#sliderule — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #sliderule, aggregated by home.social.
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Do the calculation
I have accumulated quite a collection of calculators over the years, for school, for work, for fun. So long as the modern grid keeps going, they all work. But, maybe I should review the slide rule instructions, just in case. No batteries, no power, no internet. Just works.
Here's a thought: will all calculation be done by AI in the future and, how should that figure in to math education? Teach analog technique.
#calculator #sliderule #analog #oldtech #education #math -
Every cook needs a kitchen slide rule:
https://entropicthoughts.com/kitchen-slide-rule -
me, using a slide rule instead of any of several other calculators, because it's fun
today im using the 6" pocket model, which isnt suuper precise but it's Good Enough for working examples from this book
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Because I'm super geeky like that, I've started using a circular #SlideRule when I score #baseball games -- I set the ballpark capacity on the D scale, the attendance on the C scale, and look under the 1 on the D to read the percentage of capacity on C. Accurate enough for my scoresheets.
Just went back and filled that percentage to all the college and #WorldBaseballClassic games I've scored this year.
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Because I'm super geeky like that, I've started using a circular #SlideRule when I score #baseball games -- I set the ballpark capacity on the D scale, the attendance on the C scale, and look under the 1 on the D to read the percentage of capacity on C. Accurate enough for my scoresheets.
Just went back and filled that percentage to all the college and #WorldBaseballClassic games I've scored this year.
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Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way
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Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way
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Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way
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Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way
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Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way
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Carl F #Krafft posited: #Venturi forces account for 1806× #mass-difference in #proton & #electron but #polarity looks minor compared to #equatorial #flux. The point is, I'm working #conceptually but Krafft used a #sliderule. WHERE'S YOUR #COMPUTER‽ #electrogravitics Full #PDF t.me/gonzojourney...
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Carl F #Krafft posited: #Venturi forces account for 1806× #mass-difference in #proton & #electron but #polarity looks minor compared to #equatorial #flux. The point is, I'm working #conceptually but Krafft used a #sliderule. WHERE'S YOUR #COMPUTER‽ #electrogravitics Full #PDF t.me/gonzojourney...
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Carl F #Krafft posited: #Venturi forces account for 1806× #mass-difference in #proton & #electron but #polarity looks minor compared to #equatorial #flux. The point is, I'm working #conceptually but Krafft used a #sliderule. WHERE'S YOUR #COMPUTER‽ #electrogravitics Full #PDF t.me/gonzojourney...
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Carl F #Krafft posited: #Venturi forces account for 1806× #mass-difference in #proton & #electron but #polarity looks minor compared to #equatorial #flux. The point is, I'm working #conceptually but Krafft used a #sliderule. WHERE'S YOUR #COMPUTER‽ #electrogravitics Full #PDF t.me/gonzojourney...
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🎉 Because who doesn't want to feel like a 1950s scientist while cooking lasagna? 🤓 Apparently, the pinnacle of culinary innovation is ditching your calculator for a kitchen slide rule! 🔢 Because, you know, math is more fun when it's unnecessarily complicated. 👩🔬 Bon appétit, nerds! 🍽️
https://entropicthoughts.com/kitchen-slide-rule #1950sCooking #KitchenInnovation #CulinaryMath #SlideRule #NerdyCuisine #HackerNews #ngated -
🎉 Because who doesn't want to feel like a 1950s scientist while cooking lasagna? 🤓 Apparently, the pinnacle of culinary innovation is ditching your calculator for a kitchen slide rule! 🔢 Because, you know, math is more fun when it's unnecessarily complicated. 👩🔬 Bon appétit, nerds! 🍽️
https://entropicthoughts.com/kitchen-slide-rule #1950sCooking #KitchenInnovation #CulinaryMath #SlideRule #NerdyCuisine #HackerNews #ngated -
🎉 Because who doesn't want to feel like a 1950s scientist while cooking lasagna? 🤓 Apparently, the pinnacle of culinary innovation is ditching your calculator for a kitchen slide rule! 🔢 Because, you know, math is more fun when it's unnecessarily complicated. 👩🔬 Bon appétit, nerds! 🍽️
https://entropicthoughts.com/kitchen-slide-rule #1950sCooking #KitchenInnovation #CulinaryMath #SlideRule #NerdyCuisine #HackerNews #ngated -
🎉 Because who doesn't want to feel like a 1950s scientist while cooking lasagna? 🤓 Apparently, the pinnacle of culinary innovation is ditching your calculator for a kitchen slide rule! 🔢 Because, you know, math is more fun when it's unnecessarily complicated. 👩🔬 Bon appétit, nerds! 🍽️
https://entropicthoughts.com/kitchen-slide-rule #1950sCooking #KitchenInnovation #CulinaryMath #SlideRule #NerdyCuisine #HackerNews #ngated -
Retrotechtacular: Learning the Slide Rule the New Old Fashioned Way https://hackaday.com/2025/12/02/retrotechtacular-learning-the-slide-rule-the-new-old-fashioned-way/ #Retrotechtacular #instructional #trainingfilm #ToolHacks #sliderule
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So what does a mathsphobe do with their Saturday morning?
She cleans and lubricates her slide rules, obviously!
#contradictory #mathsphobe #ClassicEngineering #SlideRule #Pickett #VintageTech
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It's another post about #rulers -- well, of sorts.
