Topic: gravity

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J is for Joule – Circuit Playground

Learn all about work (as defined by physics) and the Joule, a unit of energy measurement, with Adabot and English physicist James Prescott Joule (1818-1889). A summary from Universe Today: An apple is a favorite e...

How many nails can you balance on the head of one nail?

One large nail is securely nailed into a piece of wood. A handful of identical nails are laying on the table. How many of those loose nails can you balance on the head of that first nail? Try it, then watch knife ...

How to make Leonardo da Vinci’s self-supporting bridge

With a series of wooden poles and beams, "Stick-Boy" shows his Dad how to build Leonardo da Vinci's self-supporting arch bridge, also known as the emergency bridge. No nails, screws, rope, glues, notches, or other fas...

The Glass Ribbon Machine

In 1879, Thomas Edison and his research team developed a durable carbon-filament light bulb. In the 1880s and 90s, when glass had to be blown by hand, the skilled Corning glassblowers that Edison hired could produce t...

Clearing snow from the cables on the Port Mann Bridge

The Port Mann Bridge is one of the largest cable stay suspension bridges in the world. To keep traffic flowing during winter storms, teams of Rope Access Technicians hang high over traffic to operate the bridge's snow...

Scott Weaver’s ‘Rolling through the Bay’ toothpick sculpture

This nine foot tall wooden sculpture of San Francisco was made with glue and 105,387 and a half toothpicks. It was built by Scott Weaver who, stuck at home at the age of 14 with spinal meningitis, started working in e...

(Skate)ology & The Science of Skateboarding: Grinding

Kick flips, nose grinds, backside board slides... (Skate)ology! Examine gravity, friction, momentum, and other physics concepts thanks to skateboarding demos by pro skaters Boo Johnson, Dane Vaughn, Marquise Henry, Ri...

Slingshots of the Oceanic

There are many ways of moving through the Universe – of traveling from one point to another over great, even extraordinary distances. There is also a way of using the world for your own ends: taking advantage of slope...

‘Electric Wind’ Can Strip Earth-like Planets of Oceans, Atmospheres

'Electric wind' on Venus may have stripped the planet's upper atmosphere of oxygen... and it "may have played a significant role in stripping Earth's twin planet of its oceans, according to new research results from t...

How Far Can We Go? Limits of Humanity – Kurzgesagt

Is there a border we will never cross? Are there places we will never be able to reach, no matter how hard we try? It turns out there are. Even with science fiction technology, we are trapped in our pocket of the univ...

Magnets & Marbles, Kaplamino’s Pitagora-style chain reactions

Kapla blocks, marbles, steel ball bearings, a few dominos, sticks, and magnetic neocubes or buckyballs power this incredible series of elegant and surprising Rube Goldberg or Pitagora-style chain reactions. An instant...

Science Extras from Jiwi’s (Rube Goldberg) Machines

A YouTube series that hearkens back to characters and situations from old silent films, Jiwi's Machines mixes a love for Rube Goldberg Machines with an ode to comedy greats like Charlie Chaplin or Buster Keaton. T...

Marble Mountain, a huge themed marble machine in progress

Ben Tardif is building a huge marble machine made from 25 themed and soon-to-be-themed sections -- a roller coaster, ski jump, Times Square, Lombard Street, and a fairy tale castle are just a few examples -- that bolt...

How To Make A Mini da Vinci Catapult

It's true that you can buy da Vinci Catapult kits online, but how cool would it be to build one from scratch? Andy Elliott shares how he made a mini da Vinci Catapult from a wooden folding ruler, screws, and some work...

Newton’s Three Laws of Motion

Follow four astronauts on a six month journey from Earth to Mars, and see how Newton’s Three Laws of Motion -- 'Newton' referring to English physicist and mathematician Sir Isaac Newton -- can help us understand and p...

Astronaut Leland Melvin on Returning Home From Life In Space

What's it like to come back home to our Blue Marble after you've been floating around in orbit? NASA astronaut, engineer, and former football player Leland Melvin explains his return-to-Earth readjustment experience i...

Upside Down & Inside Out – OK Go in zero-g

Filmed in one long take, thanks to 20 flights aboard a Russian S7 Airlines parabolic flight, stunt-video aficionados OK Go present Upside Down & Inside Out, all filmed in zero gravity with, as they note, no wires or g...

A robot vehicle that drives on walls using propellers

Drive on the ground, drive on the wall, maybe, just maybe, drive on the ceiling. The result of a collaboration between Disney Research Zurich and ETH Zurich, VertiGo is a four wheel vehicle that appears to defy gravi...

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