Scientific Science
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@boomzilla
College-aged adultsPeople who aren't paying attention to their surroundings are more likely to have unexpected interactions with things in their surroundings.
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@boomzilla Long ago, we had the children's story of "Hanns Guck-in-die-Luft" ("Johnny Head-in-the-air" or "Hans Stare-in the-air"). Actaully, still valid, except that you have to replace "air" with "mobile".
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@BernieTheBernie how unscientific you were back then.
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@boomzilla said in Scientific Science:
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@HardwareGeek said in Scientific Science:
@boomzilla
College-aged adultsPeople who aren't paying attention to their surroundings are more likely to have unexpected interactions with things in their surroundings.The study doesn't seem to have involved other age groups, so we don't know.
"we know that there exists at least one sheep in Scotland at least one side of which is black"
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At least it was science to solve a "scientific" miracle: the LK-99 superconductor. A story nice to read.
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Do fruit flies have a magnetic sense? A few papers say so. But when a group tried to reprodcue landmark paper results, using about 110,000 flies, they failed.
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Everybody knows you catch flies with honeys, not magnets.
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@Zerosquare Depends. Some kinds of flies prefer steaming hot
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@Zerosquare said in Scientific Science:
Everybody knows you catch flies with honeys, not magnets.
What about flies that have recently eaten ferromagnetic honey?
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33 page paper with 5154 authors.
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@jinpa you just have to be lucky to be named Aad, beating Aaron A. Aaronson to the punch.
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@kazitor said in Scientific Science:
@Zerosquare said in Scientific Science:
Everybody knows you catch flies with honeys, not magnets.
What about flies that have recently eaten ferromagnetic honey?
I don't believe anyone has studied that before. You should submit a grant proposal.
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@jinpa said in Scientific Science:
33 page paper with 5154 authors.
Everything from Boson is terrible.
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@Zerosquare Plus another grant proposal for looking for ferro-electric honey in flowering plants.
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@topspin said in Scientific Science:
@jinpa you just have to be lucky to be named Aad, beating Aaron A. Aaronson to the punch.
Shortened version of Adriaan, which is Dutch for Adrian. Wouldn't be surprised if the same derivation works in German.
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@PleegWat Hm. The town of Aachen (in Dutch Aken) comes first in list of german towns, and that's why they don't call them Bad Aachen though they could do so too.
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@BernieTheBernie At the other end of the spectrum, the race to be last in the Chicago phonebook used to be in Guinness. Now it's a mere Isadore R Zzyzx.
" For years, the last person listed in the Chicago White Pages directory was a man who went by the name of Zeke Zzzzypt. He held the distinction for several years, until Zach Zzzzyzzzzy came along."
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@jinpa Well, nowadays those younguns are "what is a phonebook?"
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@PleegWat said in Scientific Science:
@topspin said in Scientific Science:
@jinpa you just have to be lucky to be named Aad, beating Aaron A. Aaronson to the punch.
Shortened version of Adriaan, which is Dutch for Adrian. Wouldn't be surprised if the same derivation works in German.
Beat narrowly by a physiotherapist I went to once, surnamed "Aab". DDG says that's usually a Hindi Girl's name.
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This is on the wall of a school. In the southern hemisphere at that.
I'm not sure if it's is supposed to illustrate plate tectonics because for everything else …
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@LaoC said in Scientific Science:
everything else
Not everything, The direction of rotation seems to be correct. And some of the dates.
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@Bulb said in Scientific Science:
@LaoC said in Scientific Science:
everything else
Not everything, The direction of rotation seems to be correct.
And some of the dates.
Yeah, they are valid though ungrammatical calendar dates. They just managed to place them wrong both wrt the illuminated globes and the corresponding seasons.
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@Bulb said in Scientific Science:
And some of the dates.
‘Some’? I can only see one date, and they put it in the wrong half of the year.
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Winter lasts a single day (Dec 22) and rolls straight into autumn on Dec 23? Neat.
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@LaoC said in Scientific Science:
Yeah, they are valid though ungrammatical calendar dates. They just managed to place them wrong both wrt the illuminated globes and the corresponding seasons.