I own a slide rule -- likely given to me by my dad. These would have been used a lot during schools and engineering bods alike. Until such time that the pocket calculator came along.
I ought to learn how to use it.
I own a copy of "The Slide Rule", by Burns Snodgrass, which is either a name, or an instruction, I'm not sure which...
Whilst I was rooting around, I came across these two gems:
The United Kingdom Slide Rule Circle: https://www.uksrc.org.uk
The International Sliderule Museum: https://www.sliderulemuseum.com
I really hope they're still being used somewhere, by some people.
Considering there's so many blooming different ones (some circular, for instance), it would be a shame these things were consigned to history.
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Today's bike ride needed a little calculation. 60 minutes at 10.9 mph, plus 5 more minutes when my bike computer app was off, equals 11.8 miles. #SlideRule #FlightComputer
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Excited to learn how to use this retro calculator!
Saw this on eBay and couldn't resist a little bid. Anyway I won, and this turned up today.
Always did like logarithms...
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Picked up an ASA E6-B flight computer circular #SlideRule at a yard sale. It's the same kind Spock uses on TOS, though his is aluminum; this one is paper. I have an aluminum one from another company, which I occasionally use to calculate my #ebike daily ride mileage when my GPS app fails. This one is more legible, and lighter weight.
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In our high school math textbook, there were formulae for converting sums of trigonometric functions to products. We were tested of their knowledge. I hated them because there was no imaginable practical use for them.
One time, my late grandmother who was a chemical engineer, found an artifact of her young days in a cabinet — a slide rule.
When I came to visit her, she showed me that thing and offered to show me how it was used. "Look, it's trivial to multiply, but to add... let me show you, there's a trick for that".
Then the true purpose of the useless formulae clicked. They were there to help people make their lives simpler in the slide rule era. And then, no one thought to remove them from the textbook and it was reprinted with those out-of-context artifacts still in. -
@tomwsmf I laid out my #sliderule for the #boardgame Acquire with a #LibreOffice spreadsheet.
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Unwinding an Unusual Slide Rule - If the Otis King slide rule in [Chris Staecker’s] latest video looks a bit familia... - https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #retrocomputing #sliderule #otisking
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Unwinding an Unusual Slide Rule - If the Otis King slide rule in [Chris Staecker’s] latest video looks a bit familia... - https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #retrocomputing #sliderule #otisking
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Unwinding an Unusual Slide Rule - If the Otis King slide rule in [Chris Staecker’s] latest video looks a bit familia... - https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #retrocomputing #sliderule #otisking
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Unwinding an Unusual Slide Rule - If the Otis King slide rule in [Chris Staecker’s] latest video looks a bit familia... - https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #retrocomputing #sliderule #otisking
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Unwinding an Unusual Slide Rule - If the Otis King slide rule in [Chris Staecker’s] latest video looks a bit familia... - https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #retrocomputing #sliderule #otisking
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Unwinding an Unusual Slide Rule https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #Retrocomputing #sliderule #otisking
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Unwinding an Unusual Slide Rule https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #Retrocomputing #sliderule #otisking
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Unwinding an Unusual Slide Rule https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #Retrocomputing #sliderule #otisking
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Unwinding an Unusual Slide Rule https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ #Retrocomputing #sliderule #otisking
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The #SlideRule, like the #LogBook, is probably as useless as the #PocketCalculator, today. But I am obsessed with those relics, even in the face of modern 64-bit and 128-bit CPUs.
I hope, in a couple of decades when I'm six-feet-under, people still appreciate those CPUs as we do the slide rule.
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Found in a thrift store. Hard to believe that people used to use this actual thing to do actual calculations to fly actual planes. #SlideRule #AnalogComputer #aviation
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I collect slide rules, and my mother-in-law just gave me a nice addition to the collection -- which might be morphing into traditional mechanical calculating devices...it's a soroban, which seems to be a form of portable abacus. Very cool.
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“It seems to me that every time those scientific laddies get busy with their slide rules life becomes more complicated. What was wrong with things the way they were?” —Robert Heinlein, Double Star, 1956
Predicting atomic rockets in the future, but not the electronic calculator or pocket computers. 😁
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Did a cool maths workshop with @Ayliean earlier at #emfcamp and spotted this #Aristo beauty on the wall. Immediately thought of @VintageProject :) #Sliderule
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Joost Bürgi and Logarithms - Logarithms are a common idea today, even though we don’t use them as often as we u... - https://hackaday.com/2024/02/27/joost-burgi-and-logarithms/ #retrocomputing #logarithms #sliderule
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Unaffected by Carrington Events, exposure to gamma rays, neutrons etc. No batteries required. Most newer versions would survive years of direct burial in dirt.
And sweetly tactile. [And visually rewarding!]
This fellow saw the virtues. 🙂
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I had to use the #SlideRule early in my #engineering education, many decades ago. Since then, I've collected many slide rules from round the globe. Of those, my absolute favourite is the #Hemmi 130W Advanced Darmstadt—one of the most basic models.
I admit that this is rather a brazen statement in the face of #FaberCastell 2/83 N Novo Duplex, #Aristo 0969 StudioLog, #Nestler 0292 Multimath-Duplex, #K&E 4081-3 Log Log Duplex Decitrig, and many other duplex, advanced, engineering slide rules.
https://amenzwa.github.io/stem/ComputingHistory/HowSlideRulesWork/