Today I Learned

  • Thread starter Greg Bernhardt
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In summary: Today I learned that Lagrange was Italian and that he lamented the execution of Lavoisier in France during the French Revolution with the quote:"It took them only an instant to cut off this head and a hundred years might not suffice to reproduce it's...brains."
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TIL, or rather, it was reconfirmed that Space Travel Has 'Permanent Effects'

Astronaut Scott Kelly, who spent 340 days aboard the International Space Station, said that being in space appears to have "permanent" effects that aren't fully understood.

“The environment astronauts are exposed to while in space is unlike anything we experience here on earth. Specifically, astronauts are exposed to high levels of radiation and carbon monoxide, and a micro-gravity environment which causes loss of bone and muscle, vision impairment and effects on our immune system to name a just a few,” he wrote in his prepared remarks to the House Science, Space and Technology committee. “These are very real issues that need to be solved before the human race is able to reach destinations beyond the Earth and the Moon.”

"Exposure to the space environment has permanent effects we simply do not fully understand," he added.

Due to the absence of gravity, Kelly’s skin “did not touch anything for nearly a year,” and because of this it was “extremely sensitive and became inflamed.”
Sounds like he has some kind of neuropathy/neuritis.
 
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Physics news on Phys.org
  • #1,402
I learned today that Montana is the state that is least paid attention to in daily news. There are probably a lot of mountain lions over there. :nb)
 
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Today I learned that the stain on my blue T-shirt is actually soil from Bikini Atoll.
 
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Today I learned never to watch "flash flood on i-15 30 miles north of las vegas." Once I did, Youtube decided I would like to watch filthy porn in foreign languges.
 
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TIL:
Nearly all of microbiology, Epstein eventually learned, was built on the study of a tiny fraction of microbial life, perhaps less than one per cent, because most bacteria could not be grown in a laboratory culture, the primary means of analyzing them. By the time he matured as a scientist, many researchers had given up trying to cultivate new species, writing off the majority as “dark matter”—a term used in astronomy for an inscrutable substance that may make up most of the universe but cannot be seen.
 
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  • #1,407
TIL
the Russians really did build a "Doomsday Machine"

http://www.nytimes.com/1993/10/08/world/russia-has-doomsday-machine-us-expert-says.html
Russia Has 'Doomsday' Machine, U.S. Expert Says
By WILLIAM J. BROAD
Published: October 8, 1993

Russia has a computerized system that can automatically fire its nuclear arsenal in wartime if military commanders are dead or unable to direct the battle, a leading American expert on the Russian military says.

http://archive.wired.com/politics/security/magazine/17-10/mf_deadhand?currentPage=all
The point of the system, he explains, was to guarantee an automatic Soviet response to an American nuclear strike. Even if the US crippled the USSR with a surprise attack, the Soviets could still hit back. It wouldn't matter if the US blew up the Kremlin, took out the defense ministry, severed the communications network, and killed everyone with stars on their shoulders. Ground-based sensors would detect that a devastating blow had been struck and a counterattack would be launched.

The technical name was Perimeter, but some called it Mertvaya Ruka, or Dead Hand. It was built 25 years ago and remained a closely guarded secret.
 
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  • #1,408
Fortunately there have always been men who acted by far more responsible than their leaders:

https://en.wikipedia.org/wiki/Stanislav_Petrov
On September 26, 1983, just three weeks after the Soviet military had shot down Korean Air Lines Flight 007, Petrov was the duty officer at the command center for the Oko nuclear early-warning system when the system reported that a missile, followed by another one and then up to five more, were being launched from the United States. Petrov judged the report to be a false alarm, and his decision is credited with having prevented an erroneous retaliatory nuclear attack on the United States and its NATO allies that could have resulted in large-scale nuclear war. Investigation later confirmed that the satellite warning system had indeed malfunctioned.
 
