Topic: measurement

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Mathematical Present Wrapping with Katie Steckles

When you're wrapping a variety of shapes, it can be a challenge to wrap them neatly, but with a bit of measuring, thoughtful folding, and practice, your cuboid, pentahedron or equilateral triangular prism, cylinder, o...

How Google[x]’s Project Loon Tests Its Giant Internet Balloons

What if massive pumpkin-shaped balloons could bring internet access to rural and remote locations around the planet? Google[x], which also developed Google Glass and Google's Driverless Car, has a team working on gian...

Meet the Balloonatics – SciFri goes to Macy’s Parade Studio

How are Macy's Thanksgiving Day Parade balloons designed, calculated, fabricated, tested, and retested before they show up on the streets of Manhattan on Thanksgiving morning? From Science Friday in 2011, visit the 'b...

Why do autumn leaves cause train delays? – Liz Bonnin

Why do 'leaves on the line' cause train delays, especially in autumn? The serious danger comes from a series of physics challenges: Leaves are sucked onto the tracks by the fast moving trains. The train wheels crush t...

Solar Wind Strips Martian Atmosphere – NASA Goddard

In 2014, NASA's MAVEN (Mars Atmosphere and Volatile Evolution mission) spacecraft measured the speed and direction of ions escaping from Mars. The data collected as it orbited the Red Planet is visualized in this NASA...

Lunar Eclipses Explained + Does The Moon Really Orbit The Earth?

"As bright as the moon looks in the night sky, what we're really seeing is sunlight, and the percent of its face that's illuminated depends on where it is in relation to the Earth. At the point in its orbit when the m...

From Clay to Mosaics – How zellige (الزليج) mosaics are made

From Moroccan interior design company Habibi Interiors, watch as maâlems (master craftsmen) take their time and skill to create terra cotta tiles known as zellige, zillij, or الزليج, meaning "tiles" in Arabic: From Cl...

LeVar Burton Takes a Ride in a Driverless Car – Reading Rainbow

Self driving car videos often focus on the possible fun of rider experiences or the usefulness of computerized driving, but we'd also like to know more about the technology. How do driverless cars avoid crashing into ...

Building the solar system to scale in the Nevada desert

"Every single picture of the solar system that we ever encounter is not to scale. If you put the orbits to scale on a piece of paper, the planets become microscopic and you won't be able to see them. There is literall...

The Slinky machine: A hand-cranked, wooden Slinky escalator

What if you had a never-ending stairway for a Slinky to "walk" down? How long do you think it might continue to descend? Matthias Wandel of Woodgears.ca decided to find out. This is The Slinky Machine, a specially-con...

Embroidered zoetrope animations by Elliot Schultz

As a Digital Art Major at the Australian National University, Elliot Schultz experimented with and produced embroidered zoetrope animations. Get a behind-the-scenes look here. Discs were created with animated seque...

The Distance I Can Be From My Son – Lenka Clayton

How far can a toddler get before you need to run after him? What factors help you decide what's almost too far for safety? For sight? For comfort? In her project Residency in Motherhood, Pittsburgh-based British c...

Sunlight is way older than you think – TED Ed

The random walk problem -- the "mathematical formalization of a path that consists of a succession of random steps" -- can be applied to sunlight... not the sunlight that travels from the sun to Earth, which takes onl...

What’s the Loudest Possible Sound? – It’s Okay to Be Smart

"What is the loudest possible sound? What about the quietest thing we can hear? And what do decibels measure, anyway?" This video from Joe Hanson and It's Okay to Be Smart dives into the wide ranging and incredibly se...

Machining a cube in a cube in a cube from a single metal block

This three-layered cube – a cube in a cube in a cube – was made from a single block of metal. It was machined with precision on a metal lathe and a drill by YouTuber Инженер BrunS, an experienced hobbyist. The cubes c...

How Big Is The Sun? – MinutePhysics

Even though the sun and the moon look around the same size in the sky, the sun is 400 times bigger than our planet's moon and is 400 times farther away. Compare the sun's 150,000,000 km (93,205,679-ish miles) distance...

PoSSUM Program Trains Scientists for Space Research

For those who want to be an astronaut or work in space, and for those climate scientists who want a closer look at the mesosphere -- the understudied layer of Earth's atmosphere that's above the stratosphere and below...

The science of solar eclipses: How do solar & lunar eclipses work?

How do solar & lunar eclipses work? And why don't we get eclipses every month? This Vox explainer is packed full of really interesting information about the remarkable science of solar eclipses. Find out how 5.1 d...

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