41554 blogs · [ { "id": "01a0875e-3cf4-71d4-9a00-0b2004b9d828", "title": "Can Guitar Frets Perform Multiplication?", "url": "https://www.charlespetzold.com/blog/2026/09/Can-Guitar-Frets-Perform-Multiplication.html", "published_at": "2026-09-03T12:00:00+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b20053c54ef", "title": "AI-Supercharged Phishing Emails", "url": "https://www.charlespetzold.com/blog/2026/08/AI-Supercharged-Phishing-Emails.html", "published_at": "2026-08-22T14:34:35+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200547509f", "title": "Protests Then and Now", "url": "https://www.charlespetzold.com/blog/2026/03/Protests-Then-and-Now.html", "published_at": "2026-03-24T15:27:35+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b2006176709", "title": "The Appalling Stupidity of Spotify’s AI DJ", "url": "https://www.charlespetzold.com/blog/2026/02/The-Appalling-Stupidity-of-Spotifys-AI-DJ.html", "published_at": "2026-02-26T17:00:00+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200702cd67", "title": "30 Years", "url": "https://www.charlespetzold.com/blog/2026/01/30-Years.html", "published_at": "2026-01-13T17:00:00+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b2007296f38", "title": "Twenty Years of Blog Posts", "url": "https://www.charlespetzold.com/blog/2025/08/Twenty-Years-of-Blog-Posts.html", "published_at": "2025-08-23T13:16:02+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b2008146ba5", "title": "The Mary Queen of Scots Channel Anamorphosis: A 3D Simulation", "url": "https://www.charlespetzold.com/blog/2025/05/Mary-Queen-of-Scots-Channel-Anamorphosis-A-3D-Simulation.html", "published_at": "2025-05-17T15:00:00+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b2008b8e055", "title": "Does the Moon Make Flower-Like Loops Around the Sun?", "url": "https://www.charlespetzold.com/blog/2025/02/Does-the-Moon-Make-Flower-Like-Loops-Around-the-Sun.html", "published_at": "2025-02-25T11:19:50+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b2009aee99c", "title": "Password Math", "url": "https://www.charlespetzold.com/blog/2025/02/Password-Math.html", "published_at": "2025-02-08T15:50:01+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200a1ed738", "title": "Reading Jack Smith’s “Final Report”", "url": "https://www.charlespetzold.com/blog/2025/01/Reading-Jack-Smiths-Final-Report.html", "published_at": "2025-01-20T17:00:00+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200b0833c9", "title": "A Conversation on the DEX Show", "url": "https://www.charlespetzold.com/blog/2025/01/A-Conversation-on-the-DEX-Show.html", "published_at": "2025-01-19T19:11:49+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200c023700", "title": "Very Wrong Math", "url": "https://www.charlespetzold.com/blog/2025/01/Very-Wrong-Math.html", "published_at": "2025-01-10T18:36:04+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200c6617b6", "title": "2025 Project: “The Lost Art of Logarithms”", "url": "https://www.charlespetzold.com/blog/2025/01/2025-Project-The-Lost-Art-of-Logarithms.html", "published_at": "2025-01-01T12:00:00+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200cc5de8c", "title": "The Best Decade in Music", "url": "https://www.charlespetzold.com/blog/2024/12/The-Best-Decade-in-Music.html", "published_at": "2024-12-14T18:00:00+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200d876d55", "title": "Stop Fascism: Vote Blue", "url": "https://www.charlespetzold.com/blog/2024/10/Stop-Fascism-Vote-Blue.html", "published_at": "2024-10-20T16:00:00+00:00" }, { "id": "01a0875e-3cf4-71d4-9a00-0b200d928bf1", "title": "Rudimentary 3D on the 2D HTML Canvas", "url": "https://www.charlespetzold.com/blog/2024/09/Rudimentary-3D-on-the-2D-HTML-Canvas.html", "published_at": "2024-09-29T15:00:00+00:00" } ] posts Claim your blog

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Charles Petzold

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2026

Can Guitar Frets Perform Multiplication?original ↗

3 Sept 2026

AI-Supercharged Phishing Emails original ↗

22 Aug 2026

Protests Then and Now original ↗

24 Mar 2026

The Appalling Stupidity of Spotify’s AI DJ original ↗

26 Feb 2026

30 Years original ↗

13 Jan 2026

2025

Twenty Years of Blog Posts original ↗

23 Aug 2025

The Mary Queen of Scots Channel Anamorphosis: A 3D Simulation original ↗

17 May 2025

Does the Moon Make Flower-Like Loops Around the Sun?original ↗

25 Feb 2025

Password Math original ↗

8 Feb 2025

Reading Jack Smith’s “Final Report”original ↗

20 Jan 2025

A Conversation on the DEX Show original ↗

19 Jan 2025

Very Wrong Math original ↗

10 Jan 2025

2025 Project: “The Lost Art of Logarithms”original ↗

1 Jan 2025

2024

The Best Decade in Music original ↗

14 Dec 2024

Stop Fascism: Vote Blue original ↗

20 Oct 2024

Rudimentary 3D on the 2D HTML Canvas original ↗

29 Sept 2024