Primitive Technology: Rock-Throwing Catapult (Trebuchet)
AdultsCreativityEducationNatureDIYEngineeringScienceI built a trebuchet, a type of catapult that uses a counter weight to store gravitational potential energy which is then used to fire a projectile via a sling.
Primitive Technology: Trebuchet
AdultsConstructionCreativityEducationDIYTechnologyEngineeringI built a trebuchet, a type of catapult that uses a counter weight to store gravitational potential energy which is then used to fire a projectile via a sling.
Primitive Technology: Improved Multi-Blade Blower
AdultsConstructionCreativityEducationDIYEngineeringIn the 6 years since I developed the first forge blower I had made very few improvements to it's design.
Building the impossible: Golden Gate Bridge - Alex Gendler
AdultsConstructionHistoryHumanEngineeringExplore the construction of California’s Golden Gate Bridge, and dig into the engineering innovations that made the structure possible.
Paving machine
AdultsConstructionProductivityEngineeringTechnologyTiger-Stone is a Dutch made paving machine that uses gravity and an electric motor to print stone and brick roads. It's a six meter wide machine that is capable of laying 300 square meters of road a day.
How Does A Carburetor Work?
AdultsConstructionCreativityPhysicsEngineeringTechnologyAir flows into the top of the carburetor from the car's air intake, passing through a filter that cleans it of debris..
How one design flaw almost toppled a skyscraper - Alex Gendler
AdultsCitiesConstructionHistoryEngineeringArchitectureIndustryDig into the unique engineering of New York City’s Citicorp Center tower, and the design flaw that threatened to topple it.
Building the world's largest (and most controversial) power plant - Alex Gendler
AdultsConstructionDesignIndustryEngineeringEnvironmentEnergyExplore the creation of China’s Three Gorges Dam, and find out how the hydroelectric plant generates its power.
How the world's longest underwater tunnel was built
AdultsConstructionCreativityScienceEngineeringTransportationHistoryDiscover how the English Channel Tunnel was built and the engineering challenges of building a 200 kilometer long tunnel underwater.
Primitive Technology: Brick Firing Kiln
AdultsCreativityMediaNatureDIYEngineeringPrimitive Technology: Brick Firing Kiln – building a brink firing kiln from scratch.
Why Don't We Have Water Powered Cars Yet?
AdultsCreativityIndustryScienceEngineeringPhysicsToday we're dipping our toes into the engineering and physics behind water-powered cars!
Engineering with Origami
AdultsConstructionCreativityScienceEngineeringDesignOrigami is inspiring a plethora of new engineering designs.
Flamethrower vs Aerogel
AdultsConstructionDesignScienceEngineeringWe put aerogel to the test vs 'not-a-flamethrower', a huge 2000°C flame to a large fiberglass blanket infused with silica aerogel - formerly the lightest solid (that title is now held by graphene aerogel).
I Waterproofed Myself With Aerogel!
AdultsHealthHumanScienceEngineeringAerogel has extraordinary properties but it can be tough to work with. This video looks at modifying aerogels to take advantage of their unique characteristics.
Why Machines That Bend Are Better
AdultsConstructionEducationScienceTechnologyEngineeringCompliant mechanisms have lots of advantages over traditional devices. SimpliSafe is awesome security. It's really effective, easy to use, and the price is great.
How does a whip break the sound barrier?
AdultsMediaPhysicsScienceEngineeringApril Jennifer Choi is a Mechanical Engineer and Professional Whip Artist from Peoria, IL. She has a Master's Degree in Computational Fluid Dynamics as well as several Guinness World Records in Whip Cracking.
How to Build a Dyson Sphere
AdultsConstructionDesignHumanScienceSpaceEngineeringIf humans want to expand into space, it will take us incredible amounts of energy. How do we do that?
Floating City Physics
AdultsCreativityDesignScienceEngineeringPhysicsTechnologyHow much would a floating city weigh?
Five Firsts for Mars InSight
AdultsHistoryScienceSpaceEngineeringMars InSight will be the first to detect seismic activity on Mars’ surface, first to measure rate of heat transmitted from interior, first to dig nearly 5m down, first to measure magnetic fields on Mars’ surface, and first to use a robotic arm to place instruments on the surface of Mars (assuming it lands of course…)
What if cracks in concrete could fix themselves?
AdultsConstructionScienceTechnologyEngineeringConcrete is the most widely used construction material in the world. It can be found in swathes of city pavements, bridges that span vast rivers and the tallest skyscrapers on earth.
How Do Helicopters Fly Without Wings?
AdultsScienceTechnologyTransportationEngineeringEngineering tons of metal to fly straight up is no easy feat. Here's how helicopter blades make vertical flight a reality.