Zero Mass Water -BUSTED!
In briefThunderf00t argues that Zero Mass Water's solar-powered atmospheric water generator is essentially a dehumidifier with solar panels. He critiques its economics and physics, especially in arid places.
Physics & Space
Page 25 of 25
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Which Penetrating Oil is Best? Let's find out!
In briefProject Farm tests six penetrating oils, including WD-40, PB Blaster, Liquid Wrench and an ATF and acetone mix, on rusted bolts. Liquid Wrench placed first and the homemade mix second.
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Bullet vs Prince Rupert's Drop at 150,000 fps - Smarter Every Day 165
In briefSmarter Every Day films a bullet hitting a Prince Rupert's drop with a high-speed camera at 150,000 fps. It shows how the glass drop's tough head and fragile tail behave on impact.
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Space Shuttle RTLS Abort Challenge - Without The Manual
In briefScott Manley tries a Space Shuttle Return To Launch Site abort in the Orbiter simulator without manuals or checklists. He explains how the maneuver works and where his attempt went wrong.
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RC KFC bucket aeroplane (magnus effect)
In briefPeter Sripol builds and flies an RC aeroplane whose wings are rotating KFC buckets, using the Magnus effect (Flettner rotors) for lift. It is a hobbyist experiment in unconventional aerodynamics.
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Is America Actually Metric?
In briefVeritasium explains that the US signed the Metre Convention in 1875 and that all US customary units are officially defined in terms of metric standards. It also touches on the standard kilogram.
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Scientists Make Easter Island Statue Walk | National Geographic
In briefA one-minute National Geographic clip of researchers Terry Hunt and Carl Lipo testing a theory that Easter Islanders used ropes to rock the moai statues upright to walk them to their platforms.
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Grasshopper Takes Its First Hop / 9-21-12
In briefSpaceX footage of the Grasshopper vertical takeoff and landing test vehicle making its first roughly 6-foot hop in McGregor, Texas, on September 21, 2012. It was an early step toward a reusable Falcon 9 first stage.
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Spinning Sphere of Molten Sodium
In briefVeritasium shows an experiment from Prof. Dan Lathrop's lab with a spinning sphere of molten sodium, used to study how turbulent convection in Earth's core generates a magnetic field. It is a short demonstration of dynamo physics.
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SpaceX: BUSTED!! (Part 1)
In briefThunderf00t's critique of SpaceX's claims, arguing its launches are not actually cheaper than competitors or the Space Shuttle. It questions the economics of reusability.
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Spinlaunch: BUSTED!
In briefThunderf00t critiques SpinLaunch, the startup that proposes flinging payloads to space with a giant centrifuge. He argues the physics and engineering do not hold up.
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Asteroid Discovery - 1970-2015 - 8K resolution
In briefScott Manley's short animation shows every asteroid discovery from 1970 to 2015 plotted over time in 8K. It makes visible how survey technology made discoveries accelerate and where telescopes looked.
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CRS-6 First Stage Landing
In briefSpaceX's official footage of the CRS-6 Falcon 9 first stage landing attempt, in high resolution and slow motion. It shows the descent and touchdown on the drone ship.
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Horizon: Richard Feynman - No Ordinary Genius (full version)
In briefThe 1993 BBC Horizon documentary on Richard Feynman, using interviews with colleagues and Feynman's own storytelling. It covers his life and work through to his final illness.
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Grasshopper 325m Test | Single Camera (Hexacopter)
In briefSpaceX footage of the Grasshopper reusable rocket prototype flying 325 m before landing on its pad. It was the first test to use the full navigation sensor suite and closed-loop control for a precision landing.
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Why We Should NOT Look For Aliens - The Dark Forest
In briefKurzgesagt animated explainer on the Dark Forest answer to the Fermi Paradox. It argues that if advanced civilizations exist, staying silent may be the safest strategy because revealing yourself invites a first strike.
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Superheating of water (Mythbusters)
In briefA short clip of the Mythbusters demonstrating superheated water in a microwave, which can erupt violently when disturbed.
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chernobyl 2013: radioactive ant bites & 115 mSv/h of pure gamma radiation
In briefA YouTuber explores the Chernobyl zone in 2013, takes a gamma spectrum of a hot reactor fuel fragment, and jokes about a radioactive ant bite. It is a hands-on amateur look at radiation in the exclusion zone.
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Filming the Speed of Light at 10 Trillion FPS
In briefThe Slow Mo Guys visit a lab with a camera capable of filming at 10 trillion frames per second, fast enough to see light travel. They show the setup and the resulting footage.
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Negative Ion/Anti-5g Products Are Actually RADIOACTIVE
In briefThe Thought Emporium tests so-called negative ion and anti-5G wellness products and finds they are radioactive, with some coated in powdered thorium.
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Waterseer -BUSTED!
In briefThunderf00t debunks the Waterseer, a crowdfunded device that claims to condense drinking water from the air using cool ground. He argues the physics does not support its claims.
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DR. QUANTUM - DOUBLE SLIT EXPERIMENT
In briefA short animated lesson, featuring Dr. Quantum, on the double slit experiment and how observing electrons seems to change their behavior.
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Starship High Altitude Test - SN8
In briefSpaceX's livestream of the Starship SN8 high-altitude test on December 9, 2020. It ascended, did the landing flip with flap control and reached the landing point, but touched down hard because of low header tank pressure.
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World's Strongest Magnet!
In briefVeritasium visits the National High Magnetic Field Laboratory to see the world's strongest magnets and demonstrate effects like eddy currents. It covers what intense magnetic fields do to materials and objects.