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Today I learned that any remaining faith I had in the wisdom of the average citizen of my country (the not-so-United Kingdom of Great Britain and Northern Ireland) was misplaced, although I'm inclined to blame politicians in general for the result, encouraging self-interest not in a "win-win" way but at the expense of everyone else, and wildly distorting facts as if there were no possible consequences.

"Democracy is the worst form of government, except for all the others."
 
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Jonathan Scott said:
"Democracy is the worst form of government, except for all the others."
Sir Charles Popper?
 
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fresh_42 said:
Sir Charles Popper?
It's usually attributed to Churchill, but he himself wrote "it is said that ..." before that quote.
 
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Jonathan Scott said:
It's usually attributed to Churchill, but he himself wrote "it is said that ..." before that quote.
I just thought to have read once a similar one "Democracy is awful but it's the best we've got" and I think they referred to Popper. But I might be wrong.
 
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TIL who is Nigel Farage
Jonathan Scott said:
although I'm inclined to blame politicians in general for the result, encouraging self-interest not in a "win-win" way but at the expense of everyone else, and wildly distorting facts as if there were no possible consequences.

Didn't your C Northcote Parkinson predict that's what bureaucracy will do ? And that by around 2030 100% of Britons would be working for their civil service?
We're certainly headed that way here in US as politicians try to base the economy on paying one anothers medical bills and welfare benefits.

Good Luck to you guys
FWLIW i think you did the right thing.
 
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TIL that for about 300 years, the Immovable Ladder has sat in the same place at the Church of the Holy Sepulchre "due to an understanding that no cleric of the six ecumenical Christian orders may move, rearrange, or alter any property without the consent of the other five orders". :oldeyes:
 
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My mother knows physics rules better than me!:redface:
 
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Lisa! said:
My mother knows physics rules better than me!:redface:
Oh no this is the one ?:biggrin:
 
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Pepper Mint said:
Oh no this is the one ?:biggrin:

:oldconfused::olduhh:
 
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Lisa! said:
My mother knows physics rules better than me!:redface:
Nitpick warning...
Do you really mean she knows physics rules better than she knows you? If not, ending with "than I do" would probably convey your meaning more successfully.
 
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  • #1,420
Lisa! said:
My mother knows physics rules better than me!:redface:
noun
as in 'rules of physics'

or verb , transitive
as in "Physics Rules !" ?
 
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  • #1,421
Physics does indeed rule better than humans.
 
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mfb said:
Physics does indeed rule better than humans.
Da... ! And this shortly after I've seen Hawking on TV stating there is no perfection in this world (explaining the fluctuations in CMB).:wink:
 
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I'd heard the name Fermilab before, but just seconds ago learned it is the University of Chicago/DOE's particle accelerator. I'm just pleased with myself that I was able to recognize a particle accelerator from 28,000 feet!
 
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TIL that the "Oregon Chub" is the first and only fish on the endangered fish species list, to be delisted.
Scientific Name: Oregonichthys crameri

Status: Delisted due to recovery

Recent Activity: On February 18, 2015, the USFWS announced the removal of the Oregon chub, and its critical habitat, from the list of Endangered and Threatened Species, and the Oregon chub became the first fish ever to be delisted due to recovery.
[ref: U.S. Fish & Wildlife Service, Oregon Fish and Wildlife Office]

I learned this whilst researching a solution to the mosquito problem that the pre-fair crew is describing at the location of the OCF. The fair starts in 10 days. Tickets are not available at the gate. You must buy them in advance.

ps. I also learned today, that not all hippies are fond of patchouli oil; "Life hack: pouring gasoline on yourself and lighting a match usually keeps mosquitos away. And it smells better than patchouli"

I still don't know what patchouli smells like.
 
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OmCheeto said:
I still don't know what patchouli smells like.
Similar to the smoke of weed. A little bit sweeter.
 
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Huge Helium Gas Field Found in Africa Is a ‘Game Changer’
https://www.yahoo.com/news/huge-helium-gas-field-found-181044267.html
TIL" the discovery of a huge helium gas field in East Africa is a “game changer for the future security of society’s helium needs” amid a global shortage."

