Vintage Wings of Canada is a not-for-profit, charitable organization with a collection of historically significant aircraft and is run entirely by volunteers. It is our mission to acquire, restore, maintain and fly classic aircraft significant to the early history of powered flight in Canada, focussing largely on the aircraft of the Second World War. We run education and flying programs with our own aircraft and in concert with the aircraft collection of our founder, Michael Potter. It is our goal to inspire and educate future generations about the historical significance of our aviation heritage and to demonstrate that these aircraft are more than just metal, fabric, and wood artifacts. We seek to keep the souls of these aircraft alive through the thundering sound of engines, the smell of leather, glycol, oil and sweat, as well as the laughter of their pilots as they dance with them in their natural element in the skies over Canada.
"AI solutions that are almost right, but not quite" lead to more debugging work.
The feathers can emit two frequencies of laser light from multiple regions across their colored eyespots. //
Peacock feathers are greatly admired for their bright iridescent colors, but it turns out they can also emit laser light when dyed multiple times, according to a paper published in the journal Scientific Reports. Per the authors, it's the first example of a biolaser cavity within the animal kingdom.
As previously reported, the bright iridescent colors in things like peacock feathers and butterfly wings don't come from any pigment molecules but from how they are structured. The scales of chitin (a polysaccharide common to insects) in butterfly wings, for example, are arranged like roof tiles. Essentially, they form a diffraction grating, except photonic crystals only produce certain colors, or wavelengths, of light, while a diffraction grating will produce the entire spectrum, much like a prism.
Both are naturally occurring examples of what physicists call photonic crystals. Also known as photonic bandgap materials, photonic crystals are "tunable," which means they are precisely ordered in such a way as to block certain wavelengths of light while letting others through. Alter the structure by changing the size of the tiles, and the crystals become sensitive to a different wavelength. (In fact, the rainbow weevil can control both the size of its scales and how much chitin is used to fine-tune those colors as needed.).
Even better (from an applications standpoint), the perception of color doesn't depend on the viewing angle. //
quackmeister Wise, Aged Ars Veteran
8y
162
If this didn't already appear in a scene from the Incredibles set in the villain's palatial gardens, it should have. //
Chuckstar Ars Legatus Legionis
22y
35,919
Gives me an opportunity to link to my favorite video of a wild peacock in action. In case anyone wondered if the peacock's tail really acted as a proxy that the individual had to be fit enough to simply survive carrying such a thing around (if the embedded time stamp doesn't work, the action starts at 1:15):
U.S. — President Trump has reportedly finalized a new trade deal with the United Kingdom, securing a 15% tariff on the extra "U" in British words.
"I guess you could say this is my favourite trade deal," Trump said, explicitly using the British form of favorite. "And England's shown a lot of honour, a lot of honour. Colour me impressed."
According to sources, the U.S. will now collect a fee every time someone uses a word with an unnecessary "U" in it. This is expected to have vast repercussions across the globe, taking the focus from British English and placing it on American English where it belongs.
aptX HD is a variant of the aptX codec, designed specifically for high-definition audio. It supports 24-bit/48 kHz audio transmission, with a maximum bitrate of 576 kbps. While not truly lossless, aptX HD offers a significant improvement over standard SBC, with a more detailed and nuanced sound.
LDAC, on the other hand, is a proprietary codec developed by Sony. It supports 24-bit/96 kHz audio transmission, with a maximum bitrate of 990 kbps. LDAC is designed to provide a more accurate and detailed sound, with a focus on preserving the dynamic range and frequency response of the original audio signal.
Both aptX HD and LDAC offer a superior listening experience compared to standard SBC, but they still don’t quite match the quality of wired connections or true lossless audio transmissions.
If it seems like there's a satellite launch almost every day, the numbers will back you up.
The US Space Force's Mission Delta 2 is a unit that reports to Space Operations Command, with the job of sorting out the nearly 50,000 trackable objects humans have launched into orbit.
Dozens of satellites are being launched each week, primarily by SpaceX to continue deploying the Starlink broadband network. The US military has advance notice of these launches—most of them originate from Space Force property—and knows exactly where they're going and what they're doing.
That's usually not the case when China or Russia (and occasionally Iran or North Korea) launches something into orbit. With rare exceptions, like human spaceflight missions, Chinese and Russian officials don't publish any specifics about what their rockets are carrying or what altitude they're going to.
That creates a problem for military operators tasked with monitoring traffic in orbit and breeds anxiety among US forces responsible for making sure potential adversaries don't gain an edge in space. Will this launch deploy something that can destroy or disable a US satellite? Will this new satellite have a new capability to surveil allied forces on the ground or at sea?
Award-winning photo editing, graphic design and page layout software for Mac, Windows & iPad. ///
alternative to PhotoShop & Adobe InDesign
WebSDR is a Software-Defined Radio receiver connected to the internet, allowing many listeners to listen and tune it simultaneously. SDR technology makes it possible that all listeners tune independently, and thus listen to different signals; this is in contrast to the many classical receivers that are already available via the internet.
