Topic: physics

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How to make simple homopolar motor ‘race cars’

Lay out a 'race track' of tinfoil, attach two round neodymium magnets to the ends of an AA battery x2 (or more) -- the polarity of the magnets matters, so experiment to see how your vehicle behaves (or doesn't) -- the...

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...

Why Isn’t It Faster To Fly West? – Minute Physics

When you think about how the Earth rotates -- to the east -- it would seem to make sense that a plane flying west would meet its destination sooner... after all, isn't the planet is spinning toward the plane? In fact,...

How to make a DIY ‘drone’ with balloons & a fishing rod

How do you get a bird's eye view of the surrounding landscape when you don't have an quadcopter or drone? In this episode of Earth Unplugged, Sam Hume cobbles together his own 'drone' for less then £50 (around $76). S...

Emperor Penguins keep warm in an ever-shifting huddle

With brand new baby chicks sheltering in so many of their brood pouches, warmth is imperative for Emperor Penguins in the coldest place on the planet. But how do you stay warm enough to survive in -40 degrees or colde...

The physics of ‘skydiving’ wind tunnel acrobats

In a vertical wind tunnel that's blowing air upward at 270 km/h (168 mph), four 'skydiving' acrobats perform a twisting, turning flying routine without ever colliding into each other. How do they perform epic looking ...

How Far Do Sneezes and Vomit Travel? – Gross Science

Let's enter the world of sneeze experiments and vomiting machines with Anna Rothschild as she explains just how far the tiny liquid particles from sneezes and vomit can travel... and it's farther than you think. 'Vomi...

Nature’s Scuba Divers – How Beetles Breathe Underwater

"Water beetles have been breathing underwater since before the dinosaurs existed,” said Crystal Maier, an entomologist at The Field Museum in Chicago. “It has evolved at least 10 times across the insect tree of life."...

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...

Macro Video of Iridescent Soap Bubbles – Stereokroma

The next time you get the opportunity to blow some soap bubbles, be sure to take a long, close look at them. Those ever-changing rainbows sliding around across the surfaces of the bubbles can be spellbinding... like a...

General relativity & why GPS wouldn’t work if we didn’t know about it

General relativity, what Albert Einstein said was the happiest thought of his life, basically expands upon the idea that "the laws of physics are the same everywhere". Light and gravity behave in the same way for you....

Chemical Bouillon, a series of visually abstract chemical reactions

Hydrocarbon vs Ink - Implosion, above, from the Chemical Bouillon video series, "an artistic project studying the graphic aspect of chemical reactions" created by Antoine Delach, Valere Amirault, and Teurk in Paris, F...

Ferrofluid + Glow Sticks – The Physics Girl

Ferromagnetic + fluid = ferrofluid, a liquid containing nanoscale particles of magnetite, hematite, or an iron compound. Invented by NASA's Steve Papell in 1963, ferrofluid forms undulating spikes and patterns as it r...

Extreme Gs in a centrifuge – Simulating gravity on other planets

What is it like to feel gravity on Neptune or Jupiter, or to experience the G-forces that astronauts endure when they're returning to Earth in the Soyuz? In this clip from episode 3 of Wonders of the Universe, Pro...

Biisuke Ball’s Big Adventure – Pitagora Suitchi

Biisuke is a little red ball who must go on a big adventure to save his brothers Biita and Biigoro after they're imprisoned in the high tower of a Rube Goldberg Machine. "Here we go, Biisuke Ball, sneaking into the en...

The Dresser – Joseph Herscher

An alarm clock goes off. Dropping it in a glass of water will silence the alarm. The weight of the glass also triggers a machine which helps the user get dressed... Shirt, pants, vest, socks, shoes... and don't fo...

Hot & Cold Water Science Experiment – HooplaKidzLab

With two matching jars, red and blue food coloring, some hot and cold water, an index card, and a dish or baking pan, you can observe how the different densities of hot and cold water behave. This experiment by Hoopla...

MorpHex MKIII, the glowing, transforming robot

Glowing with programmed LEDs, rolling around in "spheremode" with twelve synchronized shell sections, and walking as a hexapod robot, this is MorpHex MKIII, the transforming robot, made in 2014 by kinematics expert Kå...