December 14, 2021
Mohenjo
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The Universe’s normal matter consists, humbly, of atoms.
Every atom’s nucleus contains protons, whose number determines that element’s properties.
Over 100 elements, sortable into a periodic table, are presently known.
Only eight processes occur to create them all.
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The Universe itself, through a variety of nuclear processes involving stars and stellar remnants, as well as other means, can naturally copiously produce nearly 100 elements of the periodic table. There are only 8 total processes, both natural and human-made, that cause them all. (Credit: ESO/L. Calçada/M. Kornmesser)
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December 13, 2021
Mohenjo
Business, Enthralling, Human Interest, Photographs
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Central Kalahari Game Reserve is an extensive national park in the Kalahari Desert of Botswana. Established in 1961 it covers an area of 52,800 square kilometers (20,400 sq mi) (larger than the Netherlands, and almost 10% of Botswana’s total land area), making it the second-largest game reserve in the world.
The Bushmen, or San, have inhabited the lands for thousands of years since they roamed the area as nomadic hunters. However, since the mid-1990s the Botswana government has tried to relocate the Bushmen from the reserve, claiming they were a drain on financial resources despite revenues from tourism. In 1997, three-quarters of the entire San population were relocated from the reserve, and in October 2005 the government had resumed the forced relocation into resettlement camps outside of the park leaving only about 250 permanent occupiers. In 2006 a Botswana court proclaimed the eviction illegal and affirmed the Bushmen’s right to return to living in the reserve. However, as of 2015 most Bushmen are blocked from access to their traditional lands in the reserve. A nationwide ban on hunting made it illegal for the Bushmen to practice their traditional hunter-gatherer lifestyle, despite allowing private game ranches to provide hunting opportunities for tourists.
In 2014 a diamond mine called Ghaghoo operated by Gem Diamonds opened in the southeast portion of the reserve. The company estimated that the mine could yield $4.9 billion worth of diamonds. The Rapaport Diamond Report, a diamond-industry pricing guide, stated, “Ghaghoo’s launch was not without controversy […] given its location on the ancestral land of the Bushmen”.
A huge bush fire in and around the park in the middle of September 2008 burnt around 80 percent of the reserve. The origin of the fire remains unknown.
This park contains wildlife such as giraffe, elephant, white rhinoceros, Cape buffalo, spotted hyena, brown hyena, honey badger, meerkat, yellow mongoose, warthog, cheetah, caracal, Cape wild dog, black-backed jackal, bat-eared fox, cape fox, leopard, lion, wildebeest, zebra, eland, sable antelope, gemsbok, springbok, steenbok, impala, greater kudu, aardvark, cape ground squirrel, cape hare, cape porcupine, chacma baboon, red hartebeest, and ostrich. The land is mostly flat, and gently undulating covered with bush and grasses covering the sand dunes, and areas of larger trees. Many of the river valleys are fossilized with salt pans. Four fossilized rivers meander through the reserve including Deception Valley which began to form around 16,000 years ago. Wikipedia
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An image from Central Kalahari Game Reserve
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December 13, 2021
Mohenjo
Business, Food For Thought, Human Interest, Science, Technical
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PARTICLES that also act like waves; the “spooky action at a distance” of entanglement; those dead-and-alive cats. Small wonder people often trot out physicist Richard Feynman’s line that “nobody understands quantum mechanics”. With quantum theory, we have developed an exceedingly successful description of how fundamental reality works. It also amounts to a full-frontal assault on our intuitions about how reality should work.
Or does it? “It only seems strange to us because our immediate everyday experience of the world is so very limited,” says Sean Carroll at the California Institute of Technology. Intuitive-feeling classical physics is largely devoted to describing macroscopic objects – the things we see and feel directly in the world around us. “It should not be surprising that this breaks down when we push it into domains that we never experience directly,” says Carroll.
There is a big difference between seeming strange and being strange, too. “If quantum mechanics is right, it can’t truly be strange – it’s how nature works,” says Carroll. You can say something similar, after all, about other areas of physics, such as Albert Einstein’s space-and-time-warping theories of relativity. Their effects only truly kick in at close to light speed, or in humongous gravitational fields of the sort, we never experience, so their picture of the world seems alien to us.