This is a story about an accidental activist. Bill Browder started out his adult life as the Wall Street maverick whose instincts led him to Russia just after the breakup of the Soviet Union, where he made his fortune.
Along the way he exposed corruption, and when he did, he barely escaped with his life. His Russian lawyer Sergei Magnitsky wasn’t so lucky: he ended up in jail, where he was tortured to death. That changed Browder forever. He saw the murderous heart of the Putin regime and has spent the last half decade on a campaign to expose it. Because of that, he became Putin’s number one enemy, especially after Browder succeeded in having a law passed in the United States—The Magnitsky Act—that punishes a list of Russians implicated in the lawyer’s murder. Putin famously retaliated with a law that bans Americans from adopting Russian orphans.
A financial caper, a crime thriller, and a political crusade, Red Notice is the story of one man taking on overpowering odds to change the world, and also the story of how, without intending to, he found meaning in his life.
A RACI chart (RACI matrix) clarifies roles and responsibilities, making sure that nothing falls through the cracks. RACI charts also prevent confusion by assigning clear ownership for tasks and decisions.
RACI charting is easy (here’s the Excel file for the one below).
- RACI is a project management acronym for the different responsibility types within a project: Responsible, Accountable, Consulted, and Informed.
- The RACI matrix, or RACI chart, clarifies the roles named individuals or groups will play in the successful delivery of the project.
- Accurate RACI matrices help ensure a project’s success before it even begins.
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Lukas (computer) @SCHIZO_FREQ
Biggest "the kids are f**d" moment I've had recently was buying a car
Walked into the dealership, told them what I wanted and said I'd pay up-front. Expected them to be thrilled
Instead they were horrified. Spent the next 20 minutes trying to get me to finance it at some absurd rate
Got me curious so after I left I read about car sale profit models. Apparently most US dealerships make more financing now than from the cars themselves
I was such a boomer I assumed they'd want CASH
In reality they want your ETERNAL SLAVERY at 19% APR
Sage @SoulSageSay
This experience shows how deeply the system is rigged against true ownership.
It’s not about providing value anymore.. it’s about creating life-long customers chained to debt.
Paying in full should be a sign of strength.
But in a world built on credit addiction, it makes you a threat.
Financial institutions don’t profit when you’re free.
They profit when you’re trapped in “manageable” monthly payments for life.
This isn’t just about cars.
It’s about a culture that normalizes living beyond your means and calls it success.
It’s about conditioning people to chase luxuries they never actually own.
True wealth is quiet.
It’s found in people who own their life .. not just rent their lifestyle.
Learn to think long-term.
Every contract you sign in desperation becomes a cage.
Choose freedom.
Every dollar you own outright is a vote against their system.
Stay smart. Stay sovereign.
Barely working servers are great for the test pool. More scenarios to test!
I’ve written a simple NTP simulator (probably not the only one out there) that lets you tweak things however you like:
The space plane will also advance the development of a new navigation technology based on electromagnetic wave interference. The Space Force news release characterizes this as the "highest-performing quantum inertial sensor ever tested in space."
Boeing has previously tested a quantum inertial measurement unit, which detects rotation and acceleration using atom interferometry, on conventional aircraft. Now, an advanced version of the technology is being taken to space to demonstrate its viability. The goal of the in-space test is to demonstrate precise positioning, navigation, and timing in an environment where GPS services are not available.
"Bottom line: testing this tech will be helpful for navigation in contested environments where GPS may be degraded or denied," Saltzman said in a social media post Monday, describing the flight.
Quantum inertial sensors could also be used near the Moon, where there is no comparable GPS capability, or for exploration further into the Solar System. //
Albino_Boo Ars Praefectus
7y
8,162
The reason why GPS is provide correction in drift on the laser ring gyros on Trident D5 boats. The key thing, which understandably isn't in the public domain, is the drift on quantum gyros. The other thing which I would be interested in is how they keep it cool enough for quantum effect to be in place. That must give the gyro in space a finite life because you can't top up the Helium. //
Lexus Lunar Lorry Ars Praetorian
7y
572
Subscriptor++
Quantum inertial sensors could also be used near the Moon, where there is no comparable GPS capability, or for exploration further into the Solar System.
One advantage of accurate inertial sensors is that they can be used underwater by submarines. This will be useful for our inevitable upcoming war with the Europan Fish People. There will be no GPS (or other satellite navigation or points of reference) under the mile-thick ice sheets. //
dmsilev Ars Tribunus Angusticlavius
15y
6,364
Subscriptor
wagnerrp said:
Well it needs to be a superfluid.... That means just letting the helium boil off isn't even an option.