I don't think the dates, the ones that are correct apart from grammar, are wrong wrt. the illuminated globes. The illumination only indicates perspective, i.e. we are looking obliquely from the North side of the ecliptic, so we see the top globe illuminated because it is “behind” the Sun. So it looks to me like the top is appropriate for the spring point.
Now looking on the North pole, Earth rotates counter-clockwise (towards East) and orbits the same way, so the next position being on the left is also correct. And the date does not have the ordinal indicator, so it is not incorrect.
Now the bottom date is totally wrong. That's the biggest error. And the right one, as far as I can tell, the Winter Solstice is on 21st, not 22nd. At least usually; depending on the leap year cycle the exact points sometimes fall a day earlier.
And of course the seasons are North-hemisphere-centric. Which is probably wrong on the South hemisphere.
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@Bulb said in Scientific Science:
And the right one, as far as I can tell, the Winter Solstice is on 21st, not 22nd. At least usually; depending on the leap year cycle the exact points sometimes fall a day earlier.
Wikipedia begs to differ.
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@Bulb said in Scientific Science:
@LaoC said in Scientific Science:
Yeah, they are valid though ungrammatical calendar dates. They just managed to place them wrong both wrt the illuminated globes and the corresponding seasons.
I don't think the dates, the ones that are correct apart from grammar, are wrong wrt. the illuminated globes. The illumination only indicates perspective, i.e. we are looking obliquely from the North side of the ecliptic, so we see the top globe illuminated because it is “behind” the Sun. So it looks to me like the top is appropriate for the spring point.
True, for the Northern hemisphere that would even be correct, only in the South it's reversed. Though the perspective of the orbit looks like we were looking from just slightly askew of Sun's north pole while the illumination is they way you'd see it from the plane of the ecliptic.
And of course the seasons are North-hemisphere-centric. Which is probably wrong on the South hemisphere.
They just copied some northener's book without thinking.
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@nerd4sale said in Scientific Science:
@Bulb said in Scientific Science:
And the right one, as far as I can tell, the Winter Solstice is on 21st, not 22nd. At least usually; depending on the leap year cycle the exact points sometimes fall a day earlier.
Wikipedia begs to differ.
Somewhat. The average is still 21st. … but it also depends on timezone. In Australia, the later dates are more often correct.
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@LaoC said in Scientific Science:
True, for the Northern hemisphere that would even be correct, only in the South it's reversed.
I don't see anything to reverse here. The image is drawn from some imaginary point way outside Earth, so it doesn't matter where on Earth it is.
Though the perspective of the orbit looks like we were looking from just slightly askew of Sun's north pole while the illumination is they way you'd see it from the plane of the ecliptic.
Yes, the orbit is drawn as if viewed from quite high about the plane of ecliptic, while the Earths are drawn as if viewed from the plane of ecliptic. Since that kind of perspective skew is quite common in maps and games, I don't find it confusing.
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@Bulb said in Scientific Science:
Now the bottom date is totally wrong. That's the biggest error. And the right one, as far as I can tell, the Winter Solstice is on 21st, not 22nd. At least usually; depending on the leap year cycle the exact points sometimes fall a day earlier.
It's complicated. Very complicated. The cycle time of the Earth's orbit doesn't map onto a whole number of days anyway, and calendars must approximate. And there are other wobbles (thanks,
ObamaJupiter!) that make predicting things very difficult indeed; the Earth precesses a bit and that makes the exact date shift even after allowing for calendrical nonsense.
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@nerd4sale said in Scientific Science:
@Bulb said in Scientific Science:
And the right one, as far as I can tell, the Winter Solstice is on 21st, not 22nd. At least usually; depending on the leap year cycle the exact points sometimes fall a day earlier.
Wikipedia begs to differ.
Does it?
Looks like ‘the 21st or a day earlier’ to me
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@kazitor We were looking at the December one
Which is 21st, sometimes 22nd, in Australia almost always 22nd.
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@kazitor That's the north-hemisphere-centrism. And it's labelled that way on that painting.
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@Bulb said in Scientific Science:
@LaoC said in Scientific Science:
True, for the Northern hemisphere that would even be correct, only in the South it's reversed.
I don't see anything to reverse here. The image is drawn from some imaginary point way outside Earth, so it doesn't matter where on Earth it is.
The rightmost globe is labeled "Winter" but that's the position where it's summer in the South. The school is in the South, so labeling the dates with northern seasons is confusing at best.