There must be a lot of heavy elements in the region.
 
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Astronuc said:
Huge Helium Gas Field Found in Africa Is a ‘Game Changer’
https://www.yahoo.com/news/huge-helium-gas-field-found-181044267.html
TIL" the discovery of a huge helium gas field in East Africa is a “game changer for the future security of society’s helium needs” amid a global shortage."

There must be a lot of heavy elements in the region.
I wonder if it were related to the east african rift system, its movements resp.
Edit: I suspect the shortage will be back again as soon as the chinese collider will be cooled down.
 
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OmCheeto said:
ps. I also learned today, that not all hippies are fond of patchouli oil; "Life hack: pouring gasoline on yourself and lighting a match usually keeps mosquitos away.

whats-that-smell.gif

[Source: http://www.toothpastefordinner.com/index.php?date=062716]
 
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TIL people could change glucose's chemical structure to reduce our body's absorption of sugar in our blood stream. Awesome!
 
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Astronuc said:
There must be a lot of heavy elements in the region.
is it near that ancient natural reactor ? Oklo i think ?
 
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Pepper Mint said:
TIL people could change glucose's chemical structure to reduce our body's absorption of sugar in our blood stream. Awesome!
But then the news makes me wonder how diet sugar is functionally different from that special sugar they produce. Uhm, maybe a new variant of the same kind but will increasing or changing the physical shape of glucose induce more coming production of CO2 in our blood ? What does our body do with those glucoses that can't be absorbed ? What about statistical data obtained in measuring how this approach is more helpful to patients of diabetes ? etc.
I guess it's all just about "Eat less sugar" then, which is the point of diet sugar sold in most supermarkets.
 
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Pepper Mint said:
TIL people could change glucose's chemical structure to reduce our body's absorption of sugar in our blood stream. Awesome!

Got a link to the article you read? I'm interested in this.
 
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jim hardy said:
is it near that ancient natural reactor ? Oklo i think ?
Oklo is in Gabon, which is on the west coast in Central Africa. Gabon is bordered by Equatorial Guinea to the northwest, Cameroon to the north, the Republic of the Congo on the east and south, and the Gulf of Guinea to the west. The helium discovery is in Tanzania, which is across the continent on the east coast of Africa. Tanzania is bordered by Kenya and Uganda to the north; Rwanda, Burundi, and the Democratic Republic of the Congo to the west; Zambia, Malawi, and Mozambique to the south; and by the Indian Ocean to the east.

Geographic references from Wikipedia articles on Gabon and Tanzania
 
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jim hardy said:
Got a link to the article you read? I'm interested in this.
I took it from TV news of Japan.
 
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Pepper Mint said:
What does our body do with those glucoses that can't be absorbed ? What about statistical data obtained in measuring how this approach is more helpful to patients of diabetes ? etc.
I guess it's all just about "Eat less sugar" then, which is the point of diet sugar sold in most supermarkets.
i have tried to read about metabolism of sugar but the chemical names are ever sooo loooong and I'm bad with names anyway...i get lost.
Not everybody metabolizes sugar the same though.

i've been experimenting with my own blood glucose

cut out sugar almost entirely
bought one of those meters and log morning readings on the fridge.
here's April, i haven't scanned May or June yet
i noted what i ate late in the day.

glucoseApril 2016.jpg
In me, starchy food turns overnight into glucose as evidenced by my experiments eating them with or after dinner , shown above
so now I'm eating cauliflower instead of potatoes and pasta .

dropped about six pounds in April
and by late May no longer waking up at night with numb feet

i'm at the age i have to watch what i eat
i have known for years that sugar causes in me craving for more of it
so probably i am diabetes prone.

finally losing the craving to snack in the evenings
and morning BG readings are trending down 108 yesterday .

Slow steady progress i hope, or at least halt the decline.

old jim
 
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