Atom interferometry doesn't need conventional cryogenics. It uses laser cooling to trap and manipulate the atoms, so the essential requirements are very stable and precise lasers and other optics that are compatible with all the rigors of launch and spaceflight. At the proof-of-concept level, that's been done before; things like laser-cooled Bose-Einstein Condensates have been demoed on ISS, but obviously going from that to a high-precision navigation instrument entailed a lot of engineering development.
Here is Dan's whole X post from Saturday morning:
During my tenure here as the Deputy Director of the FBI, I have repeatedly relayed to you that things are happening that might not be immediately visible, but they are happening.
The Director and I are committed to stamping out public corruption and the political weaponization of both law enforcement and intelligence operations. It is a priority for us. But what I have learned in the course of our properly predicated and necessary investigations into these aforementioned matters, has shocked me down to my core. We cannot run a Republic like this. I’ll never be the same after learning what I’ve learned.
We are going to conduct these righteous and proper investigations by the book and in accordance with the law. We are going to get the answers WE ALL DESERVE. As with any investigation, I cannot predict where it will land, but I can promise you an honest and dignified effort at truth. Not “my truth,” or “your truth,” but THE TRUTH. God bless America, and all those who defend Her.
Barack Obama got enough electoral votes in the right places to become president in 2008. But the truth is, Americans didn’t really elect Barack Obama the man. They elected the idea of a well-educated black man, the first to govern in the nation's history.
Voters did not know that Obama, the man, is not really a good person. And, truth is, the 72-year-old Republican alternative that year wasn't all that exciting. //
Then, win or lose, former presidents usually go away. They served the purpose they were given and had carefully sought with intent, ambition, and other people’s money. They get overpaid to hire ghostwriters to create their memoirs. They construct a presidential library, give speeches, and never drive their own car again. //
Most ex-presidents depart the Swamp. Not Barack Obama, who was only 54 when he left office. Note to Self: Young ex-presidents tend to hang around. //
Barack and Michelle disregarded their own apocalyptic warnings about global warming. They bought two estates right on the ocean, one on Martha’s Vineyard and another in Hawaii.
But surprisingly, Obama also bought a D.C. mansion. And now we know why: He wasn’t done with his Swamp work, engineering “the radical transformation” of America that he had promised even before his first election.
Today, thanks to stunning revelations by the current Director of National Intelligence, we now know it was Obama and his henchmen embedded in the Deep State in 2016 who concocted and anonymously drove the malicious, fictitious Russiagate hoax in a receptive media. All in direct contradiction of the intelligence community's findings.
The goal was to paint Donald Trump as a perverted Putin puppet to undermine and cripple the Republican’s first administration that threatened Obama’s gains and Democrat power. //
The signs of Obama’s arrogant and malevolent side have been there all along. Sensing victory just before the 2008 election, the Democrat candidate addressed a Missouri crowd so enthused that it would have cheered an Obama burp:
We are five days away from fundamentally transforming the United States of America.
Such ambition was impressive. At the time, that D.C. rookie was not even halfway through his first and last Senate term, basically a political unknown nationally. But this single sentence of 13 words unveiled a scheme far beyond the plans of a standard incoming president. //
There were other signs of concern. During the 2008 campaign, Michelle Obama, a native of Chicago's South Side who got to go to Princeton and Harvard, declared:
For the first time in my adult life, I am really proud of my country.
She's still complaining.
You could be forgiven for thinking that using the bathroom is an activity so universal that the idiosyncrasies of travel do not apply. True, few of us have failed to ponder the celebrity-endorsed, one-of-a-kind toilets of Japan. And, sure, most of us understand on an almost instinctive level that some tourist cities have worse public restroom access than others. But when it comes down to the brass tacks of the issue, the restroom is a place of biological necessity, and the less said about what goes on within them, the better. //
Meanwhile, over in Italy, the rules surrounding basic bathroom use are as complex as they are delightfully eccentric. They can take you on a journey, for sure, such as attempts to decipher the peculiar signage or exploratory dives into the inner workings of exotic flushing mechanisms. Such things cannot be intuited; they must be learned. Here, then, is everything you need to know about bathrooms in the Italian peninsula.
Most Powerful Passports: Top 3 For 2025:
1-Singapore
2-Japan
2- South Korea
3-Denmark
3-Finalnd
3-France
3-Germany
3-Ireland
3-Italy
3-Spain
Visa-free and visa-on-arrival access gives Canadians the opportunity to visit several countries without needing a visa in advance. Canadians can travel to 152 countries without a visa.
The Internet Archive is now a federal depository library, meaning it can provide free access to bills, laws, regulations, presidential documents, studies, and other documents.
The Federal Depository Library Program (FDLP), run by the US Government Publishing Office (GPO), was established in 1813 to open up free access to official federal documents. Currently, there are 1,150 FDLs across all 50 states; all of them, except a few, are physical libraries.