Yes, the orbit is drawn as if viewed from quite high about the plane of ecliptic, while the Earths are drawn as if viewed from the plane of ecliptic. Since that kind of perspective skew is quite common in maps and games, I don't find it confusing.
Dunno, maybe I'm just used to better diagrams like the above.. Even 16th century ones were more consistent:
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In today's Nature, I read an article (marked "open access") foretelling us a very doomy future when the next supercontinet Pangaea Ultima will have formed in 250 million years. Bad Climate Change (this time naturally made) will cause a mass extinction of mammals:
Looking at their map of the supercontinent, I have a problem understanding how it formed. They seem to have taken it from some referenced articles.
One of them is
Then there is
https://www.sciencedirect.com/science/article/abs/pii/S0921818118302054
which I fail to access, I can see snippets of it only.Anyways, from what I can read from those snippets, the Atlantic is expected to close when a subduction zone opens in it, and causes a quick return of the americas to africa and europe.
But there remains a different oddity.
Take a look at the north west corner. There's Alaska, isn't it? And west of it is Chukotka, isn't it? Same as today.
But ... why is Chokotka separated from the rest of Eurasia at today's 180° longitude?
Has someone among you better access to the articles where the formation process of Pangaea Ultima is shown in more steps, and that Alaska-Chukotka can be solved?
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@BernieTheBernie said in Scientific Science:
Looking at their map of the supercontinent, I have a problem understanding how it formed.
Prediction of the future is difficult. If you're not planning to live for millions of years, this really isn't a problem you need to worry about. (250 million years is a long way ahead.)
The future relative strengths of various mid-oceanic ridges and subduction zones are extremely difficult to estimate. Another difficult thing to work out is what will happen to continental margins, the parts of the continent that are possibly below sea level. In some parts of our world, those margins are small but in other parts they're rather large, and that matters a lot for rainfall and temperature predictions. So too does the distribution of mountain ranges.
As such, with all respect to the people who have done the work, all this stuff is very speculative. There's too many unknowns, and too much dependence on fine detail that isn't strongly supported by the underlying geophysical model; the error bars are too large because much of what matters depends on relative sizes of things and even small errors can have large effects.
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@dkf said in Scientific Science:
As such, with all respect to the people who have done the work, all this stuff is very speculative.
Or, to borrow from Neil Stephenson, the question is: are [they] discovering truth, or just wanking?
I think we can safely assume this is a case of the second.
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@ixvedeusi Everyone working on predicting future supercontinents knows that it's vastly speculative, as there's too many uncertainties in the deep mantle dynamics. Those people are open about it; they're basically doing a bit of fun and there's nothing wrong with that. The problem comes when you've got other people who look at climate models based on those (i.e., already much more uncertainty) and then go on to boldly predict in the press that mammals are in trouble in 250 million years.
For comparison, 250 million years ago was just after a great extinction event when the ecosystem was severely depleted, and predicting the rise of either mammals or dinosaurs/birds to prominence would have been ridiculously speculative at best. You also wouldn't have predicted modern continental patterns from the layout of landmasses in either the Permian or Triassic periods.
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@dkf ObNotWithThatAttitude
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@dkf said in Scientific Science:
they're basically doing a bit of fun and there's nothing wrong with that.
Oh don't get me wrong, I'll always appreciate a good wank. I just think it's a mistake to try and enroll the product of it in school.
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@PleegWat said in Scientific Science:
Thanks.
From the article:with Chukotka attached to North America (it is on the North American plate).
So when the 'muricans bought alaska from the russians, they did draw the border at the wrong place. But discussing that in more detail could move us into .
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@ixvedeusi said in Scientific Science:
@dkf said in Scientific Science:
they're basically doing a bit of fun and there's nothing wrong with that.
Oh don't get me wrong, I'll always appreciate a good wank. I just think it's a mistake to try and enroll the product of it in school.
Sounds kinda harsh towards all those IVF kids
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CRS - scientifically called Alzheimer's - is a disease many scientists are performing research about. And many companies. Because .
But we are still waiting for real results.
Simple reason: "scientifc misconduct".
https://www.science.org/content/article/co-developer-cassava-s-potential-alzheimer-s-drug-cited-egregious-misconduct
(likely paywalled)