intermediate axis

A short promotional video of a 5-axis CNC machine milling an elaborate helmet, made by DAISHIN SEIKI with a DMG machine and hyperMILL CAM software. It shows what 5-axis machining can produce.

Veritasium explains the Dzhanibekov effect, also called the tennis racket theorem, where a spinning object flips unexpectedly about its intermediate axis. The video gives an intuitive account of the underlying rotational dynamics, drawing on Terry Tao's explanation and the original papers.

A comedy-music medley from the Australian band The Axis of Awesome showing that dozens of famous pop songs use the same four-chord progression. The performers cycle through a long list of hits over the same chords.

Australian comedy group Axis of Awesome perform a sketch showing that dozens of pop hits share the same four chords. It was recorded at the 2009 Melbourne International Comedy Festival.

Numberphile's Ben Sparks shows why the golden ratio is the most irrational number, using seeds, continued fractions and rational approximations. He also explains why plants use it for spacing leaves and seeds.

A Huberman Lab podcast episode on the gut-brain axis and how the gut microbiome affects the nervous system, hunger and overall health. It covers the pathways by which the gut influences the brain and practical steps for gut health.

Daniele Procida's PyCon AU 2017 talk presents a system that divides documentation into four kinds, usually drawn as four quadrants. He explains why mixing them makes docs poor and how separating them improves writing.

Andy Keep's Clojure/Conj talk on writing a nanopass compiler, built from many single-task passes with formally defined intermediate languages. It covers the framework's origins in a compiler teaching course at Indiana University.

James Powell's nearly two-hour PyData talk builds up Python's data model, decorators, generators and context managers, coding live in Vim. It aims to take intermediate programmers toward real Python expertise.

Rich Hickey introduces transducers in Clojure, a way to make map, filter and similar algorithms composable independent of the data source. This avoids duplicated implementations and intermediate collections across sequences, channels and streams.

A Capella Science parody of Despacito that sings through evolutionary developmental biology, explaining how a single cell becomes a body, including body-axis genes and dormant snake leg DNA. It runs about four minutes.

A video presenting an Intel research paper on enhancing the photorealism of synthetic images. A convolutional network uses rendering intermediates, shown on GTA V footage that comes out looking like real street scenes.

A short local news report about a Waymo self-driving car that crashed into a pole in downtown Phoenix.

AutoX shows its fully driverless robotaxi navigating dense, chaotic urban village streets in Chinese cities. The vehicle nudges through crowds, bikes, scooters and pets.

A one-minute montage of Elon Musk promising Tesla robotaxis would arrive "next year" over eight years. It was published by Dan O'Dowd's media channel, which campaigns against Tesla's self-driving software.