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Author Topic:   Coffee House Musing
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(1)
Message 298 of 380 (897695)
09-10-2022 12:29 AM
Reply to: Message 297 by Phat
09-10-2022 12:05 AM


Re: Cool. Something Sorta Good.
If it fried all of the i-phones it would be time to buy Apple Stock.
If it fried all the I-phones there won't be an Apple or a stock market

Edited by Tanypteryx, .


Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 297 by Phat, posted 09-10-2022 12:05 AM Phat has replied

Replies to this message:
 Message 301 by Phat, posted 09-10-2022 12:08 PM Tanypteryx has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(2)
Message 305 of 380 (897721)
09-10-2022 1:52 PM
Reply to: Message 304 by Phat
09-10-2022 1:34 PM


Re: Giving Doom A Rest
Phat writes:
Tangle writes:
Doom! Doom! We're all Doomed!

Give it a rest.

The issue is are we ready? Doom is inevitable.
No, the issue is WHY THE FUCK DO YOU HAVE TO POST YOUR STUPID CRAP IN A THREAD THAT IS SPECIFICALLY SET UP TO TALK ABOUT COOL SCIENCE STUFF?
Go fuck yourself you pathetic little prick!

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 304 by Phat, posted 09-10-2022 1:34 PM Phat has replied

Replies to this message:
 Message 306 by Phat, posted 09-10-2022 1:55 PM Tanypteryx has replied
 Message 310 by Theodoric, posted 09-10-2022 4:33 PM Tanypteryx has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


Message 307 of 380 (897723)
09-10-2022 1:58 PM
Reply to: Message 306 by Phat
09-10-2022 1:55 PM


Re: Giving Doom A Rest
You just have to smear your crap everywhere don't you?

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 306 by Phat, posted 09-10-2022 1:55 PM Phat has replied

Replies to this message:
 Message 308 by Phat, posted 09-10-2022 2:00 PM Tanypteryx has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(2)
Message 314 of 380 (899454)
10-14-2022 12:14 AM


Off on a road trip to Utah
The wife and I are heading out tomorrow on a road trip to the Provo area of Utah to visit here brother who has just been diagnosed with lung cancer. I'm hoping to get a chance to shoot photos and also collect some dragonfly eggs to rear out over the winter.

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


Replies to this message:
 Message 315 by vimesey, posted 10-14-2022 6:04 AM Tanypteryx has not replied
 Message 318 by Tanypteryx, posted 10-21-2022 9:25 PM Tanypteryx has replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(3)
Message 318 of 380 (899991)
10-21-2022 9:25 PM
Reply to: Message 314 by Tanypteryx
10-14-2022 12:14 AM


Re: Off on a road trip to Utah
Well, back on the road again tomorrow morning. I managed to get up a nice stream flowing out of the Wasatch Mountains and got a few dragonflies including a female I was hoping for and she seems to be depositing eggs for me.
My wife went with her brother all week to his radiation treatments. They seem to make him pretty tired and he has lost his appetite. Yesterday his blood pressure was quite low. I'm glad we came to visit now.
There are winter storm alerts for tomorrow, but I think we can slide into Oregon's lower elevations before the snow hits the mountain passes.

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 314 by Tanypteryx, posted 10-14-2022 12:14 AM Tanypteryx has replied

Replies to this message:
 Message 319 by Tanypteryx, posted 10-23-2022 8:15 PM Tanypteryx has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(2)
Message 319 of 380 (900150)
10-23-2022 8:15 PM
Reply to: Message 318 by Tanypteryx
10-21-2022 9:25 PM


Re: Off on a road trip to Utah
We woke up in Baker City with about 2 inches of snow on our car, and lots in the surrounding mountains, but we had clear roads all the last 300+ miles and made it home without mishap, My specimens all made it home alive also, so tomorrow will be spent shooting portraits and taking care of the eggs the female oviposited for me.

