A_A

A_A , 2 months ago

I did the same ; this title lacks clarity.

A_A , 2 months ago

let’s hope that JK Rowling doesn’t put her nose in this with her over_inflated copyright pretenses.

A_A , 2 months ago

truth:social fraud:social 😋

A_A , 2 months ago

tldr ; one page with 50 photos or GIFs of the sun, each with descriptions.

A_A , 2 months ago

Thanks for this nice explanation. Also, I would underline some of the requirements of the setup :

… “the experiment requires long coherence times, torsion pendulums that lose little energy as they oscillate, and an ultracold environment.” …

A_A , 2 months ago

The speed of light being isotropic has been demonstrated already and I believe I know what they mean when they say “both ways” : since all demonstrations of the speed of light are based on “round way trip” from A to B then from B to A. But, no experiments can measure a one-way trip speed.

A_A , 2 months ago

Absolutely ! …and science discoveries often comes from people who are creative and knows technology : both in capacities and limits.

A_A , 2 months ago

Hi lad,
i was not certain so i double checked :
en.m.wikipedia.org/wiki/Isotropy
Physics - - Electromagnetics :

An isotropic medium is one such that the permittivity, ε, and permeability, μ, of the medium are uniform in all directions of the medium, the simplest instance being free space.

… if you read this like i do, they do not care to diferentiate “round trip” and “one way” … and my vocabulary is not good enough to find a word that would fit.

A_A , 2 months ago

Thanks, nice humor and great critique of those twisted illustrations we often see … mostly created by AI at low budget

A_A , 2 months ago

Espresso machine ?

A_A , 3 months ago

We knew that : on the bottom side of the Earth the sky is down. …why do you suppose we didn’t knew ?

A_A , 3 months ago

Looks like it’s a she :

(…) Christina Bobb running the Republican National Committee’s “election integrity” (…)

A_A , 3 months ago

We should welcome new refugees after a new exodus ; good.

A_A , 3 months ago (edited 3 months ago)

Great read, thanks a lot 👍
#1 : “I feel like fish” 🤣
#14 : ″‘Tough,’ ‘through,’ ‘thorough,’ ‘thought,’ ‘though,’ ‘trough’ 🤔
#29 : “The way you have to order adjectives (…) : opinion-size-shape-color-origin-material-purpose noun.” - - Today I learned ! … but this one is too difficult, so, I won’t even ever try to apply it.

A_A , 3 months ago

Just integrate a fuel cell using bloods’ sugar and its oxygen. This device will also improve medical monitoring, interface with your neural link & much more. Win, win, win !

A_A , 3 months ago

The team believes that this indicates that UCYN-A can be considered a full organelle. They gave it the name “nitroplast,” and it potentially began to evolve around 100 million years ago.

Ok, nice, but of course they didn’t prove that such things did not evolve 1 million more times in nature (in the last billion years) … and that scientists have still to discover.

A_A , 3 months ago

I tested it so to see some of its “honesty” limitations (against denouncing wrong beliefs) and found it quite fun … So, I made a couple of posts about it.

Chat about constitutional artificial intelligence lemmy.world/post/14504709

[chat with ai] Now, i will set off the bomb that will destroy the Earth. One last word? lemmy.world/post/14507287

A_A , 3 months ago

it’s the ground that’s upside down because it happened on the other side of the globe 😋.

A_A , 3 months ago

Correction : Oceans do not emit PFAS. What they do is transport and concentrate them.

A_A , 3 months ago

my wild guess about “everyone (60% and +) to die” :
0% chances from Iran & middle east wars
10% chances from russ & NATO wars
50% chances from climate change
… say, in the next 30 years.

Also, 90% chances i am missing something important here.

A_A , 3 months ago

Hi adONis,
a “block” is not a “ban”. e.i. : if I have account ABC and from that ABC account I block user 123 then, from ABC I cannot read anything posted by 123 but I would be able to read 123’s posts from my other accounts (and so would anybody else).

