sine waves

A short video from the trafficwaves.org site showing how traffic jams and standing waves form, including the fight between cheaters and blockers at an exit-lane backup. It also touches on how individual driving behavior affects the flow.

Not Just Bikes contrasts typical car-dependent North American business parks with one near the airport in the Netherlands that works for driving, cycling and transit. It looks at how the design makes commuting easier.

Kaze Emanuar searches for the best sine approximation for the Nintendo 64, comparing the lookup tables in Mario 64 and Ocarina of Time with polynomial alternatives. It walks through numerics and 3rd, 4th and 5th order approximations.

Jason Cohen's MicroConf talk on designing a bootstrapped business by starting from your own strengths, goals and constraints. He works backward to the business model, pricing, market and product that fit, with practical points like annual prepay and pricing tiers.

Simon Sinek's TEDx talk arguing that great leaders and companies inspire action by communicating why they do something before how or what. He uses Apple as his main example.

Mike Pound explains the discrete cosine transform and how it underpins JPEG compression. It is part two of Computerphile's JPEG series.

An excerpt of Simon Sinek on Inside Quest discussing millennials in the workplace. He covers parenting, technology, social media dopamine and what that means for managers.

Simon Sinek's 99U talk on why leaders earn trust by putting their team's safety ahead of their own, drawing on biology and anthropology. It distills the ideas of his book Leaders Eat Last into about 46 minutes.

Veritasium explains in detail how LIGO detects gravitational waves, with a laser interferometer measuring displacements smaller than a proton. The video focuses on the extreme precision and the techniques needed rather than the general discovery story.

Louis Rossmann interviews Kaylie Milliken and Mellissa Wood, producers of the documentary Billion Dollar Bully, about Yelp's alleged practices toward businesses.

An ABC 20/20 investigation into whether the Better Business Bureau sells its ratings. It looks at BBB finances, executive pay and how grades relate to paid accreditation.

A short Frank Zappa interview clip on the decline of the music business, contrasting old cigar-chomping executives with younger industry people.

The business card scene from the film American Psycho, in which characters compare their business cards.

The business card scene from the film American Psycho, in which executives compare increasingly refined business cards with escalating envy. It is a two-minute clip of a classic dark comedy moment.

The South Park clip in which underpants gnomes explain their three-phase business plan: collect underpants, then a question mark, then profit.

A Business Insider investigation into the US boom in AI data centers, mapping where they are, who owns them, and how much power and water they consume. It looks at the costs borne by communities, with a focus on Virginia.

Jeff Vogel of Spiderweb Software gives a GDC 2018 retrospective on surviving as an indie game maker since 1994, from shareware days through Steam. It covers business realities, costs and sustaining a comfortable living without chasing riches.

Chris Ford builds up from a single sine wave through layered abstractions to a Bach canon, using Clojure and the Overtone audio environment. The talk shows music theory as a natural fit for functional programming.

Clayton Christensen explains his theory of disruptive innovation at Oxford's Said Business School, using examples from steel, Toyota, Sony, Walmart and Godrej. He applies the theory to why some economies stagnate and others grow.

Fox Business interview in which Oracle co-founder Larry Ellison claims Oracle will beat Amazon at cloud databases. He argues the world's valuable data lives in Oracle and says Amazon struggled to move off it.

A Bell Labs film in which Dr. J.N. Shive uses a mechanical wave machine to demonstrate reflection, standing waves, resonance and impedance matching. He includes some equations but relies mostly on real-world examples a layperson can follow.

Simon Sinek's TED talk presents the 'golden circle' model: great leaders and companies inspire action by starting with why they do something, before how or what. He illustrates it with Apple, Martin Luther King, the Wright brothers and, as a counterexample, TiVo.

A Wendover Productions video on how dollar store chains expanded across America and why they displace grocery stores in small towns. It covers their business model and supplier leverage.

ElectroBOOM examines whether 5G and other electromagnetic waves can harm people, explaining the EM spectrum and the difference between ionizing and non-ionizing radiation. It includes experiments and measurements in his usual humorous style.

Amateur footage of a Japanese coast guard boat riding up and over large tsunami waves after the March 2011 Tohoku earthquake. It is short and unedited.

A CBC The National investigation into Apple's business practices, including undercover work on repair pricing and the battery slowdown scandal. It examines allegations of overpriced repairs and misdiagnosis.

Veritasium explains why a halved grape in a microwave makes plasma: the grape traps microwaves, and the fields of two halves interact to concentrate energy where they touch.

Louis Rossmann recounts calling NYC's Department of Consumer Affairs after his repair business was fined, only to find the agency staff could not explain what the law required. The call starts around 3:14.

A rap battle in which John Maynard Keynes and F. A. Hayek debate the causes of boom and bust, stimulus, and bailouts. It was produced by Econstories to teach the two schools of thought.

Tom Scott investigates the claim that the microwave was invented to heat hamsters, and interviews James Lovelock about freezing and microwave-thawing hamsters in the 1950s. It traces early magnetron uses beyond radar.

An animated visualization of basic quantum mechanics using a free particle, with simulations based on the actual equations. It covers waves, particles, and how measurement collapses the wavefunction.

3Blue1Brown visualizes Feynman's lecture on the refractive index, explaining why light appears to slow down in glass and why the effect depends on color. It builds the idea from waves produced by oscillating charges in the material.

A PBS clip in which Richard Feynman explains the strange nature of light and electromagnetic radiation. He conveys how little of it we actually see and how radio waves are present everywhere.

Actress Claudia Christian tells how she overcame alcoholism using the Sinclair Method, which uses naltrexone to gradually reduce cravings. She discusses fresh perspectives on treating alcohol use disorder.

Maciej Ceglowski's talk at Web Directions argues that small teams and lone programmers can build sustainable businesses without chasing Silicon Valley's grow-or-die model. He offers alternative, more achievable definitions of success.

A This Week in Startups episode in which Jason Calacanis interviews David Heinemeier Hansson of 37signals. They discuss bootstrapping, company philosophy and views on the tech industry.

Huygens Optics shows how DIY photon sieves shape a laser's wave front, explaining how they differ from zone plates and how aperture count affects the focal point, with time-resolved visualizations of the diffraction.

Huygens Optics explores the idea that space is a non-linear elastic medium, and uses simulations to show how wave energy might be confined locally into particle-like objects. It touches on inertia, the Schwinger limit and the vacuum as a medium.

A short Stanford video in which Chao-Lin Kuo surprises Professor Andrei Linde with BICEP2 evidence supporting cosmic inflation, the first apparent images of primordial gravitational waves.

A Wendover Productions explainer on how budget airlines can sell tickets for under 10 euros. It covers the costs airlines face and how low-cost carriers structure their business.