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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.

Guitarist Jim Lill methodically tests what in an electric guitar affects its tone, swapping parts on a partscaster and even trying a 2x4 body. He finds that wood and construction matter far less than people assume.

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.

Steve Mould shows Spintronics, a set of mechanical components such as resistors, capacitors and transistors linked by chains, that give an intuitive feel for how electrical circuits work.

Primer simulates green beard altruism, where individuals recognize and help others carrying a shared marker, and shows how imposters affect its evolution. It is an animated evolution simulation based on published papers.

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.

A 15-minute clip of linguist Stephen Krashen discussing language acquisition, drawn from the 1980s. It presents his input hypothesis and the distinction between acquisition and learning.

Blender Guru's Andrew Price proposes a redesign of Blender's user interface, answering the usability problems raised in earlier parts of the series. He later noted the proposal had flaws and posted a follow-up.

A lecture from the 1980s by linguist Stephen Krashen on how people acquire language. He explains his comprehensible input hypothesis for second-language acquisition.

Louis Rossmann opens a new MacBook Air and reacts to its cooling design, where the fan does not appear to be thermally connected to the CPU heatsink. He calls it placebo cooling.

Louis Rossmann criticizes Apple's independent repair provider program as a PR move with invasive contract terms. He argues it does little for independent shops or customers.

Builders Matt Risinger and Jordan Smith visit a Swiss cross-laminated timber factory that makes thick all-wood walls with no traditional insulation and wooden nails instead of glue or chemicals. The video is sponsored by Siga.

Wildlife videographer Dani Connor Wild talks with Oscar-winning sound designer Mark Mangini about how her red squirrel recording became the desert mouse sound in Dune.

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 video telling how Xerox PARC invented the graphical user interface and how Steve Jobs's 1979 visit influenced Apple's Lisa.

Peter Schiff, during his 2010 Senate campaign, argues that government loan programs and subsidies push college tuition up.

World Builder is a short film by Bruce Branit in which a man uses holographic tools to build a world for the woman he loves.

Martin Jonasson and Petri Purho take a bland Breakout clone and add layer after layer of 'juice' such as easing, particles, screen shake and sound until it feels alive. A live demo makes the effect of small feedback details obvious.

America's Test Kitchen tests eight carbon-steel skillets to find the best one, asking whether a single pan can replace stainless, cast iron and nonstick. It names a winner and covers how the pans perform.

Numberphile with Tom Crawford of Oxford explains the Reynolds number, the second of three videos on Navier-Stokes and fluid flow, with demonstrations of laminar versus turbulent behavior.

A reverse engineer walks through fixing a ten-year-old bug in Guitar Hero III without access to its source code, using a disassembler and decompiler. It is technical but explained step by step.

A short documentary about Eric Maundu's Arduino-controlled aquaponics setup in West Oakland, where contaminated soil rules out ordinary farming. Fish and circulating water grow plants without soil.

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.

About Here explains how North American building codes requiring two staircases make small multi-story apartment buildings hard to build, and contrasts this with places that allow single-stair designs.

Tom Scott, with linguists Gretchen McCulloch and Molly Ruhl, examines whether the language you speak changes how you think. The short answer is mostly no, with caveats about the weak version of the Sapir-Whorf hypothesis.

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.

Two Minute Papers covers a paper on speeding up fluid and smoke simulation with convolutional networks. It contrasts the approach with earlier regression forest methods.

Jonna Mendez, former CIA Chief of Disguise, explains how disguises are used in intelligence work and what makes deception effective, including changing one's gait.

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

A condensed film of Dick Proenneke's footage of building a cabin and living alone in the Alaskan wilderness, using hand tools and local materials. It draws on the 8mm films he shot himself.

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.

First of an 18-part lecture series by engineer Dan Gelbart on building prototypes. The series covers practical mechanical design and fabrication of precision machines.

Vox explains the Berlin and Kay research showing that languages around the world tend to invent color words in the same order. It walks through the hierarchy and the debate around it.

A 1984 Computer Chronicles segment in which Susan Kare explains the ergonomics and interface design of the original Macintosh. She introduces the interface step by step for newcomers.

The ADVChina hosts tour a villa neighborhood in southern China that was built only three years earlier and is already empty and deteriorating. They use it to discuss ghost cities, building quality and the real estate bubble.

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.