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How to Finally Stop Buying the Wrong Lightbulbs

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If you’re of a certain vintage (i.e., old), you know that buying lightbulbs used to be a relatively simple process: You noted the wattage that you needed and you bought more of the same. A 40-watt bulb produced dimmer light than a 100-watt bulb. Easy! Sure, there were always more exotic bulbs out there—halogen bulbs for that weird floor lamp you accidentally bought after college graduation, those tiny bulbs inside the kitchen appliances you swore you would replace for years before finally simply replacing the appliance itself because it was easier—but for the basic task of lighting the rooms in your house, it was a pretty simple process.

Today, things are much more complicated. As usual, this is because technology has advanced. Not only are lightbulbs more energy-efficient and long-lasting, but they also offer a wider range of brightness, warmth, and aesthetics. This has made it possible to fine-tune the lighting in your home, but that also means buying lightbulbs has become a pretty fraught activity. Even the lightbulb section in your local supermarket is now crowded with what seem like exotic choices, and the old-fashioned watt system is no longer as meaningful as it was.

The good news? It’s still a pretty simple process to choose the right bulb for the right purpose. Here’s all you need to know to understand modern light bulbs.

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Photo: l i g h t p o e t (Shutterstock)

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Click the link below for the article:

https://lifehacker.com/how-to-finally-stop-buying-the-wrong-lightbulbs-1848842555?utm_source=pocket_discover

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A new vision of artificial intelligence for the people

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In the backroom of an old and graying building in the northernmost region of New Zealand, one of the most advanced computers for artificial intelligence is helping to redefine the technology’s future.

Te Hiku Media, a nonprofit Māori radio station run by life partners Peter-Lucas Jones and Keoni Mahelona, bought the machine at a 50% discount to train its own algorithms for natural-language processing. It’s now a central part of the pair’s dream to revitalize the Māori language while keeping control of their community’s data.

Mahelona, a native Hawaiian who settled in New Zealand after falling in love with the country, chuckles at the irony of the situation. “The computer is just sitting on a rack in Kaitaia, of all places—a derelict rural town with high poverty and a large Indigenous population. I guess we’re a bit under the radar,” he says.

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Peter-Lucas Jones (left) and Keoni Mahelona (right) attend an Indigenous AI workshop in 2019.  COURTESY PHOTO

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Click the link below for the article:

https://www.technologyreview.com/2022/04/22/1050394/artificial-intelligence-for-the-people?utm_source=pocket_discover

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Missed News 872

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Murder charge over self-induced abortion dismissed in Texas How many women really died from illegal abortion prior to Roe v. Wade?
US Supreme Court investigates its abortion ruling leak A maternal death from self-induced medical abortion: a call for action
Your Daily AM Roundup Coronavirus Daily Briefing
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Colombia

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Colombia, officially the Republic of Colombia, is a transcontinental country spanning South America and an insular region in North America. It is bordered by the Caribbean Sea to the north, Venezuela to the east, Brazil to the southeast, Ecuador and Peru to the south, the Pacific Ocean to the west, and Panama to the northwest. Colombia comprises 32 departments and the Capital District of Bogotá, the country’s largest city. It covers an area of 1,141,748 square kilometers (440,831 sq mi), with a population of 50 million. Colombia’s rich cultural heritage reflects influences by various Amerindian civilizations, European settlement, African slaves, and immigration from Europe and the Middle East. Spanish is the nation’s official language, besides which over 70 languages are spoken.

Colombia has been inhabited by various indigenous peoples since at least 12,000 BCE, including the Muisca, Quimbaya, and the Tairona. The Spanish landed first in La Guajira in 1499 and by the mid-16th century colonized parts of the region, establishing the New Kingdom of Granada, with Santa Fé de Bogotá as its capital. Independence from the Spanish Empire was achieved in 1819, with what is now Colombia emerging as the United Provinces of New Granada. The new nation experimented with federalism as the Granadine Confederation (1858), and then the United States of Colombia (1863), before the Republic of Colombia was finally declared in 1886. Panama seceded in 1903, leading to Colombia’s present borders. Beginning in the 1960s, the country has suffered from an asymmetric low-intensity armed conflict and political violence, both of which escalated in the 1990s. Since 2005, there has been significant improvement in security, stability, and rule of law, as well as unprecedented economic growth and development.

Colombia is one of the world’s seventeen megadiverse countries and has the second-highest level of biodiversity in the world. Its territory encompasses Amazon rainforest, highlands, grasslands, and deserts, and it is the only country in South America with coastlines and islands along both Atlantic and Pacific oceans.

Colombia is a member of major global and regional organizations including the United Nations, the WTO, the OECD, the OAS, the Pacific Alliance, the Andean Community, and a NATO Global Partner. Its diversified economy is the third-largest in South America, with macroeconomic stability and favorable long-term growth prospects.

The name “Colombia” is derived from the last name of the Italian navigator Christopher Columbus (Italian: Cristoforo Colombo, Spanish: Cristóbal Colón). It was conceived as a reference to all of the New World. The name was later adopted by the Republic of Colombia of 1819, formed from the territories of the old Viceroyalty of New Granada (modern-day Colombia, Panama, Venezuela, Ecuador, and northwest Brazil).

