#sliderule — Public Fediverse posts

I finally had my grandfather's slide rule cuff links made into earrings.

He was an electrical engineer, I am a mechanical engineer. He graduated in 1950, learning engineering with a slide rule, before calculators.

#engineering #SlideRule

Visiting Hudson Valley Renegades (Yankee affilliate, BOO!) beat the Jersey Shore BlueClaws 6-5. Not an exceptional game, but not a bad one either. Mediocre teams.: Renegades brought their win/loss ratio up to 50%, BlueClaws at a dismal 17%, I think (43-71, and I'm not going to double-check my #SlideRule math.)

I recorded the pitchers' info more completely than usual -- generally, I don't care about pitchers too much. Too many of 'em.

#HighA #MinorLeague #Baseball #SouthAtlanticLeague

Anyone remember these? #OldTech #SlideRule

@samuelpepys

"Home and to study my new rule till my head aked cruelly."

Sam trying to come to terms with the magic of logarithm. Good work, Sam.

#Pepys #sliderule

Today's AA #MinorLeague #Baseball scorecard: The Akron RubberDucks (Cleveland) destroyed the visiting Somerset Patriots (Yankees) 17 - 3. Ducks batted around the lineup twice, so I scored the 8th & 9th on a separate sheet.

My quirky statistic that I like to calculate on a circular #SlideRule: Percentage of seats filled, 46% (3,518 asses in seats against a capacity of 7,630.)

Photos taken with my #CharmeraClone #ToyCamera

Beyond AI: The Real Challenge

https://rmdellorfanoauthor.com/2026/07/03/beyond-ai-the-real-challenge/

I'm trying to learn how to use the wind speed calculator side of my ASA E6-b and MK-6B Kane Dead Reckoning flight computers. Purely out of curiosity. I'm not studying to become a pilot, nor am I very deeply interested in mathematics; I just like to know how things work. If I learn a little bit about how airplanes are piloted in the process, that's nice, too. #SlideRule

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

#sliderule #cooking

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.

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.

The Zero-Power Flight Computer

https://web.brid.gy/r/https://hackaday.com/2026/03/23/the-zero-power-flight-computer/

Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way

https://web.brid.gy/r/https://hackaday.com/2026/02/18/sliderule-simulator-teaches-you-how-to-do-calculations-the-old-fashioned-way/

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...

🎉 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

So what does a mathsphobe do with their Saturday morning?

She cleans and lubricates her slide rules, obviously!

#contradictory #mathsphobe #ClassicEngineering #SlideRule #Pickett #VintageTech

#sliderule

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.

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