fm radio

Remastered episode of Tim Hunkin's The Secret Life of Machines about the radio, covering its development including Hertz and Marconi experiments and Armstrong's FM radio in animated form.

Technology Connections explains why the superheterodyne radio has its name and how mixing frequencies lets it tune stations well. It walks through the underlying wave phenomena and algebra and why the design solved a hard tuning problem.

Kai Lentit's comedy sketch parodying an interview with an FFmpeg enthusiast. It pokes fun at the open source command-line tool experience and video conversion woes.

The Thought Emporium tests so-called negative ion and anti-5G wellness products and finds they are radioactive, with some coated in powdered thorium.

Two experimenters hold blades of grass near a radio transmitter antenna and hear the AM station through the arc between antenna and grass. It is a short, informal demonstration of unintentional AM demodulation.

A one-minute clip where an AM radio station can be heard through the arcing of a high-power transmitter tower.

Five hours of the late-night BBC Radio 4 Shipping Forecast, uploaded to mark its 150th anniversary. It can be used as sleep audio or to learn the sea areas named in the broadcast.

A one-minute clip from a 2016 Toronto conference in which Geoff Hinton comments on deep learning and radiology. He suggests radiologists should stop being trained because machines would soon read scans better.

A fireside chat at TNW Conference where Reddit CEO Steve Huffman discusses Reddit's growth, user engagement and monetisation plans.

The BBC radio play adaptation of William Gibson's cyberpunk novel Neuromancer, running about two hours. It features professional voice acting, sound effects and music.

Cognitive scientist Donald Hoffman argues in this TED talk that evolution shaped perception to track fitness rather than truth. He uses evolutionary simulations and the Australian jewel beetle as examples.

A five-minute CBC Radio WireTap farewell video in which people of all ages offer words of wisdom to younger people. The advice is short and funny, and keeps coming back to the point that nobody really knows what they are doing.

John Chowning's 1977 computer music piece Stria, composed with FM synthesis, which he discovered in 1967. It unifies timbre and scale structure around the Golden Mean.

A run through the 32 factory presets of the Yamaha DX7 FM synthesizer, with timestamps for each patch such as brass, strings, pianos, bass and tubular bells. It is a straight audio demo of the sounds.

Veritasium visits Chernobyl, Fukushima and other places to find who on Earth is exposed to the most ionizing radiation. The answer turns out to be surprising and puts radiation risk in context.

CNLohr explains how he made an ESP32 produce valid LoRa packets without a LoRa radio, using aliasing and clever signal tricks. It walks through the RF math and shows how far the signals reach.

A YouTuber explores the Chernobyl zone in 2013, takes a gamma spectrum of a hot reactor fuel fragment, and jokes about a radioactive ant bite. It is a hands-on amateur look at radiation in the exclusion zone.

A short demonstration of radioteletype (RTTY), a digital communication mode used in amateur radio, showing what the signal sounds like.

James Hoffmann demonstrates his AeroPress technique with a short recipe: 11g of coffee, 200g of just-boiled water, a 2-minute immersion, then a press. He explains why he skips rinsing, preheating and inverting.

James Hoffmann demonstrates his technique for a clean, sludge-free cup from a French press: stir, break the crust, wait, and carefully pour. It is a four-minute guide.

James Hoffmann explains how decaf coffee is made, how the decaffeination processes differ, and why decaf is roasted and stales differently. He also discusses decaf quality and health questions.

James Hoffmann demonstrates his recommended technique for brewing coffee with a Hario V60 or other cone-shaped dripper, with notes on water and filter papers.

Josh Kaufman's TEDx talk argues that you can reach practical competence in almost any skill with about 20 hours of focused practice, rather than the 10,000 hours often quoted. He describes how becoming a parent led him to rethink how adults learn, and lays out a short method for rapid skill acquisition.

A tour of the historic WLW transmitter facility in Mason, Ohio, recorded at Hamvention 2013. It shows the surviving equipment from the 500,000 watt AM era, when WLW was the only US station at that power, and explains the history.

An episode of the Well There's Your Problem podcast on the 1987 Goiania radiological accident in Brazil, based largely on the IAEA report. It goes through the event day by day.

A 1979 CBC radio interview in which Ted Nelson tries to explain how computers could serve as tools for thinking and visualizing. The interviewer keeps failing to grasp the idea, and Nelson patiently answers again and again.

The Thought Emporium follows up on his earlier video showing negative ion products are radioactive, reporting that Amazon pulled listings and companies shut down. He tests more radioactive quack products with a Geiger counter and cloud chamber.

President Reagan's 1987 radio address on free and fair trade, in which he argues for free trade over protectionism.

A 1971 DEC LAB-8/e (PDP-8/e) minicomputer plays music by inducing noise into a nearby AM radio. The software is Richard Wilson's 1975 Music Compiler running under OS/8.

Christian Schafmeister presents lessons from six years of implementing Clasp, a Common Lisp compiler using LLVM as its backend that interoperates with C++. He explains handling a dynamic, memory-managed language on LLVM.

A one-minute demo at the Computer History Museum's IBM 1401 restoration lab, where a program makes the machine's radio-frequency interference play tunes on an AM radio.

A satirical CBC Radio This Is That sketch profiling a Vancouver artisanal firewood company that sells bundles of kindling for $1000.

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.

Veritasium tells how Kodak film was fogged by radioactive fallout from the first atomic tests, letting the company detect nuclear testing before anyone announced it. The video also covers the deal to keep it quiet and how fallout contaminated packaging.

The Thought Emporium shows how to receive clear images directly from GOES-15, 16 and 17 and Himawari 8 geostationary weather satellites with software-defined radio. It covers the extra effort needed to receive GOES data.

A short clip from Udacity's Web Development course in which Reddit co-founder Steve Huffman describes how Reddit grew early on. He explains seeding the site with content from fake accounts.

NileRed makes radioactive uranium glass from scratch, showing the chemistry involved and the green fluorescence under a blacklight. The video includes warnings about handling radioactive material.

James Houston's entry to Radiohead's Nude remix contest, performing the 6/8, 63bpm song on obsolete hardware such as hard drives, a dot matrix printer, a scanner and a ZX Spectrum.

Jack Gallant's lab demonstrates reconstructing movie trailer clips a subject watched from fMRI brain activity, using regression models trained on hours of viewing data. The video shows the original clip beside the reconstruction.

A how-to video on datamoshing, the glitch-art technique of removing keyframes so that motion data smears across video. It walks through the tools needed, such as ffmpegx and Avidemux, though the author notes parts are outdated.