Dead reckoning
by Ronald W. Doerfler · first published 1993
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4HN commenters
2009–2024first – last mentioned
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…got it. Goes into gory detail about to manually calculate logs and roots, reciprocals and transcendentals. It was a fascinating read, I expected it to help me sleep at night and it did the opposite. "Dead Reckoning: Calculating Without Instruments" https://www.amazon.com/gp/product/0884150879/
on “Tips to Improve Your Mental Math Ability” ↗For those intrigued by this kind of thing, this book (paper only, but the web page has more resources) may be interesting: Dead Reckoning: Calculating Without Instruments, by Ronald W. Doerfler (http://www.myreckonings.com/Dead_Reckoning/Dead_Reckoning.ht... ) More good stuff at http://myreckonings.com/wordpress/ . The nomography posts…
on “Math Trick: Calculating the Square Root by Hand” ↗Two excellent books on the subject are Secrets of Mental Math by Arthur Benjamin (for beginners) and Dead Reckoning: Calculating Without Instruments by Ronald Doerfler (more advanced). The Mind Your Decisions blog (http://mindyourdecisions.com/blog/tag/mental-math/) has a lot of neat mental math tricks, but they're…
on “The Dying Art of Mental Math Tricks” ↗There are lots of ways, depending on what you want to calculate. Here's a fantastic book on the subject: https://www.amazon.com/Dead-Reckoning-Calculating-Without-In...
on “Number systems of the world, sorted by complexity of counting (2006)” ↗Currently, Code Complete 2 by McConnell. I'm in chapter 5 right now. Also, Dead Reckoning: Calculating Without Instruments by Doerfler. It's extremely difficult for me to follow, so I'm still in the first chapter. Sometime in the future, I might read Essential Java and Unit Testing in Java:…
on “Ask HN: Summer readings?” ↗…(Mar 1960) https://www.jstor.org/stable/27956101 Bayer, "Setting up an approximate antilog table", The Mathematics Teacher, Vol. 55, No. 3 (Mar 1962) https://www.jstor.org/stable/27956560 Doerfler, "Dead Reckoning: Calculating Without Instruments", Taylor Trade Publishing (Sep 1993) https://www.amazon.com/Dead-Reckoning-Calculating-Without-In...
on “Calculating Logarithms by Hand (2010) [pdf]” ↗Doerfler's _ Dead Reckoning: Calculating Without Instruments _ (pages 47-73) deals extensively with this issue. https://archive.org/stream/deadreckoningcal00doer#page/46/mo...
on “Techniques for Factoring Numbers in Your Head” ↗