Topic: how things work

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The Slinky Drop in slow motion – Veritasium

Slinky Drop in Slow Motion! How does a slinky fall when extended by its own weight and then released? We were surprised by the answer — and especially by what the answer looks like. Veritasium's Derek Muller mee...

The circulatory system: How blood is transported through our bodies

The circulatory system consisting of the heart, arteries, capillaries, and veins, is the pumping mechanism that transports blood throughout the body.  In the heart, the left ventricle contracts, pushing red blood c...

How to build a light bulb – Sick Science!

Yes, you can build your own lightbulb! This is what you’ll need: Eight D-sized batteries, Mason jar or other clear glass, Electrical tape, Pie pan, Scissors, Toilet paper tube, Mechanical pencil refills, Small ...

Energy 101: Wind Turbines

An Energy 101 video from the US Department of Energy: the modern wind turbine and how it generates clean electricity using physics and technology. Watch more videos about wind.

The Bloodmobile – They Might Be Giants

The Bloodmobile by They Might Be Giants’ Here Comes Science, one of our favorite albums of songs and music videos. We also recommend...Here Comes Science CD+DVDThey Might Be Giants View this album on Amazon

Scanimated Optical Illusion

YouTube’s Brusspup specializes in optical illusion videos that are inspired by the animation concepts in the book Magic Moving Images, and in scanimation books like Gallop!. In this video,...

Binary Marble Adding Machine

A Binary Marble Adding Machine by Matthias Wandel of Woodgears.ca. “When the rocker is set to the left, that represents a zero. When it’s rocked to the right, it’s set to on...

Jerry Ford’s automatic wheelchair brake device

Elderly people with Alzheimer’s Disease or dementia sometimes forget to use the manual brakes on their wheelchairs, which then fall out from under them when they try to stand or sit. When this ...

The secret design and movement of slithering snakes

From Science Nation, mathematician and mechanical engineer David Hu studies the design and movement of slithering snakes: Snakes certainly make it look easy when they slither forward, leaving perfect S-curve track...

New York City’s pothole repair team

Every day, on a Tumblr called “The Daily Pothole,” New Yorkers get a peek inside the inner workings of a city system few knew existed: the men who repair our potholes. Tumblr spent a day with...

How the trucks remove heavy snow in Montreal, Canada

Behold how they remove heavy snow from the streets of Montreal, Canada. It’s like a Virginia Lee Burton book that has come to life…  Related videos: more trucks and more snow.

You Are Your Microbes – TED Ed

Every gut microbe has a job to do. Find out who these millions of different microbes are and what their jobs are within the ecosystem that is you, from the wonderful TEDEd: You Are Your Micro...

LEGO Rolling Ball Clock

Jason Allemann, who created these Lego mazes last year, built this beautiful and elegant Lego ball clock. The video shows how the rail system works with one ball being hauled up the chain e...

How do astronauts wash their hands in space?

Life’s daily little details get interesting when you live in microgravity. For example, how do astronauts wash their hands in space? ISS Commander and Canadian astronaut Chris Hadfield de...

Earth Unplugged: Wet animals shake in slow motion

According to the research, “a wet animal could spend 20% or more of it’s daily food energy to evaporate water in its fur, if it cannot shake.” Therefore, it’s super import...

A is for Ampere – Circuit Playground

This made-for-kids video, Circuit Playground “A is for Ampere” – Episode 1, isn’t your everyday made-for-kids video. DIY electronics shop Adafruit, led by MIT engineer and Adafruit Founder Limor Fried (in the ...

Extravagant furniture with secret panels, doors, and drawers

If you’ve ever wanted a cabinet with secret compartments — and we’re talking about a lot of secret compartments here — then you’re going to like videos from the Extravagant Inventi...

Fish and frogs that live out of water

Watch this BBC clip of fish and frogs living out of water, featuring the lung fish, a burrowing desert frog, and the thorny devil lizard.

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