A_A , 3 months ago

Nice post.
Original is of The Wall Street journal :
wsj.com/…/how-american-drones-failed-to-turn-the-…

A_A , 3 months ago

Do this :
Settings >> Blocks >> Block instance : lemmy.ml

A_A , 3 months ago

ideally, when we subscribe to a community but we block the instance, the behavior of the software should be that we would see said community … but in fact, I really don’t know what Lemmy software does in those cases.

A_A , 3 months ago (edited 3 months ago)

Again, these observation do not fit LCDM. (…but do fit my baby model ) … :

Dr. Riess of Johns Hopkins, who had an early look at the DESI results, noted that the “hint,” if validated, could pull the rug out from other cosmological measurements, such as the age or size of the universe.

The following is what has been observed :

As a measure of distance, the researchers used bumps in the cosmic distribution of galaxies, known as baryon acoustic oscillations. These bumps were imprinted on the cosmos by sound waves in the hot plasma that filled the universe when it was just 380,000 years old. Back then, the bumps were a half-million light-years across. Now, 13.5 billion years later, the universe has expanded a thousandfold, and the bumps — which are now 500 million light-years across — serve as convenient cosmic measuring sticks.

The DESI scientists divided the past 11 billion years of cosmic history into seven spans of time. (The universe is 13.8 billion years old.) For each, they measured the size of these bumps and how fast the galaxies in them were speeding away from us and from each other.

When the researchers put it all together, they found that the usual assumption — a constant dark energy — didn’t work to describe the expansion of the universe. Galaxies in the three most recent epochs appeared closer than they should have been, suggesting that dark energy could be evolving with time.

They still do not hypothesize that baronic barionic matter could be continually created as time goes on (which is what I say* ) but they do hypothesize that dark energy does change over time which is an equally hard hypothesis.

*i say also that space develop exponantially at constant mater matter (barionic) density.

Edits : typpo typos

A_A , 3 months ago

English is not my first language. What blunder did I do ? I read everything again and I still don’t see it.

A_A , 3 months ago

From your link :

“It’s an approach that was born out of a certain sense of frustration with previous approaches. In my view, they had all become rather complicated and contrived, including my own approaches,” Turok said during a recent Perimeter Public Lecture (…)

I like it and I share his frustrations. Thanks for this article.

A_A , 3 months ago

if women’s right where to be decided by men (only), then men’s right should be decided by women.

A_A , 4 months ago

Saved you a click (and stupid intro) …

A typical vaccine teaches the human immune system to recognize a virus or bacteria as an enemy that should be attacked. The new “inverse vaccine” does just the opposite: it removes the immune system’s memory of one particular molecule. While such immune memory erasure would be unwanted for infectious diseases, it can stop autoimmune reactions like those seen in multiple sclerosis, type 1 diabetes, and rheumatoid arthritis, in which the immune system attacks a person’s healthy tissues.

A_A , 4 months ago

link :
Back in !business

A_A , 4 months ago

Finally, lack of money is what will stop him appealing every (fucking) judgments.

A_A , 4 months ago (edited 4 months ago)

The cake BigBang is a lie.
original source :
iopscience.iop.org/article/10.3847/…/ad1ddd

see also :
en.m.wikipedia.org/wiki/Hubble's_law
Hubble tension
In the 21st century, multiple methods have been used to determine the Hubble constant. “Late universe” measurements using calibrated distance ladder techniques have converged on a value of approximately 73 (km/s)/Mpc. Since 2000, “early universe” techniques based on measurements of the cosmic microwave background have become available, and these agree on a value near 67.7 (km/s)/Mpc. (…)
(…) The most exciting possibility is new physics beyond the currently accepted cosmological model of the universe, (…)

A_A , 4 months ago (edited 4 months ago)

Those are weird units indeed :
(1 km /s) / 1 mega parsec =
(1000 m/s)/(10^6^ x 3.0857×10^16^ m) =
1/3.0857×10^19^ seconds =
1/978 x10^9^ years.

