These lil fellas were created by English engineer John Ambrose Fleming in 1904, and used for the first transatlantic radio transmissions. My son characterizes them as “Bacteriophages, but with the personality of the Pixar lamp.” Agreed. 🦠🤖💕
(props to Project Gutenberg for the tip)
![“Three vintage vacuum tubes with various internal structures, mounted on stands with visible wiring and components.” [AI-generated description, which I love!]](https://www.davideriknelson.com/sbsb/wp-content/uploads/2024/01/URS-OURS-OND-1024x630.jpg)