Today I Learned

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Today I learned that cleaning a white hat can be done with bleach cleaner, but it’s important to rinse it before wearing it again. I also discovered that "oyster veneering," a woodworking technique from the late 1600s, is experiencing a minor revival despite its labor-intensive nature. Additionally, I learned that the factorial of 23 (23!) equals 25,852,016,738,884,976,640,000, which interestingly has 23 digits, a unique coincidence among factorials. I found out that medical specialists often spend less than 10 minutes with patients, and that watching TV can contribute to weight gain. Other insights included the fact that a kiss can transfer around 80 million microbes, and that bureaucracy can sometimes hinder employment opportunities. The discussion also touched on various trivia, such as the emotional sensitivity of barn owls and the complexities of gravitational lensing around black holes.
  • #5,001
DaveC426913 said:
As an exfoliant
Don't let it get in your eyes if you try this, though. :wink:
 
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  • #5,002
gmax137 said:
I found a place nearby that claims to have it. How is it normally used? On toast? Any advice appreciated!

Ibix said:
Yes, it's a spread. Butter is optional. You can also dissolve it in hot water and drink it, but I don't particularly like that.

Do note that there is a very good reason why the stuff is a byword for "highly divisive". It's a unique flavour, kind of sharp (somehow) and very salty, and people really do either love it or insist that it's inedible.

DaveC426913 said:
On toast... As an exfoliant... As axle grease...

Ibix said:
Don't let it get in your eyes if you try this, though. :wink:

Well, TIL I am in the "like it" Marmite camp. It is, as mentioned, very salty. And "sharp." It reminds me of a bullion paste, with maybe swiss cheese mixed in. I wouldn't spread it on too thick, but I like it. And @DaveC426913 is right, it looks like axle grease (and sticks to my fingers like grease, too).

Is this truly popular in the UK?
 
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  • #5,003
gmax137 said:
I don't think we have marmite in the US.
Vegemite is better. :oldtongue::oldbiggrin:
 
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  • #5,004
strangerep said:
Vegemite is better. :oldtongue::oldbiggrin:
"I said, do you speak my language?
He just smiled, and gave me a Vegemite sandwich."
 
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  • #5,005
gmax137 said:
Is this truly popular in the UK?
Any supermarket will have it, so I suppose so.
strangerep said:
Vegemite is better. :oldtongue::oldbiggrin:
I don't think I've even seen that here. I've certainly never tried it. Maybe one day...
 
  • #5,006
gmax137 said:
I found a place nearby that claims to have it. How is it normally used? On toast? Any advice appreciated!
I love it on toast. Trying for the first time spread very thin and put butter on first. The butter counters the bitter flavour of the marmite. It's a balance!
Aussies have Vegemite which from memory is similar.
Marmite also goes with peanut butter, in my opinion
If you hate it, then it will not sit with anything.
 
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  • #5,007
Ibix said:
Any supermarket will have it, so I suppose so.

I don't think I've even seen that here. I've certainly never tried it. Maybe one day...
It has a lot of B vitamins too.
 
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  • #5,008
pinball1970 said:
Aussies have Vegemite which from memory is similar.
Yeah, we're all happy little vegemites...
 
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  • #5,009
I know a lot about American cars of the sixties but this was news to me:

Chevrolet 1969, option V75: Liquid Tire Chain Traction Dispenser

liquid-tire-chain.jpg
 
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  • #5,010
jack action said:
I know a lot about American cars of the sixties but this was news to me:

Chevrolet 1969, option V75: Liquid Tire Chain Traction Dispenser
The driver could activate a control on the instrument panel, which would turn on two aerosol canisters, each mounted over the rear tires.
So you could accelerate, and maybe decelerate, but you couldn't turn. Hmm.

(Actually I guess you could use the common dirtbike trick of steering with the back end and throttle in deep mud and sand... I never tried it on ice) :wink:
 
  • #5,011
berkeman said:
So you could accelerate, and maybe decelerate, but you couldn't turn. Hmm.
Yes, yes, exactly: an American car. :wink::biggrin:
 
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  • #5,012
jack action said:
I know a lot about American cars of the sixties but this was news to me:
There was a predecessor for that, actually
:wink:

And it's still in regular use :woot:
 
  • #5,013
berkeman said:
(Actually I guess you could use the common dirtbike trick of steering with the back end and throttle in deep mud and sand... I never tried it on ice)
Uhmm... DON'T, there is too much positive feedback. :cry:
(or maybe it is just an exponential function, anyhow, uncontrollable)
 
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  • #5,014
Tom.G said:
Uhmm... DON'T, there is too much positive feedback. :cry:
(or maybe it is just an exponential function, anyhow, uncontrollable)
I have heard ice steering can be done with a motorcycle if sidecar equipped.
 