When Venezuela, Ecuador, and Cundinamarca came to exist as independent states, the former Department of Cundinamarca adopted the name “Republic of New Granada”. New Granada officially changed its name in 1858 to the Granadine Confederation. In 1863 the name was again changed, this time to United States of Colombia, before finally adopting its present name – the Republic of Colombia – in 1886.

To refer to this country, the Colombian government uses the terms Colombia and República de Colombia. Wikipedia

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An image of Cartagena Colombia

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Colombia – Bing images

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Quantum Steampunk: A new frontier in quantum physics

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Quantum physicist Nicole Yunger Halpern just published her first book, Quantum Steampunk: The physics of yesterday’s tomorrow. I have known Nicole since she was an undergraduate at Dartmouth, where she graduated as valedictorian in 2011. From there, her career has been nothing short of meteoric. She earned a Ph.D. from the California Institute of Technology and received several research appointments at Harvard and at the University of Maryland. She now works at the Laser Cooling and Trapping Group of the National Institute of Standards and Technology, also at Maryland. In this week’s column, she joins me for an interview.

What has always impressed me about Nicole, apart from her extraordinarily sharp mind, was her intellectual openness — in particular, her interest in the philosophy and history of physics. There was a time when I thought, as we discussed her future career path, that she would go into the humanities. Wisely, Nicole chose the path of research. She joined the emerging field of quantum information, and from there, she has charted her own, new direction. 

Quantum steampunk is a blend of quantum information and thermodynamics. It promises to revolutionize our understanding of machines and the future of technology. As a bonus, it may provide new insights into some of the hardest questions in physics, such as the arrow of time, or why we can’t remember the future.

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quantum steampunkCredit: rolffimages / Adobe Stock

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Click the link below for article:

https://bigthink.com/13-8/quantum-steampunk/

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How QR Codes Work and What Makes Them Dangerous—a Computer Scientist Explains

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Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that can be printed and later scanned by a smartphone or other device.

QR codes have a wide range of uses that help people avoid contact with objects and close interactions with other people, including for sharing restaurant menus, email list sign-ups, car, and home sales information, and checking in and out of medical and professional appointments.

QR codes are a close cousin of the bar codes on product packaging that cashiers scan with infrared scanners to let the checkout computer know what products are being purchased.

Bar codes store information along one axis, horizontally. QR codes store information in both vertical and horizontal axes, which allows them to hold significantly more data. That extra amount of data is what makes QR codes so versatile.

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person scanning a code with their phoneQR codes are visual patterns that store data smartphones can read. AP Photo/Vincent Yu

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Click the link below for the article:

https://getpocket.com/explore/item/how-qr-codes-work-and-what-makes-them-dangerous-a-computer-scientist-explains?utm_source=pocket_discover

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Missed News 871

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NEWS NEWS
Judge rejects Trump bid to remove $10K daily fine in N.Y. attorney general probe How Tucker Carlson Reshaped Fox News — and Became Trump’s Heir
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U.S. Black farmers lost $326 billion worth of land in 20th century St. Louis man who murdered De Soto couple to be executed Tuesday
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Coronavirus Daily Briefing Your Daily AM Roundup
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Ask Ethan: Could “heavy light” be the missing dark matter?

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When it comes to the Universe, there are some things we can be confident are out there based on what we observe. We know that the Universe was hotter, denser, and more uniform in the distant past. We know that the stars and galaxies in the Universe have grown up and evolved as the Universe has aged. We know that gravitation has formed the large-scale structure in the Universe, and that structure has grown more complex over time. And we also know how much normal matter, altogether, is present in the Universe, and that it isn’t sufficient to explain the full suite of the gravitational effects that we see on its own.

So if the normal matter can’t be all that there is, what else can there be? The leading idea is dark matter, but we don’t know precisely what it is. What if it’s just light? Is that possible? That’s what Enon Travis Sci wants to know, asking:

“I’d love to read an article on why light isn’t a dark matter candidate, especially in light (pun intended) of the recent articles about the 50% excess in ambient light in the universe, and the known phenomena of apparent mass photons can have on spacetime…”

It’s a completely reasonable idea to consider. Let’s take a look inside.

First off, there really is an excess in the ambient light we see in the Universe. In fact, I myself wrote about it back in 2020, because it’s one of the most intriguing things that the New Horizons spacecraft was able to measure from its unique location: out beyond the orbit of Pluto. Among all fully functioning spacecrafts, only New Horizons is distant enough to be immune to the tiny, light-reflecting dust grains that exist all throughout our Solar System, and see what sort of light still remains.

Is deep space entirely dark?

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cosmic rays(Credit: IceCube collaboration/NASA)  In this artistic rendering, a blazar is accelerating protons that produce pions, which produce neutrinos and gamma rays. Lower-energy photons are also produced. We believe this object, like all galaxies and larger ones, is surrounded by a dark matter halo. But what is that halo composed of, and could heavy photons be an option?

