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Topic: force
Raindrops: What do they really look like?
When you draw raindrops, how do you draw them? Are they tear-shaped with the point at their tops? Is that really what raindrops look like? Dr. Joe Hanson asked that very question. He then tested what happened to water...
The surprising interactions between copper and neodymium magnets
Experiments with super strong neodymium magnets and copper! These surprising demonstrations of magnetic damping go beyond the magnet through a copper tube demo that we've previously seen. Watch as Night Hawk in Light ...
Liquid Sand Hot Tub: Making a giant fluidized bed of sand
When air is pumped through sand in just the right way, the sand begins to behave a lot like a fluid. As air escapes between the sand particles, items placed in the sand will begin to float. Others will sink. And when ...
An unexpected way to inflate a balloon – Numberphile
The kamifusen is a traditional Japanese paper (kami) balloon (fusen) toy that became popular in the 1890s and can still be found in a variety of designs or decorated as spherical koi, pufferfish, penguins, monkeys, ra...
A microgravity demo in the Willis Tower Skydeck elevator
The next time you ride an elevator down 103 floors, take a scale with you, because you might want to try this microgravity experiment: In collaboration with Willis Tower, Kevin from the Museum of Science and Industry,...
Hydrodynamic Levitation
Light balls, disks, and cylinders will levitate on a stream of water in a surprisingly off-center way. In this episode of Veritasium, Derek Muller teams up with Blake from InnoVinci, with some help from aerospace engi...
What can you do with a large neodymium magnet?
Neodymium magnets are really strong. The larger they get, the more careful you need to be to avoid being pinched or struck from the force of their attraction. This video from Magnetic Games cautiously explores what ca...
(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...
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...
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...
Circular motion demonstration with a sparkler & a hula hoop
From physics teacher and film maker Alom Shaha, check out these simple demonstrations showing how something moving in a circle will move in a straight line when you remove the centripetal force acting upon that thing....
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....
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...
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...
Why Do Rivers Curve? – MinuteEarth
"...All it takes to turn a straight stretch of river into a bendy one, is a little disturbance and a lot of time, and in nature there's plenty of both." In this Minute Earth episode, narrated by science writer Emily E...
Uncovering the Secrets of Mole Motion – ScienceTake
An animal that can push with 40x their bodyweight, the hairy-tailed mole for example, is definitely something to better understand, and scientists at the University of Massachusetts and Brown...
Dropping a neodymium magnet through a thick copper pipe
There are quite a few neodymium magnets falling through copper pipes on the internet, but we can still understand why this demonstration video is making the rounds: it’s just so cool lo...