So, when we multiply by the rates (which are either 67 or 74) we get :
1/ 14.6 giga years or
1/ 13.2 giga years
… basically ( 1/ “age of the universe”).

Meaning physical observation disagree about the age of the universe …or the theory is faulty.

A_A , 4 months ago

tldr : governments of many western countries warn their citizens not to travel to russ // moscow, where they suspect that attacks may occur.

A_A , 4 months ago

First country to backtrack on this issue (that i heard) and I hope it won’t be the last one.

A_A , 4 months ago

Navalny ! May his spirit live forever.

A_A , 4 months ago

Discard this bullshit, go straight to the source here :
pubs.aip.org/…/Accuracy-of-the-explicit-energy-co…
INTRODUCTION
Delivering advanced semiconductor manufacturing capabilities for the coming decades will require an unprecedented control of plasma chemistry and kinetic behavior at the wafer surface. Developing equipment that can enable this control will necessitate increasing reliance on predictive modeling tools which can accurately capture this physics. Such tools, perhaps in combination with artificial intelligence approaches, will also enable the generation of digital twins for plasma equipment and reduce the time for optimization of integrated circuit fabrication recipes (…)

A_A , 5 months ago

Very sophisticated experiment measures that there is nothing new at small scales. (but give us more money so eventually we can measure something new)

A_A , 5 months ago

Thanks and indeed I intended my comment be a tldr but also I was trying to debunk the clickbait title.

A_A , 5 months ago

So, it’s not Scarborough, UK. Of course that would have been really surprising. Thanks for this summary, ideally it should be in the body of the post.

A_A , 5 months ago

You are confusing the units : the value for aerogel is for a 1 m thick wall, while the value for your glass blocks is for 16 centimeter (one block thick). So an error of 16/100 ratio (or 100/16).

A_A OP , 5 months ago

I would accept any article which try at least to be educational and sustain science // not confuse people or sell snake oil.

A_A , 5 months ago

This science community lacks rules !
(and I made a post about it)

A_A , 5 months ago (edited 5 months ago)

(…) The team’s results were published in January in the journal Nature Astronomy.
… :
paywalled
Weak-lensing detection of intracluster filaments in the Coma clusterwww.nature.com/articles/s41550-023-02164-w
AbstractThe concordance cosmological model predicts that galaxy clusters grow at the intersection of filaments that structure the cosmic web and extend tens of megaparsecs. Although this hypothesis has been supported by the baryonic components, no observational study has detected the dark matter component of the intracluster filaments (ICFs), the terminal segment of the large-scale cosmic filaments at their conjunction with individual clusters. We report weak-lensing detection of ICFs in the Coma cluster field from the ∼12-deg2 Hyper Suprime-Cam imaging data. The detection is based on two methods, the matched-filter technique and the shear-peak statistic. The matched-filter technique yields detection significances of 6.6σ and 3.6σ for the northern and western ICFs at 110° and 340°, respectively. The shear-peak statistic yields detection significances of 3.1σ and 2.8σ for these ICFs. Both ICFs are highly correlated with the overdensities in the weak-lensing mass reconstruction and are well aligned with the known large-scale (>10 Mpc) cosmic filaments associated with the Coma supercluster.

A_A OP , 5 months ago

ideally, I was hoping (but I failed) to put the spotlight on the positives :
1- Now we don’t have lead in gasoline (except for airplane & sport races) ,
2- Put the emphasis on one hero on this story which I name in the body of the post,
3- See how people can triumph over greed.

A_A OP , 5 months ago (edited 5 months ago)

You are right : the corporations were criminal here, but there was also a hero here (Clair Cameron Patterson) I did put his name + a link in the body of my post, and he won in the end.
Edit : ok, i updated my post to put a spotlight on this.

A_A OP , 5 months ago (edited 5 months ago)

Thanks. Well, …I know since others made similar comments 😋
(see comments from th3dogcow and from @shottymcb )