nicdex @nicdex

7 posts7 participants0 posts today

**Steven Carneiro** @mischiefist@vivaldi.net · 19h

Steven Carneiro @mischiefist@vivaldi.net

A problem in geometric measure theory:
#mathematics #geometry #measurement #research #science

https://www.popularmechanics.com/science/math/a64392219/100-year-old-problem-proof/

Popular Mechanics · 6dMathematicians Wrote a Proof for a 100-Year-Old Problem—and May Have Just Changed GeometryBy Caroline Delbert

**Lazy Lemur** @lazylemur@lethallava.land · 2d

Lazy Lemur @lazylemur@lethallava.land

volumetric measurements in the kitchen requires remembering which spoon you used the last time to define your volume. this is especially true when starting out and you don't yet have the feel for quantities.

#measurement #cooking

**Dennis Alexis Valin Dittrich** @davdittrich@fediscience.org · 3d

Dennis Alexis Valin Dittrich @davdittrich@fediscience.org

Improving Numerical Measures of Human Feelings: The Case of Pain https://d.repec.org/n?u=RePEc:lan:wpaper:421926304&r=&r=exp
"… proposed and validated a new method to measure the experienced intensity of acute pain across individuals. This method proved to be overwhelmingly more accurate and sensitive than standard, established methods for experimentally-induced acute pain which are used in medical, clinical and research applications
… In the case of experienced pain intensity, the mechanism that enables the new #measurement method to excel might indeed be rooted in its well-calibrated scale: #money.
… Money-free standard methods ask people for numerical estimations of their experiences without a benchmark for the numerical scale, which might lead them to choose salient numbers or intermediate values.
… Monetary amounts provide interpersonally comparable references and thereby reduce the intrinsic subjectivity in pain measurements.
… The use of monetary incentives is unproblematic for those applications, as it is already common practice to reward participation in them"
#ExperimentalEcon #calibration #validity #interpersonalComparison

**Bud Talbot** @bud_t@m.ai6yr.org · 3d *

3d *

Bud Talbot @bud_t@m.ai6yr.org

A paper that we've been working on for quite a while just got published! Check it out our if you're into #physicsed and #measurement #psychometrics

@academicchatter

"Is the Force Concept Inventory biased across the intersections of gender and race?"
https://www.researchgate.net/publication/390567150_Is_the_Force_Concept_Inventory_biased_across_the_intersections_of_gender_and_race

**Paul Houle** @UP8@mastodon.social · 4d

Paul Houle @UP8@mastodon.social

Hot wheels: Researcher cycles through Mississauga to map air temperature differences across the city

https://phys.org/news/2025-03-hot-wheels-mississauga-air-temperature.html

Phys.org · Mar 28Hot wheels: Researcher cycles through Mississauga to map air temperature differences across the cityBy Sharon Aschaiek

#bicycle #temperature #research

**Joyce Bell** @joycebell@mas.to · 4d

Joyce Bell @joycebell@mas.to

TIL all about varas. #vara #measurement #californiahistory

https://sfba.social/@morgan/114297691493843587

For years Yerba Buena continued to remain a village, attracting little attention. Yet it grew gradually, and in 1846 its population numbered 200 souls. On April 1, 1847, it contained 79 buildings, that is, 22 shanties, 31 frame houses and 26 adobe dwellings. In the course of five months 78 new tenements were erected, and the population was increased to 500. On January 30, 1847, the name of Yerba Buena was changed to San Francisco in an ordinance published in the California Star by Washington Bartlett. On March 10, 1847, the new city was surveyed by Jasper O'Farrell. It fronted the cove, and included the Telegraph Hill and the Rincon, extending about three fourths of a mile from north to south, and two miles from east to west, the whole embracing about one and one-half square miles. The town was laid off into lots of fifty varas, or yards, square; six of them making a building block, bounded on four sides by streets. In August, 1847, 700 had been surveyed and nearly 450 were sold at a cost of less than $16 apiece. This marked the first speculation in real estate in San Francisco; the bargains were many but the buyers few. But then the discovery of gold was yet to come in order to revolutionize the existing state of things in the young and peaceful San Francisco of forty-seven years ago.

