ui

Tolgahan Cogulu demonstrates a fixed-fret microtonal guitar, playing music that uses notes between the usual twelve semitones. The channel is dedicated to his microtonal guitar designs.

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.

Mark Rober builds a hot tub filled with sand fluidized by air blown from below, so that the sand behaves like a liquid. He explains how fluidized beds work and shows people swimming in them.

A three-minute demo of a series circuit with three LEDs that behaves in a surprising way, posed as a question of how it works.

Classical guitarist Brandon Acker shows how guitars with tied-on gut frets, as used 300 years ago, can play more in tune than modern fixed metal frets. He demonstrates microtonal and meantone tunings on a guitar with movable frets.

Guitarist Jim Lill spends a year testing where guitar amplifier tone comes from, swapping tubes, rectifiers and bias types. He finds that much of it can be reproduced with EQ and distortion in different orders.

AvE tears down the Juicero cold-press juicer, examining its heavily machined parts, electronics and the pricey juice packs. He pokes fun at the product and venture-funded culture along the way.

Matthaeus Krenn presents a concept for car touchscreen UI where the screen controls only one thing at a time, designed to suit driving. A tablet prototype accompanies the short demo.

Adam Savage and engineer Kipp Bradford build a compact wearable refrigeration system to keep Adam cool under costumes, modeled on the cooling unit in a NASA spacesuit simulator. It is a long, hands-on build session.

Sean Hodgins shows the build of the Arduino-based glitter bomb package-theft trap he made with Mark Rober, covering the electronics and the problems that came up. The code and schematics are on GitHub.

A short demo showing slow 2D drawing in the Windows 7 GUI compared with XP. It attributes the slowdown to the display driver model lacking hardware accelerated GDI.

The author of lazygit demos 15 features of his terminal UI for git, such as staging individual lines and easier rebasing, aimed at making common git tasks simpler.

Saqib Shaikh, a blind developer at Microsoft, shows at Build 2017 how he writes and debugs code in Visual Studio using a screen reader. This version adds subtitles.

Gravity Industries tests its jet suit for paramedic mountain rescue with the Great North Air Ambulance in the Lake District, reaching a casualty in 90 seconds versus a 25-minute climb.

Dashcam footage of a Tesla Model S on adaptive cruise control hitting a stopped van, with the driver listing the safety systems that failed to react. The uploader still calls the Model S the best car in the world.

Stuntman Gary Connery jumps from a helicopter at 2,400 feet in a wingsuit and lands without a parachute on a runway of stacked cardboard boxes, the first such landing.

Linus Tech Tips replicates the Threadripper workstation Linus Torvalds built for himself, discussing the parts such as the CPU and cooler.

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.

A demonstration of the 1982 Xerox Star user interface, including its desktop, icons, documents, networking and printing. The uploader argues that Apple's later Lisa and Mac interfaces evolved from these ideas rather than copying them.

Time-lapse of Broad Group erecting a 30-story prefabricated hotel (J57) in Changsha, China in about 15 days. The description touts modular construction's precision, speed and low waste.

Second half of a demonstration of the 1982 Xerox Star user interface. It shows how the Star differed from the later Lisa and Mac interfaces, with strengths in networking and printing and little direct manipulation.

A short video of the first TRON Smart House, built in 1989 as a demonstration of ubiquitous and ambient computing in the home. It comes from the uID Center, which promoted the TRON architecture.

A Polish linguist tests whether speakers of Bulgarian, Polish and Croatian can understand Interslavic, a constructed language built from Slavic languages. It shows how well they follow it without prior study.

Louis Rossmann reviews the Lenovo ThinkPad P50, covering build, thermals and throttling, then spills liquid on it to test the keyboard drainage and spill protection.

A four-minute tour of the TeXmacs scientific editor, showing math typing, figures, citations, a drawing tool, document styles, HTML export, presentations and animations.

Steve Jobs demos NeXTSTEP Release 3, showing the object-oriented development environment and UI that later became the basis of Mac OS X. Midway through he builds a database-backed GUI app with Interface Builder and Enterprise Objects Framework with almost no code.

Disney Research presents Touche, a swept frequency capacitive sensing technique that recognizes complex hand and body configurations, and adds touch sensitivity to humans, liquids and everyday objects.

mitxela shows his KiCad plugin that rounds PCB tracks to give circuit boards organic, melted-looking layouts instead of rigid geometric ones.

NightHawkInLight demonstrates how a Tesla valve works by sending a propane flame front through one, making the flow visible. It is a short, hands-on experiment video.

A short tour of the Megaprocessor, a microprocessor built at enormous scale from tens of thousands of discrete transistors. The builder shows what the machine is made of and where it now lives, at the Centre for Computing History in Cambridge, where visitors can play Tetris on it.

Marco Reps builds and tests an open-source 8.5 digit voltmeter based on CERN's high-precision ADC design. The video walks through assembly, soldering and measurement of the resulting instrument.

A hobbyist builds a prototype full-frame CCD camera from scratch, with open-source design files and a custom PCB. The video shows the first, still rough prototype.

BigClive tears down a heated electric shower head of the type common in some countries, often called a suicide shower. He examines the construction and the dangerous fault conditions, such as poor insulation and missing earthing.

Peter Sripol shows his homemade Part 103 electric airplane flying, built from hobby brushless motors and batteries. The video covers the first flight out of ground effect.

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.

The Geopolymer Institute presents Joseph Davidovits's theory that the Egyptian pyramids were built from cast artificial limestone, a geopolymer concrete, rather than carved blocks. It demonstrates how few people could make blocks.

A short clip of Bill Gates demonstrating Visual Basic in 1991, showing drag-and-drop building of a Windows GUI.

A Computer History Museum recording of the final demonstration of the Xerox Star, the early graphical user interface workstation. It is a long demo session that shows the design thinking behind desktop, icons and windows.

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.

AlphaPhoenix shows off a new camera that films at two billion frames per second and uses it to film a laser pointer pulse. He investigates a strange quirk in how the speed of light appears on camera.