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Click the link below for the article:

https://bigthink.com/starts-with-a-bang/heavy-light-dark-matter/

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What Is a Neutrino? The Missing Key to Modern Physics Could Be a Ghost Particle

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It came from deep space, moving at the speed of light, and crashed into Antarctica. Deep below the ice, it met its end. It wasn’t an asteroid or alien spacecraft, but a particle that rarely interacts with matter, known as a neutrino.  

Though theorized in the 1930s and first detected in the 1950s, neutrinos maintain a mysterious aura, and are often dubbed “ghost particles” — they’re not haunting or dangerous, but they just zip through the Earth without us even noticing them. Oh, “and it’s a cool name,” according to astrophysicist Clancy James at Curtin University in Western Australia.

In recent years, ghost particles have been making headlines for all sorts of reasons and not just because they have a cool name. That Antarctic collision was traced to a black hole that shredded a star, for instance, and other neutrinos seem to come via the sun. In early 2022, physicists were able to directly pin down the approximate mass of a neutrino — a discovery that could help uncover new physics or break the rules of the Standard Model. 

Imagine if we actually captured a ghost and could say the specter was of someone who had died. It would change everything we know about the universe. A ghost particle is pretty much a big deal for the same reason, and that’s why astrophysicists are trying to trap them. They’re excited, and here’s why you should be, too.

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The detection chamber, full of spherical balls, of the Super-Kamiokande neutrino experiment in Japan

The detection chamber of the Super-Kamiokande neutrino experiment in Japan  Kamioka Observatory/ICRR (Institute for Cosmic Ray Research)/The University of Tokyo

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Click the link below for the article:

https://www.cnet.com/science/space/features/what-is-a-neutrino-the-missing-key-to-modern-physics-could-be-a-ghost-particle/?utm_source=pocket_discover

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Alaska Peninsula Big Brown Bear

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The Alaska Peninsula brown bear or “peninsular grizzly” is a colloquial nomenclature for a brown bear that lives in the coastal regions of southern Alaska, although according to other sources, it is a population of the mainland grizzly bear subspecies (Ursus arctos horribilis), or the Kodiak bear subspecies (U. a. middendorffi).

Alaska Peninsula brown bears are very large, usually ranging in weight from 800 to 1,200 lb (360 to 540 kg). They are found in high densities along the southern Alaskan coast due not only to the large amount of clams and sedge grass but also to the annual salmon runs; this allows them to attain huge sizes, some of the biggest in the world. They may gather in large numbers at feeding sites, such as Brooks Falls and McNeil Falls, both in Katmai National Park near King Salmon. Biologists maintain that coastal ones are truly brown bears. However, it is considered correct to place all North American members of U. arctos in the subspecies horribilis except the giant Kodiak bears of Kodiak Island. To avoid confusion, many simply refer to all North American members, including Kodiaks, as “brown bears.”

Prized by hunters for their skulls and hides, up to 500 of Alaska’s 1,500 brown bears killed yearly by hunters come from the Alaska Peninsula. To hunt this large bear, hunters must follow a variety of regulations, including bear bag limits, hunting fees, and proper rifles.

The Alaska Peninsula brown bear’s name most likely arose because, until 1975, it was considered a different species from the inland grizzly bear. It was never considered closer to European brown bears than inland grizzlies but was given a different name, due to the size and color differences of coastal browns and inland grizzlies. From 1975 onward, it was considered to be the same species, but coastal ones retained the name “brown bear.” When mentioning Brown bears or Grizzly bears, they are the same animal living in different areas. Coastal bears tend to be larger because of a diet high in salmon. The total number of Brown bears in the U.S. is estimated at 32,000 with approximately 95% (30,400) living in Alaska. Around 4000 of these are coastal bears. Alaska Peninsula brown bears are among the largest types of brown bear in the world. They usually measure 8 ft (2.4 m) in length, usually have a shoulder height of about 4 to 4 1/2ft or 1.22 to 1.37 meters (137 cm), and a hindfoot length of 11 in (28 cm). One study found that the average weight for a coastal male was around 408 kg (899 lb), and 227 kilograms (500 pounds) for a female. On the other hand, an occasional huge male brown has been recorded which greatly exceeds ordinary size, with weights reported up to 680 kg (1,500 lb). A large coastal male of this size may stand up to 3 meters (9.8 ft) tall on its hind legs, and be up to 1.5 meters (4.9 ft) at the shoulder. The biggest individual on record was shot in 1948 near Cold Bay. Its weight was estimated at 725 to 771 kg (1,598 to 1,700 lb). This bear just came out of hibernation and carried little or no fat; that means the animal would have weighed around 839 kg (1,850 lb) at the end of the summer. Although variable from blonde to nearly black, grizzly bear fur is typically brown in color with white tips. A pronounced hump appears on their shoulders; the hump is a good way to distinguish a black bear from a grizzly bear, as black bears do not have this hump. Wikipedia

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An image of an Alaska Peninsula Big Brown Bear

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Click the link below for images:

https://www.bing.com/images/search?q=Alaska+peninsula+Big+brown+bear&form=HDRSC2&first=1&tsc=ImageBasicHover

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