miniseries The Ring of Truth: An Inquiry Into How We Know What We Know - Atoms (198...

How Big is the Moon? A Kurzgesagt visualization

How Big is the Moon Really? It might be much bigger (or much smaller) than you'd imagine. Kurzgesagt explains.

Sugar: Hiding in plain sight

We know that sugar is a big part of candy, ice cream, and sweet drinks, but did you know that added sugars are included in 3/4 of the 600,000+ products found in the average grocery store? And...

How Do We Know How Old the Sun Is?

How Do We Know How Old the Sun Is? The Royal Observatory, Greenwich, and animation studio Beakus join together to explain how Kepler and Newton’s laws help us figure out the weight of the ...

Bill Nye Bikes the Distance Between Planets

Bill Nye The Science Guy bikes down a long road in wide open country to demonstrate a scale model of the solar system – a classic clip. Total distance of his ride to Pluto, back before Pluto ...

The Science of Snowmaking

From The New York Times, Olympics 2014: The Science of Snowmaking:  Machines make snow the same way nature does, by freezing water droplets. But they do it a few feet above the ground, rat...

TED Ed: The Pangaea Pop-up

This papercraft pop-up book illustrates how South America and Africa used to be connected, how the supercontinent Pangaea broke apart 200 million years ago, how the Earth's seven primary tecto...

Adrian Esparza’s Wake and Wonder at the Pérez Art Museum Miami

From the Pérez Art Museum Miami’s exhibition, AMERICANA: Formalizing Craft, this is Adrian Esparza’s Wake and Wonder, a 12 x 30 foot installation rewoven from a Mexican serape bla...

How can we know anything about distant exoplanets?

How can we know the size, composition, and atmospheric makeup of distant exoplanets? NASA explains the details in this Alien Atmospheres video.  By observing periodic variations in the pare...

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