power split

Olympic track cyclist Robert Forstemann tries to pedal hard enough to power a 700 W toaster and toast a slice of bread. The film frames it as a comparison of how much energy people consume versus how much they can generate.

A short clip of the Snowbird, a human-powered ornithopter built by University of Toronto students. On August 2, 2010 it sustained altitude and airspeed for 19.3 seconds, the first such flight.

Disney Research's demo of quasistatic cavity resonance, which uses a purpose-built room or cabinet to generate magnetic fields that deliver kilowatts of power wirelessly to mobile receivers inside.

A short recording of a 1565 organ in Mantua tuned in quarter-comma meantone, showing split sharps in use. The extra keys provide separate D-sharp and A-flat for more tonalities.

Footage of Richard Box's art installation in which fluorescent tubes light up in the ground under high voltage power lines, showing the electric fields they produce.

A short IEEE Spectrum clip of Stanford's autonomous car Junior learning to powerslide into a parking spot. It shows several approaches to the maneuver.

Cleared Defense Department footage of Raytheon's Phaser high-power microwave weapon bringing down drones during a 2013 live-fire demonstration at Fort Sill. Raytheon says it has halved the payload size and is offering the system for operational use.

Electronics hobbyist bigclivedotcom tears down a cheap USB power supply with a manufacturing fault that carries full mains voltage to the USB ports, showing the risk of electric shock.

A one-minute clip where an AM radio station can be heard through the arcing of a high-power transmitter tower.

Tech Ingredients builds a larger solar-powered desiccant air conditioner that uses a calcium chloride liquid desiccant with evaporative cooling to cool their lab. The video includes the engineering calculations.

Styropyro tests an eBay laser tattoo removal device and finds it is a roughly million-watt pulsed laser, powerful enough to ignite air in the beam. He had bought it hoping to salvage an Nd:YAG laser cavity.

Quint BUILDs tests a rooftop water storage setup in which solar power pumps water up to the roof and a turbine generates power later. He works through the numbers to show how much energy it actually stores.

A short demo of Automaton 2000 Micro, a StarCraft bot built in Blizzard's World Editor that splits marines perfectly against banelings. It shows inhuman unit micromanagement with zero losses.

Microsoft's March 2023 launch highlights for Microsoft 365 Copilot, showing AI features in Outlook, PowerPoint, Excel and OneNote. The demo includes using it to draft a graduation party speech.

A WiebeTech marketing demo of HotPlug, a device that moves a running computer onto battery or another power source so it can be transported without shutting down.

A short demo of a GPT-powered Linux shell that guesses the bash command you meant and sometimes hallucinates absurd results. The creator stresses that it is real and should not be trusted.

Microsoft's short announcement video for the new Windows Terminal, a modern terminal app for Command Prompt, PowerShell and WSL. It is a stylized trailer for the unreleased project.

Bobby McFerrin uses audience participation at a World Science Festival event to demonstrate how instinctively people follow the pentatonic scale.

Theo Jansen shows many of his Strandbeests, wind-powered walking kinetic sculptures, set to Khachaturian's Spartacus. It presents his work since 1990 on creating new forms of life on beaches.

Chris Boden shows how an operator starts a large hydroelectric turbine generator and manually synchronizes it to the grid using a needle phase meter.

Footage of the 2007 Aurora test, in which a cyberattack was used to destroy a large generator at a test facility in Idaho.

A two-minute 2011 clip of an early uBeam wireless power demo. It shows a short-range ultrasound charging demonstration.

LightningOnDemand revives a pulsed Lorentz plasma cannon, using modern capacitors to extend its range and increase the delivered energy. It is a high-voltage, high-current hobby demonstration.

Dave Jones of EEVblog tears down a fake Apple A1265 USB charger and shows the shortcuts that make it unsafe, such as poor isolation.

Helmet-camera footage of linemen installing a spacer on an energized 765,000 volt transmission line, working from a helicopter. The crew bonds on and off the live wire as part of the job.

A short project video in which Greg Raiz turns a 32-inch eInk display into a wireless digital newspaper showing daily front pages. It runs for months on battery, and the code is published on GitHub.

A DIY demonstration of a fan-and-screen mosquito trap that uses carbonated water as a CO2 attractant. The creator reports catching about 8,000 mosquitoes in two nights.

DIY Perks builds a realistic artificial sun for dark winters, using a powerful water-cooled LED, a satellite dish reflector for near-parallel rays, and a scattering layer to mimic the blue sky. The video explains the optics behind why most lamps do not look like sunlight and shows the build and its results.

Primitive Technology shows building a cord drill from scratch and then upgrading it to a pump drill, using only primitive materials like a stone flywheel and cord.

A ShortCircuit (Linus Tech Tips) review of Nvidia's RTX Voice, which uses GPU-based neural networks to remove background noise from microphone audio. It demonstrates how well the filtering works.

A short Princeton CITP video describing cold boot attacks, where encryption keys remain in DRAM after power loss and can be recovered. It covers the attack against disk encryption such as BitLocker, FileVault and TrueCrypt.

A hobbyist build-and-experiment video on rotating detonation engines (RDEs), where a continuous detonation wave spins around an annular chamber. The creator 3D prints parts and tests a small engine, while being candid about uncertainty over whether a true rotating wave was achieved.

A GoPro-recorded flight of an RC glider setting a 548 mph dynamic soaring speed record at Parker Mountain, California, using only wind gradients.

Archival 1978 Sandia footage testing shipping containers for spent nuclear fuel, including trucks ramming walls, a locomotive hitting a truck-borne cask and a rocket-propelled train crash, plus a fire test.

Promotional video from Zapata Racing showing Franky Zapata flying the Flyboard Air prototype, claiming autonomous flight to 10,000 feet, 150 km/h top speed and 10 minutes of endurance.

A one-minute clip of Spencer Lisenby setting a 545 mph speed record in an RC glider, the Transonic DP, using dynamic soaring. No motor is involved.

A short status-update demo from Figure showing its humanoid robot using OpenAI-powered speech-to-speech reasoning to converse and perform tasks.

A short Boston Dynamics clip of the DARPA-funded Cheetah quadruped robot hitting 28.3 mph on a treadmill, slightly faster than Usain Bolt's fastest 20 meter split.

A demo of a Skyrim mod that uses Inworld AI to let players hold free-form conversations with NPCs. It previews LLM-driven characters in role-playing games.

A short University of Washington demo of ambient backscatter, where battery-free devices communicate by reflecting existing wireless signals. It shows devices powered and linked by ambient RF.