react

Periodic Videos visits a fluorine expert to show how reactive the element is in action. It also includes a discussion of fluoride and tooth enamel.

Brian Peiris demonstrates RiftSketch, a web app where you write JavaScript with Three.js while wearing an Oculus Rift and watch the world around you change live. It runs on Firefox builds with WebVR.

Bruce Hauman live-codes Flappy Bird in ClojureScript in about six minutes, using figwheel to hot-reload changes into the running game. The demo shows game behavior being changed interactively without restarting.

Huygens Optics experiments with etching tiny patterns in glass, covering hydrofluoric acid risks, buffered oxide etch, photoresist and chromium masks, and laser-induced etching. It ends with attempts at microscopic Tesla valves.

A hands-on comparison of how jet fuel, diesel, heating oil, kerosene, avgas and gasoline burn and what color they are. It shows that gasoline ignites more easily than jet fuel.

A five-minute video showing how to build a counter in the Imba web programming language in under a minute, then style it.

David Heinemeier Hansson builds a blog engine with Ruby on Rails in 15 minutes, the demo that launched Rails' momentum.

The Michigan TypeScript group shows the Doom engine running entirely inside the TypeScript type system. It is open source, and two follow-up videos cover why and how they did it.

The Explosions&Fire channel taste-tests the chloride salts of the alkali metals (lithium through cesium), plus some alkaline earth metals and ammonium. The presenter describes the flavors, and the results are more pleasant than expected.

The original 2012 screencast introducing Meteor, a JavaScript framework for building web apps quickly. It demonstrates realtime updates, latency compensation and low boilerplate.

LockPickingLawyer shows what happens when liquid gallium is applied to an aluminum Abus padlock, which weakens and breaks the metal. It is a short demonstration of gallium's effect on aluminum.

Cody's Lab obtains pure heavy water (D2O) and drinks it as a taste test, reporting its flavor and feel. It is a short self-experiment.

Declassified footage of 1950s tests of Project Orion, the nuclear pulse propulsion concept, including the Hot Rod prototypes flown on conventional high explosives. It shows the pusher-plate idea working in small scale.

A demo excerpt from a 2016 Bay Area Rust meetup showing Servo's WebRender drawing CSS on the GPU at very high frame rates. It presents the promise of GPU-based browser rendering.

Cody's Lab collects a sample of dust from the side of a highway and refines it to recover platinum-group metals deposited by catalytic converters. The video walks through the chemistry of separating and assaying the precious metals.

Project 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.

Mark Rober builds a glitter-bomb booby-trapped package to take revenge on porch pirates, filming the thieves' reactions. Some reactions were later acknowledged as partially staged.

A hidden-camera social experiment in a park where three people try to steal a bike in the open: a white teenager, a black teenager and a young woman. It records how bystanders react to each.

Adobe's VoCo demo from the MAX 2016 Sneak Peeks, co-hosted by Jordan Peele, showing software that changes words in a voiceover by typing new ones.

A Tiny Desk concert in which pianist Dan Tepfer plays with a Disklavier player piano driven by a program he wrote that responds to his playing. He performs four pieces from his Natural Machines project.

Veritasium 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.

A six-minute clip of Adobe's MAX 2011 sneak peek showing a Photoshop prototype that removes motion blur from photos. The audience reacts with astonishment as blurry images become legible.