You Learn Something New Every Day

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Mo
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Re: You Learn Something New Every Day

Post by Mo » 04 Oct 2017, 21:11

Jennifer wrote:
04 Oct 2017, 19:26
JasonL wrote:
04 Oct 2017, 17:42
There are other metrics people look at. A critique about those kind of stories is the unemployment rate is designed to target a specific feature of the economy and using it as a proxy for "hard times" is a failure of intuition as much as a failure of the metric.
Does the same criticism apply to those who look at the unemployment rate and use it as a proxy for "good times" (as evidenced by the low unemployment rate)?
I hate this fucking critique. You compare U-3 to U-3 historically. If you want to include underemployed and discouraged workers, look at U-6*. It exists and it's tracked historically. The classic move is partisans comparing U-6 to U-3 to say things are bad because look. U-3 is popular for the same reason as the Dow, you can compare over many many decades.

* U-6 pre recession low was at 8.0%, recent low was 8.4%
his voice is so soothing, but why do conspiracy nuts always sound like Batman and Robin solving one of Riddler's puzzles out loud? - fod

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JD
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Re: You Learn Something New Every Day

Post by JD » 05 Oct 2017, 20:12

The Nemeth Parasol was a real, actually working plane:

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dbcooper
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Re: You Learn Something New Every Day

Post by dbcooper » 09 Oct 2017, 00:58

Slip inside a sleeping bag.

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Mo
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Re: You Learn Something New Every Day

Post by Mo » 09 Oct 2017, 08:41

I thought that was going to be a link to a Trump tweet.
his voice is so soothing, but why do conspiracy nuts always sound like Batman and Robin solving one of Riddler's puzzles out loud? - fod

no one ever yells worldstar when a pet gets fucked up - dhex

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the innominate one
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Re: You Learn Something New Every Day

Post by the innominate one » 09 Oct 2017, 10:37

My favorite part of the story is:
The women’s group, on which we were now relying, wasn’t really any more encouraging. One of them said “It looks and tastes like Kaolin & Morphine”, which was a popular medicine for diarrhea (it’s still around).
"Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong remedies." -E Benn

"No shit, Sherlock." -JsubD

"now is the time to go fuck yourself until you die." -dhex

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JD
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Re: You Learn Something New Every Day

Post by JD » 11 Oct 2017, 12:03

The Geneva drive is a mechanical way of translating continuous rotary motion into intermittent rotary motion. It's one of those things that seems kind of obvious once you look at it, but must have taken a leap of imagination to design for the first time.

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the innominate one
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Re: You Learn Something New Every Day

Post by the innominate one » 11 Oct 2017, 12:09

Cool. And I agree. Obvious in retrospect, like many things. Would be difficult to originate the concept.
"Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong remedies." -E Benn

"No shit, Sherlock." -JsubD

"now is the time to go fuck yourself until you die." -dhex

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Warren
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Re: You Learn Something New Every Day

Post by Warren » 11 Oct 2017, 13:22

JD wrote:
11 Oct 2017, 12:03
The Geneva drive is a mechanical way of translating continuous rotary motion into intermittent rotary motion. It's one of those things that seems kind of obvious once you look at it, but must have taken a leap of imagination to design for the first time.

Image
You don't see them much, they tend to wear out quickly.

ETA
From Wikipedia:
The figure shows the motions curves for an external four-slots Geneva drive, in arbitrary units. There is a discontinuity in the acceleration when the drive pin enters and leaves the slot. This generates an "infinite" peak of jerk (Dirac peak), and therefore vibrations.

Image
Motion curves for one turn of the drive wheel, from top to bottom: angular position θ, angular velocity ω, angular acceleration α and angular jerk ja.
Women with strollers are legitimately the worst people, and should, like motorcyclists, not be considered people for liability and criminal purposes. - lunchstealer

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Kwix
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Re: You Learn Something New Every Day

Post by Kwix » 11 Oct 2017, 20:07

JD wrote:
11 Oct 2017, 12:03
The Geneva drive is a mechanical way of translating continuous rotary motion into intermittent rotary motion. It's one of those things that seems kind of obvious once you look at it, but must have taken a leap of imagination to design for the first time.

Image
They are cool. One of the first full sized pieces milled for the "10,000 year clock" were geneva wheels for the chime mechanism:
http://longnow.org/clock/chimes/
"I want to live in a world where the Democrats are competent enough to secretly have millions of illegal aliens vote, but dumb enough to concentrate them in California and New York."=--Mo

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Andrew
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Re: You Learn Something New Every Day

Post by Andrew » 12 Oct 2017, 08:06

Titan is larger than Mercury. As is Ganymede.
We live in the fucked age. Get used to it. - dhex

holy shit there will never be an end until the sweet release of death (as dictated by the death panels, natch) - lunch

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