SFBA.socialMorgan Fletcher :vbike: (@morgan@sfba.social)Attached: 1 image @davetroy@toad.social A vara is also a unit of measurement. I know that, because I'm a #CaliforniaHistory nerd. https://www.nist.gov/blogs/taking-measure/vara-standard-length-not-so-standard-history When the gringo lawyers and squatters took the land from the Californios after 1848, all the legal maneuvering dealt with original Spanish land grant documents, so everything was in varas. https://www.newspapers.com/article/the-san-francisco-examiner-the-gem-of-th/161749896/

**Deadline** @deadline@mastodon.social · 5d

Deadline @deadline@mastodon.social

VideoAmp Stakes Claim As True Nielsen Alternative At Upfront Event For Ad Buyers And Sellers
#News #Advertising #Measurement #Nielsen #Upfronts #VideoAmp

https://deadline.com/2025/04/videoamp-stakes-claim-as-true-nielsen-alternative-upfronts-1236363993/

Deadline · 5dVideoAmp Stakes Claim As True Nielsen Alternative At Upfront Event For Ad Buyers And SellersBy Dade Hayes

**Steen Eiler Jørgensen** @oz1sej@mastodon.online · Apr 1

Apr 1

Steen Eiler Jørgensen @oz1sej@mastodon.online

100 Hz thrust measurement of Klima A6-4 model rocket motor using Vernier dual-range force sensor. Calculated total impulse is 2.6 newton-seconds, corresponding to an effective exhaust velocity of 657 m/s for 4.0 grams of fuel.

Graph of thrust as a function of time. The thrust increases slightly and linearly for around 0.3 seconds, after which it increases a lot faster, still linearly, to a maximum of around 7.5 newtons. After the peak, it again decreases fast and in a linear fashion. Total burn time 0.9 seconds.

#modelrocketry #measurement

**Adrian Segar** @ASegar@mastodon.social · Mar 28

Mar 28

Adrian Segar @ASegar@mastodon.social

One of the dangers of requiring measurable outcomes is that it restricts us to concentrate on what can be measured, not what's important

https://www.conferencesthatwork.com/index.php/facilitating-change/2014/01/why-measurable-outcomes-arent-always-a-good-thing

On measurable outcomes: A self-referential comic entitled "Self-Description" with three panels. By XKCD, Comic #688. The contents of any one panel are dependent on the contents of every panel including itself. In the first panel's pie chart, "this image" refers to the entire comic image, the one that can be downloaded from xkcd (and the entire comic as displayed here above). In the second panel the amount of black used in each panel is displayed in a bar chart. This actually makes this panel the one that uses most black. The third panel features a scatter plot labeled "Location of black ink in this image." It is the first quadrant of a cartesian plane with the zeroes marked. The graph is the whole comic scaled proportionally to fit the axes, so the last panel also has to contain an image of itself having an image of itself ad infinitum.

#FacilitatingChange #MeasurableOutcomes #learning

**Inautilo** @inautilo@mastodon.social · Mar 28

Mar 28

Inautilo @inautilo@mastodon.social

#Design #Analyses
The fallacy of optical alignment · “You don’t have to nudge, you can measure instead.” https://ilo.im/1630q4

_____
#Alignment #Measurement #PixelPushing #VisualDesign #ProductDesign #UiDesign #WebDesign

**Hacker News** @h4ckernews@mastodon.social · Mar 24

Mar 24

Hacker News @h4ckernews@mastodon.social

Researchers search for more precise ways to measure pain

https://www.washingtonpost.com/science/2025/03/23/pain-measure-precision-research/

The Washington Post · Mar 23Researchers search for more precise ways to measure painBy Mark Johnson

#HackerNews #Researchers #Pain

**CBC Canada** @cbccanada_mirror@mastodon.hongkongers.net · Mar 22

Mar 22

CBC Canada @cbccanada_mirror@mastodon.hongkongers.net

WATCH | Why did Canada switch to metric?
Here's what Canadians thought of switching to metric decades ago as we look back on why it happened in the first place.

#measurement #history #Canada
https://www.cbc.ca/player/play/9.6694195?cmp=rss