  • #5,017
TIL that the effects of neutrinos from one second after the big bang have been detected with high confidence.

 
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  • #5,019
Once again an example that shows - take that with a grain of salt - this unpleasant, and huge gap between popular science (completely useless) and the scientific paper (completely ununderstandable).

One takes a couple of pints not to go nuts about that non-information, and the other takes a study of physics. When will someone start to summarize such a paper for educated people?
 
  • #5,020
fresh_42 said:
When will someone start to summarize such a paper for educated people?
I used to read Science News, a slim biweekly magazine. I thought it was pretty good, but I let it lapse and have not read it in years. Maybe I will look into that.

The main problem (IMO) with summarizing papers for educated people (particularly physics papers) is that most educated people cannot read the mathematics. It is just hieroglyphs to them, likely to provoke "oh how I hated math in school." Even if the pinnacle of their studies was factoring quadratic equations.
 
  • #5,021
I've settled on Science magazine, by American Association for Advancement of Science (AAAS).

I took Nature for a while, but it leaned too heavily on the life sciences for me. Science covers a wider variety of fields, (weekly, about $3.17 per issue with yearly subscription).

Cheers,
Tom
 
  • #5,022
TIL that "The Wiz" referred to the laws of thermodynamics.

 
  • #5,024
Hornbein said:
They want $39 to "rent" that article. Does anyone actually do that?
My MO is read the abstract and see if I understand any of it. Then check here
 
  • #5,025
$39 is pretty outrageous to me, especially if it was produced from government funded research.

I would look into other ways to get the article.
Sometimes I can get articles from either Research Gate or Academia.
Sometimes I can get them from the author's website (usually a university website).
Sometimes that can be found on a preprint site.
Sometimes I can find articles or preprints through a google search.
 
  • #5,026
pinball1970 said:
Einstein came up with some rules for his marriage. I remember laughing in disbelief reading them, even 100 years ago this must have been pretty outrageous.

"A. You will make sure:

1. that my clothes and laundry are kept in good order;
2. that I will receive my three meals regularly in my room;
3. that my bedroom and study are kept neat, and especially that my desk is left for my use only.

B. You will renounce all personal relations with me insofar as they are not completely necessary for social reasons. Specifically, You will forego:

1. my sitting at home with you;
2. my going out or travelling with you.

C. You will obey the following points in your relations with me:

1. you will not expect any intimacy from me, nor will you reproach me in any way;
2. you will stop talking to me if I request it;
3. you will leave my bedroom or study immediately without protest if I request it.
D. You will undertake not to belittle me in front of our children, either through words or behavior."
TIL I learned that this was written to his first wife. Either she met these conditions or he would divorce. In this video you may see this letter in his own handwriting.

 
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  • #5,027
The marriage didn't last long after this. She split with the kids. No woman could tolerate that.
 
  • #5,028
Today I learned that,
The integral of X X
is the planck area of the cartesian diagram.
 
  • #5,029
TIL that "orphaned" oil wells are a thing. A very bad thing.

 
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  • #5,030
TIL that the Olympus camera company harbored a decades-long conspiracy to hide a billion dollars worth of speculation losses. https://www.youtube.com/watch?v=bCfL-EqkTnY. The execs were convicted but served no time.
 
  • #5,031
Hornbein said:
TIL that the Olympus camera company harbored a decades-long conspiracy to hide a billion dollars worth of speculation losses. https://www.youtube.com/watch?v=bCfL-EqkTnY. The execs were convicted but served no time.

Fun fact: The company was first named Takachiho Seisakusho. Takachiho is a mountain that Japanese gods live on, according to Japanese mythology. They introduced the brand Olympus (after the mythical Greek mountain & home to the Greek gods) in 1921. During the war years they went back to the name Takachiho, returning to roost on Olympus in 1949.
[-- Wikipedia]
 
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  • #5,032
TIL that David Letterman has a big gap between his front teeth. He must use a prosthesis to cover it up.

