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Topic: physics
How to make a rocket
"What's the best scientific formula for a powerful rocket with oxidizer and fuel?" In this video clip from Bang Goes The Theory Series 5, via BBC Earth Lab, we get a quick peek at the mix of chemistry and physics that...
The Lemonade Machine, an epic Rube Goldberg collaboration
When life gives you lemons, make lemonade. This optimistic phrase, encouragement for turning the sour moments of life into something sweet, sets the theme for an epic Rube Goldberg chain reaction collaboration: The Le...
The Ocean Cleanup technology and challenges explained
The Great Pacific garbage patch in the northern Pacific ocean holds an estimated 1.8 trillion hard-to-see pieces of plastic that float around on or just below the water's surface. They're kept swirling in an area that...
The Meissner Effect: How to levitate a neodymium magnet
A neodymium magnet cube sits on a surface of yttrium barium copper oxide—YBa2Cu3O7, nicknamed YBCO—inside the bottom of a styrofoam cup. A small amount of liquid nitrogen is poured slowly over the YBCO. As it cools, t...
What happens to balloon animals in liquid nitrogen?
How can you fit a bunch of balloon animals into a small container? Add some liquid nitrogen into the mix, as demonstrated in this video by Real Physics Live, the YouTube channel for Texas A&M University's Department o...
A colorful Chladni pattern demonstration
Watch as Chladni patterns form on a metal plate, a teaching demonstration "spiced up" with colored sand by associate professor of physics at UNC Charlotte skullsinthestars. The video is accompanied by Prelude from Sui...
The Uminami Strandbeest
A new design that hearkens to Theo Jansen's original kinetic structures from the early 1990s, the PVC tube-constructed Uminami Strandbeest doesn't get sand into its joints and requires no lubrication to move smoothly....
Dance of the Line Riders by DoodleChaos
Set to Dance of the Sugarplum Fairy from Pyotr Ilyich Tchaikovsky's The Nutcracker, three line riders from the popular online game of the same name sled over line after line, sometimes twisting, tossing, tumbling, and...
Use a 9-volt battery to break water into its elemental components
In the 1987 miniseries The Ring of Truth: An Inquiry into How We Know What We Know, Philip Morrison proves that a water molecule is composed of two hydrogen (H) atoms & one oxygen (O) atom with a simple demonstration....
Creating wood ash cement from scratch, an experiment
How do you make a cement-like building material that won't dissolve in water? From scratch? In this Primitive Technology video, an experimental cement is made from crushed terracotta and refired wood ash that was burn...
The secrets of citrus micro-jets, captured in high speed
Peel an orange or a lime and then bend a section of fruit until the liquids squirt from the skin at 30 feet per second. At what point did the skin give way? Where did the micro-jets shoot? Why did the skin of citrus f...
Green Ball Adventure, a Sprice Machines chain reaction
Follow this green ball on an adventure across a series of contraptions and chain reactions set up on a pegboard wall. This new screen link video from Steve Price of Sprice Machines features dominoes, pulleys, levers, ...
The Science Of Firework Color
Sodium in yellow bursts, strontium in red, calcium gives us orange, barium for green, and copper for blue hues... and there are more where those came from. The science of firework color, as explained above by SkunkBea...
Hedwig’s Theme from Harry Potter played on a glass harp in Italy
Listen to the glass harp stylings of a street performer in Venice, Italy playing Hedwig's Theme, the main theme song from the Harry Potter movie soundtracks. While touring the Italian city on vacation, Hashem Al-Ghail...
Disney Imagineering’s autonomous robot stunt doubles
To level up the animatronic characters in their parks around the globe, Disney Imagineering has created autonomous robot stunt doubles that can perform "extreme aerial maneuvers 60 feet in the air, making real-time de...
How do crab spiders use their silk to fly?
Some spiders can catch onto breezes that send them flying across oceans and high up into the skies by ballooning—releasing "numerous strands of silk that they spin up to six feet long." And those threads of silk, ...
Observing the angle of repose with DIY physics devices
The angle of repose or critical angle of repose is how steep various types of materials can be piled without slumping. The steepness of the side of a pile is determined by the amount of friction between the particles ...
A microburst drops heavy rain over Austria’s Lake Millstatt, a time lapse
See a microburst or downburst drop heavy rain in a thunderstorm over Austria's Lake Millstatt. The time lapse was captured by photographer Peter Maier from high above the scenery, allowing a clear view of the burst. F...
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