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 318 by Tanypteryx, posted 10-21-2022 9:25 PM Tanypteryx has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(2)
Message 324 of 380 (908316)
03-10-2023 12:30 PM


Room Temp Superconducting
Scientists Create “Reddmatter” – Game-Changing Room-Temperature Superconductor
I'm hoping this will lead to the revolution in technology that has been promising ever since superconductivity was discovered.
quote:
“With this material, the dawn of ambient superconductivity and applied technologies has arrived,” according to a team led by Ranga Dias, an assistant professor of mechanical engineering and of physics. In a paper published on March 8 in the journal Nature, the researchers describe a nitrogen-doped lutetium hydride (NDLH) that exhibits superconductivity at 69 degrees Fahrenheit and 10 kilobars (145,000 pounds per square inch, or psi) of pressure.
Although 145,000 psi might still seem extraordinarily high (pressure at sea level is about 15 psi), strain engineering techniques routinely used in chip manufacturing, for example, incorporate materials held together by internal chemical pressures that are even higher.
Scientists have been pursuing this breakthrough in condensed matter physics for more than a century. Superconducting materials have two key properties: electrical resistance vanishes, and the magnetic fields that are expelled pass around the superconducting material. Such materials could enable:
  • Power grids that transmit electricity without the loss of up to 200 million megawatt hours (MWh) of the energy that now occurs due to resistance in the wires
  • Frictionless, levitating high-speed trains
  • More affordable medical imaging and scanning techniques such as MRI and magnetocardiography
  • Faster, more efficient electronics for digital logic and memory device technology
  • Tokamak machines that use magnetic fields to confine plasmas to achieve fusion as a source of unlimited power
Previously, the Dias team reported creating two materials—carbonaceous sulfur hydride and yttrium superhydride—that are superconducting at 58 degrees Fahrenheit/39 million psi and 12 degrees Fahreneheit/26 million psi respectively, in papers in Nature and Physical Review Letters.
quote:
Given the importance of the new discovery, Dias and his team went to unusual lengths to document their research and head off criticism that developed in the wake of the previous Nature paper, which led to a retraction by the journal’s editors. That previous paper has been resubmitted to Nature with new data that validates the earlier work, according to Dias. The new data was collected outside the lab, at the Argonne and Brookhaven National Laboratories in front of an audience of scientists who saw the superconducting transition live. A similar approach has been taken with the new paper.
quote:
Hydrides created by combining rare earth metals with hydrogen, then adding nitrogen or carbon, have provided researchers a tantalizing “working recipe” for creating superconducting materials in recent years. In technical terms, rare earth metal hydrides form clathrate-like cage structures, where the rare earth metal ions act as carrier donors, providing sufficient electrons that would enhance the dissociation of the H2 molecules. Nitrogen and carbon help stabilize materials. Bottom line: less pressure is required for superconductivity to occur.
In addition to yttrium, researchers have used other rare earth metals. However, the resulting compounds become superconductive at temperatures or pressures that are still not practical for applications.
Lutetium looked like “a good candidate to try,” Dias says. It has highly localized fully-filled 14 electrons in its f orbital configuration that suppress the phonon softening and provide enhancement to the electron-phonon coupling needed for superconductivity to take place at ambient temperatures. “The key question was, how are we going to stabilize this to lower the required pressure? And that’s where nitrogen came into the picture.”
Nitrogen, like carbon, has a rigid atomic structure that can be used to create a more stable, cage-like lattice within a material and it hardens the low-frequency optical phonons, according to Dias. This structure provides the stability for superconductivity to occur at lower pressure.
Dias’s team created a gas mixture of 99 percent hydrogen and one percent nitrogen, placed it in a reaction chamber with a pure sample of lutetium, and let the components react for two to three days at 392 degrees Fahrenheit.
The resulting lutetium-nitrogen-hydrogen compound was initially a “lustrous bluish color,” the paper states. When the compound was then compressed in a diamond anvil cell, a “startling visual transformation” occurred: from blue to pink at the onset of superconductivity, and then to a bright red non-superconducting metallic state.
“It was a very bright red,” Dias says. “I was shocked to see colors of this intensity. We humorously suggested a code name for the material at this state—‘reddmatter’—after a material that Spock created in the popular 2009 Star Trek movie.” The code name stuck.
The 145,000 psi of pressure required to induce superconductivity is nearly two orders of magnitude lower than the previous low pressure created in Dias’s lab.
Hope springs eternal...My initial impression is this seems more likely to be real than the Pons/Fleishman debacle. I wonder how much lutetium is available and what are the costs of extraction and refining. Could this breakthrough perhaps be the magic bullet humanity needs to avoid the global warming that threatens Planet Earth?
Reference: “Evidence of near-ambient superconductivity in a N-doped lutetium hydride” by Nathan Dasenbrock-Gammon, Elliot Snider, Raymond McBride, Hiranya Pasan, Dylan Durkee, Nugzari Khalvashi-Sutter, Sasanka Munasinghe, Sachith E. Dissanayake, Keith V. Lawler, Ashkan Salamat and Ranga P. Dias. 8 March 2023. Nature.
DOI: 10.1038/s41586-023-05742-0