(Lauren Hutton, same. But I already knew that.)
 
  • #5,033
That gap's always been there, that I remember.
 
  • #5,034
Hornbein said:
TIL that David Letterman has a big gap between his front teeth. He must use a prosthesis to cover it up.

That's his signature thing. I don't think he covers it up. Although he has had a full beard for the last several years, so I guess there's that.
 
  • #5,035
collinsmark said:
That's his signature thing. I don't think he covers it up. Although he has had a full beard for the last several years, so I guess there's that.
Aha. All the photos I got from Google showed no gap.
 
  • #5,036
Hornbein said:
Aha. All the photos I got from Google showed no gap.

Hmm. You're right. I don't see the gap in recent pictures. Maybe he had some dental work done? Dentures?

Well, it used to be his signature thing, anyway.
 
  • #5,037
TIL that Bacopa (just to be clear: Chaenostoma cordatum) is actually a perennial plant.

It's sold here as a one-season pot-plant only, so we too just got rid of the old ones at the end of Autumn, as everybody else.

That is, till one of them just kept on blooming: it was just too nice to be thrown away, and we had a slot under the lamp anyway (we keep some plants inside, with growth-lights during winter), so why not?

.. . and then it kept on blooming all winter. It was a bit suspicious, so I've checked if it's a mutant (should I expect it start to hunt flies/neighbours? o0)) or we've just missed something?

... and so we need to expand the lamp area for next winter :cool:
 
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  • #5,038
I think all plants are perennial, and it is only climate that kills nonnatives each season.
 
  • #5,039
DaveC426913 said:
I think all plants are perennial, and it is only climate that kills nonnatives each season.
Some plants just bloom fruit and die.
Certain peas are like this. Maybe some tomato strains also.
 
  • #5,040
Today i learned that forces acting on the bones produce piezoelectric effects, which then play some important physiological roles.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8615512/

It has been demonstrated that bone and blood vases are piezoelectric, namely, electric signals are locally produced upon mechanical stimulation of these tissues. The specific effects of electric charge generation on different cells are not fully understood, but a substantial amount of evidence has suggested their functional and physiological roles.
 
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  • #5,041
There are pizeo electric crystals in the bone.
It is though but not proven I guess that there is a control sequence that goes:
bone deformation from mechanical stress --> piezoelectric currents --> deposition of more bone material
In this way, more bone grows where it is needed most, where the mechanical stresses are greatest.
 
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  • #5,042
TIL: why I pop and sizzle and feel shocks whenever I try to get up from bed. Or a chair.
 
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  • #5,043
TIL that the Chinese have had a space station for the past two years.
 
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  • #5,044
TIL that I am unsuitable for an asthma trial. Quite disappointed.
 
  • #5,045
pinball1970 said:
TIL that I am unsuitable for an asthma trial. Quite disappointed.
Asthma sucks. Would not recommend.
 
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  • #5,046
DaveC426913 said:
Asthma sucks. Would not recommend.
Thanks Dave.
 
  • #5,047
TIL (yesterday actually) that I had been doxxed and had false information posted about me online. The information was detailed enough that my HOA president knew that it was me even though the exact address wasn't posted. I had to create an account on the site just to report the post and ask it to be taken down. It took a day in which some pretty disturbing posts were made but they finally deleted it. I've since asked them to ban the user as well. Pretty scary incident.
 
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  • #5,048
Borg said:
TIL (yesterday actually) that I had been doxxed and had false information posted about me online. The information was detailed enough that my HOA president knew that it was me even though the exact address wasn't posted. I had to create an account on the site just to report the post and ask it to be taken down. It took a day in which some pretty disturbing posts were made but they finally deleted it. I've since asked them to ban the user as well. Pretty scary incident.
I found out that "your location" on my phone has a 360° picture right in front of the house I live in. This is a street where basically nothing happens at all. That was scary.
 
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  • #5,049
I finally learned some basic Measure Theory and Lebesgue integration. I'm 52 and have an MS in QFT. Why didn't I learn this in my classes? It's easy, and it's awesome! I'll never look at integration the same way.

-Dan
 
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  • #5,050
fresh_42 said:
I found out that "your location" on my phone has a 360° picture right in front of the house I live in. This is a street where basically nothing happens at all. That was scary.
Does it create online posts saying here's a bad person and here's where he lives?
 
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