Mastodawn

What Is pH: The Science of Acidity and Alkalinity https://theblogofscience.com/what-is-ph-the-science-of-acidity-and-alkalinity/

#pH #Chemistry #AcidBase #Science #Biochemistry #Environment #Technology #ChemicalReactions #Enzymes #Measurement

What Is pH: The Science of Acidity and Alkalinity - The Blog of Science

pH is a fundamental concept in chemistry that measures how acidic or basic a substance is. The term literally means "power of hydrogen" and represents the

The Blog of Science

Lydia Repke 1d ago

🎉 Our paper on predicting survey question quality with ML is accepted in Survey Research Methods!

Explore better survey design with the free Survey Quality Predictor (SQP 3.0) 👇
https://sqp.gesis.org/

Thanks to Barbara Felderer, Wiebke Weber, Jonas Schweisthal & Ludwig Bothmann for this collaborative effort! 🙌

@GESIS
#SurveyResearch #QuestionDesign #DataQuality #SurveyMethodology #Measurement

SQP

Mark Levison Oct 10

"Missing birth certificate" denial... but it was attached. 🤦♀️
This is what happens when you measure only processing speed: Canadian immigration officers making decisions in seconds on complex applications.
Local optimization breaking global systems.
https://agilepainrelief.com/blog/mismeasurement-mess-ircc-leads-the-way-in-measuring-the-wrong-thing/
#Measurement #UnintendedConsequences

Show thread

Doyle Oct 8

@q3w3e3
Had to happen. 1/12=0.0833333333 is just not practical on a calculator. Now let’s do hours: 10 o’clock noon.
#design #measurement

Christian Kent 𝘊𝘒 :＼﹥Oct 7

Best nerdy video you’ll see in 2025. You’ll laugh or cringe so hard your wisdom teeth will pop out.

Top comment pasted in here.

https://youtube.com/watch?v=sdWEGzWFcCc

#units #measurement #metric

Hippo 🍉Oct 7

"What's the temperature?"
"My phone says it's this much"

How do these phones get the numbers? Do they have inbuilt thermometers or are they using their location to pull information from some service?

If the latter, where does that service get its information from? There ultimately need to be thermometers scattered around in some form or other, right?

#AskFedi #Sensors #Measurement #Temperature

Show thread

ƧƿѦςɛ♏ѦਹѤʞ Oct 3

@RnDanger
Exactly! The huge range in definitions of a 'league' by different cultures at different times is presumably why people stopped using it.
In any case, its use in the title of the film was completely nonsensical. :-)
cf. "The Beast From 20,000 Fathoms" - not quite as ludicrous at only 3x Challenger Deep. 😬

#units #metrology #measurement #FactCheckAShowOrFilm
#HashTagGames

Dan Q Oct 1

I'm looking at listing for a ¼" to ⅝" screw adapter, for which the seller warns that I should "please allow 1-3cm error".

A 3cm error would mean that a ⅝" screw could result in a screw thread anywhere between 1⅘" and... minus half an inch, I guess? (I don't even know how to make the concept of negative lengths fit into my brain.)

I suppose this seller could send me an empty envelope and declare that it contained an infinitesimally small adapter. At which point... I'd be the one that was screwed!

#note #maths #ebay #measurement

Via: 🔗 https://danq.me/2025/10/01/27366/