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


Replies to this message:
 Message 325 by Tanypteryx, posted 03-10-2023 1:48 PM Tanypteryx has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(1)
Message 325 of 380 (908317)
03-10-2023 1:48 PM
Reply to: Message 324 by Tanypteryx
03-10-2023 12:30 PM


Re: Room Temp Superconducting
wikipedia:
Occurrence and production of Lutetium
Monazite
Found with almost all other rare-earth metals but never by itself, lutetium is very difficult to separate from other elements. Its principal commercial source is as a by-product from the processing of the rare earth phosphate mineral monazite (Ce,La,...)PO
4, which has concentrations of only 0.0001% of the element, not much higher than the abundance of lutetium in the Earth crust of about 0.5 mg/kg. No lutetium-dominant minerals are currently known. The main mining areas are China, United States, Brazil, India, Sri Lanka and Australia. The world production of lutetium (in the form of oxide) is about 10 tonnes per year. Pure lutetium metal is very difficult to prepare. It is one of the rarest and most expensive of the rare earth metals with the price about US$10,000 per kilogram, or about one-fourth that of gold.
It's hard to see how a technology breakthrough based on lutetium, considering it rarity and cost, could be practical.

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 324 by Tanypteryx, posted 03-10-2023 12:30 PM Tanypteryx has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(3)
Message 345 of 380 (908631)
03-18-2023 1:05 AM
Reply to: Message 344 by AZPaul3
03-18-2023 12:22 AM


Re: More JWST
The away stuff? What this scope was built for? Staggeringly beyond expectations. JWST is the most revealing scope we ever aimed at the sky and the data is orders of magnitude beyond expectations in both quality and quantity.

What a beautiful machine.
And we are seeing things that were invisible to us before JWST, in distance, and wavelength and intrinsic faintness. And spectroscopy up the yingyang. Piles and piles of new observations to explain, but also to add to what we already know about the Universe. (rubbing hands together mentally). This is getting really exciting! Astronomy and astrophysics golden age is here and I'm pleased to be alive to see big answers, but some new bigger questions!
Science nerds built that fucker!

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 344 by AZPaul3, posted 03-18-2023 12:22 AM AZPaul3 has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


Message 357 of 380 (910248)
04-20-2023 12:04 AM
Reply to: Message 356 by AZPaul3
04-19-2023 11:14 PM


Re: A Hubble Constant Divided
Both methods used appear solid and accurate from our knowledge of the cosmos. That means something is missing in our understanding of the universe.
They both cannot be measuring the same thing. So, that means that there are hidden features in the Universe affecting the measurements of one or both supernovae and CMB.
I think i understand how the super novae measurements work, but I don't see how the Hubble Constant is derived from CMB data. I am not sure what the data in the CMB measurements represents. We have all seen the CMB maps, but how they get from that to the Hubble Constant is not clear at all.
I don't think this problem of 2 HC values is going to be solved until we understand both dark matter and dark energy.
BTW, MrID claims to have the answers.
Also, want to play with our new toy.
Just couldn't resist could you?

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 356 by AZPaul3, posted 04-19-2023 11:14 PM AZPaul3 has replied

Replies to this message:
 Message 360 by AZPaul3, posted 04-20-2023 1:14 AM Tanypteryx has replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(1)
Message 358 of 380 (910249)
04-20-2023 12:06 AM
Reply to: Message 356 by AZPaul3
04-19-2023 11:14 PM


Re: A Hubble Constant Divided
It's spinning the wrong direction!! No wonder the HC is screwed up!

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 356 by AZPaul3, posted 04-19-2023 11:14 PM AZPaul3 has replied

Replies to this message:
 Message 359 by AZPaul3, posted 04-20-2023 12:09 AM Tanypteryx has seen this message but not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


Message 361 of 380 (910253)
04-20-2023 1:22 AM
Reply to: Message 360 by AZPaul3
04-20-2023 1:14 AM


Re: A Hubble Constant Divided
Perfect, thanks!

Stop Tzar Vladimir the Condemned!

