Nyctography: A substituton cypher by Lewis Carroll
Lewis Carroll, tired of losing late-night thoughts, invented Nyctography in 1891: a unique substitution cipher and accompanying device for writing in total darkness. This ingenious system, detailed on Wikipedia, highlights Carroll's often-overlooked practical inventiveness beyond his literary fame. HN readers appreciate the deep dive into historical problem-solving and the fascinating technical specifics of such a creative, analog hack.
The Lowdown
Delve into the fascinating, lesser-known invention of Lewis Carroll (Charles Lutwidge Dodgson): Nyctography. Developed in 1891, this innovative writing system and its accompanying device allowed the prolific author to capture his thoughts in complete darkness, addressing a common problem for those prone to nocturnal inspiration.
- The Problem: Carroll frequently awoke in the middle of the night with ideas but found the process of lighting a lamp cumbersome and disruptive, often leading to lost thoughts.
- The Solution: Nyctograph: He devised a physical device, initially an oblong card, evolving into a gridded card with sixteen square holes (a quarter-inch wide each). This device guided his hand to write in defined spaces.
- The System: Nyctography: This is a substitution cipher, an "square alphabet" of dots and strokes. Each character featured a large dot in the upper-left corner, ensuring legibility even in the dark by providing a consistent starting point.
- Alphabet Design: Carroll created 26 letters, plus five additional characters for common words ("and," "the") and indicators for digits or dates. The system lacked capitalization, punctuation, or direct digits, with numbers indicated by letters using a "Memoria Technica" system.
- Practical Use: The user would write one symbol per box, then shift the card down to the next line, enabling them to "jot down a few lines, or even a few pages" without leaving their bed or disturbing their sleep with light.
Carroll's Nyctography stands as a testament to his inventive mind, offering a glimpse into his methodical approach to even the most mundane of problems – like writing in the dark. It's a clever example of analog technology addressing a very human need for creative capture.