What if Eleanor Roosevelt had wings? -- Monty Python

One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie

If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy

The reason that we have the scientific method is because common sense isn't reliable. -- Taq


This message is a reply to:
 Message 360 by AZPaul3, posted 04-20-2023 1:14 AM AZPaul3 has not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(1)
Message 364 of 380 (912932)
10-06-2023 8:07 PM


Strong Evidence of Humans in N. America 21K-23K Years Ago
Further evidence points to footprints in New Mexico being the oldest sign of humans in Americas by Christina Larson
quote:
New research confirms that fossil human footprints in New Mexico are likely the oldest direct evidence of human presence in the Americas, a finding that upends what many archaeologists thought they knew about when our ancestors arrived in the New World.
The footprints were discovered at the edge of an ancient lakebed in White Sands National Park and date back to between 21,000 and 23,000 years ago, according to research published Thursday in the journal Science.
The estimated age of the footprints was first reported in Science in 2021, but some researchers raised concerns about the dates. Questions focused on whether seeds of aquatic plants used for the original dating may have absorbed ancient carbon from the lake—which could, in theory, throw off radiocarbon dating by thousands of years.
The new study presents two additional lines of evidence for the older date range. It uses two entirely different materials found at the site, ancient conifer pollen and quartz grains.
The reported age of the footprints challenges the once-conventional wisdom that humans didn't reach the Americas until a few thousand years before rising sea levels covered the Bering land bridge between Russia and Alaska, perhaps about 15,000 years ago.
"This is a subject that's always been controversial because it's so significant—it's about how we understand the last chapter of the peopling of the world," said Thomas Urban, an archaeological scientist at Cornell University, who was involved in the 2021 study but not the new one.
Thomas Stafford, an independent archaeological geologist in Albuquerque, New Mexico, who was not involved in the study, said he "was a bit skeptical before" but now is convinced.
"If three totally different methods converge around a single age range, that's really significant," he said.
The new study isolated about 75,000 grains of pure pollen from the same sedimentary layer that contained the footprints.
The researchers also studied accumulated damage in the crystal lattices of ancient quartz grains to produce an age estimate.
"White Sands is unique because there's no question these footprints were left by people, it's not ambiguous," said Jennifer Raff, an anthropological geneticist at the University of Kansas, who was not involved in the study.
More information: Bente Philippsen et al, Dating the arrival of humans in the Americas, Science (2023). DOI: 10.1126/science.adk3075. Just a moment...
Jeffrey S. Pigati et al, Independent age estimates resolve the controversy of ancient human footprints at White Sands, Science (2023). DOI: 10.1126/science.adh5007. Just a moment...

Stop Tzar Vladimir the Condemned!
What if Eleanor Roosevelt had wings? -- Monty Python
One important characteristic of a theory is that it has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie
If evolution is shown to be false, it will be at the hands of things that are true, not made up. --Percy
The reason that we have the scientific method is because common sense isn't reliable. -- Taq

Replies to this message:
 Message 365 by AZPaul3, posted 10-06-2023 9:37 PM Tanypteryx has replied
 Message 366 by Percy, posted 10-07-2023 9:16 AM Tanypteryx has seen this message but not replied

  
Tanypteryx
Member
Posts: 4344
From: Oregon, USA
Joined: 08-27-2006
Member Rating: 5.9


(2)
Message 371 of 380 (912962)
10-07-2023 12:14 PM
Reply to: Message 365 by AZPaul3
10-06-2023 9:37 PM


Re: Strong Evidence of Humans in N. America 21K-23K Years Ago
AZPaul3 in Message 365 writes:
Less than 10,000 year difference between old and new data. Significant difference but this seems hyperbole. What controversy?
Well, in the Americas the evidence indicates that humans only arrived relatively recently, compared to evidence that humans and human ancestors have been present in Europe and Asia for hundreds of thousands of years and millions of years in Africa, so evidence supporting humans in the Americas up to eight thousand years earlier is significant.
I personally thought it was interesting because I have watched the rejection of multiple dating tests (over the pat 30-40 years) that indicated earlier than expected human presence at multiple sites. These rejections have seemed to me to be motivated by dogmatic protection of cherished hypotheses rather than encouraging good scientific scholarship.
Now obviously, this finding and dating doesn't tell us how much earlier the ancestors of these people actually got to the Americas or whether these people were part of the cultures that survived and spread throughout the New World.
I just think this story (humans colonizing the Americas) is fascinating and I wonder what Coyote's opinion would be.

Stop Tzar Vladimir the Condemned!
What if Eleanor Roosevelt had wings? -- Monty Python
One important characteristic of a theory is that it has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie
If evolution is shown to be false, it will be at the hands of things that are true, not made up. --Percy
The reason that we have the scientific method is because common sense isn't reliable. -- Taq

This message is a reply to:
 Message 365 by AZPaul3, posted 10-06-2023 9:37 PM AZPaul3 has not replied

  
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