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December 13, 2021
Mohenjo
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Are you in the market for a loophole in the laws that forbid perpetual motion? Knowing you’ve got yourself an authentic time crystal takes more than a keen eye for high-quality gems.
In a new study, an international team of researchers used Google’s Sycamore quantum computing hardware to double-check their theoretical vision of a time crystal, confirming it ticks all of the right boxes for an emerging form of technology we’re still getting our head around.
Similar to conventional crystals made of endlessly repeating units of atoms, a time crystal is an infinitely repeating change in a system, one that remarkably doesn’t require energy to enter or leave.
Though such a thing comes close to breaking certain laws of thermodynamics, the fact that the system’s entropy doesn’t increase means it should sit on the right side of physics.
In reality, such a crystal might look like an oscillation of some sort that doesn’t synchronize with the rest of the system’s rhythms. A laser tapping out a steady beat on your time crystal, for example, might make its particles’ spins flip only on every other tap.
This recalcitrant flip-flopping is a signature time crystal behavior and has been used as evidence for the design and production of time crystals in past experiments.
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The chip used in the creation of a time crystal. (Google Quantum AI)
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December 12, 2021
Mohenjo
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The new theory contradicts earlier predictions that these ‘shortcuts’ would instantly collapse.
Wormholes, or portals between black holes, maybe stable after all, a wild new theory suggests.
The findings contradict earlier predictions that these hypothetical shortcuts through space-time would instantly collapse.
The sea change comes because tiny differences in the mathematics of relativity, which is used to describe such wormholes, end up dramatically changing our overall picture of how they behave.
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An artist’s impression of the inside of a wormhole. (Image credit: Shutterstock)
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December 12, 2021
Mohenjo
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On July 9th, 1968, eight white mice were placed into a strange box at the National Institute of Health in Bethesda, Maryland. Maybe “box” isn’t the right word for it; the space was more like a room, known as Universe 25, about the size of a small storage unit. The mice themselves were bright and healthy, hand-picked from the institute’s breeding stock. They were given the run of the place, which had everything they might need: food, water, climate control, hundreds of nesting boxes to choose from, and a lush floor of shredded paper and ground corn cob.
This is a far cry from a wild mouse’s life—no cats, no traps, no long winters. It’s even better than your average lab mouse’s, which is constantly interrupted by white-coated humans with scalpels or syringes. The residents of Universe 25 were mostly left alone, save for one man who would peer at them from above, and his team of similarly interested assistants. They must have thought they were the luckiest mice in the world. They couldn’t have known the truth: that within a few years, they and their descendants would all be dead.
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Calhoun inside Universe 25, his biggest, baddest mouse utopia. Photo: Yoichi R. Okamoto/Public Domain .
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December 11, 2021
Mohenjo
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Torres del Paine National Park is a national park encompassing mountains, glaciers, lakes, and rivers in southern Chilean Patagonia. The Cordillera del Paine is the centerpiece of the park. It lies in a transition area between the Magellanic subpolar forests and the Patagonian Steppes. The park is located 112 km (70 mi) north of Puerto Natales and 312 km (194 mi) north of Punta Arenas. The park borders Bernardo O’Higgins National Park to the west and the Los Glaciares National Park to the north in Argentine territory. Paine means “blue” in the native Tehuelche (Aonikenk) language and is pronounced PIE-nay, while Torres means “towers”.
Torres del Paine National Park is part of the Sistema Nacional de Áreas Silvestres Protegidas del Estado de Chile (National System of Protected Forested Areas of Chile). In 2013, it measured approximately 181,414 hectares (700 sq mi). It is one of the largest and most visited parks in Chile. The park averages around 252,000 visitors a year, of which 54% are foreign tourists, who come from many countries all over the world. It is also part of the End of the World Route, a tourist scenic route.
The park is one of the 11 protected areas of the Magallanes Region and Chilean Antarctica (together with four national parks, three national reserves, and three national monuments). Together, the protected forested areas comprise about 51% of the land of the region (6,728,744 hectares (25,980 sq mi)).
The Torres del Paine are the distinctive three granite peaks of the Paine mountain range or Paine Massif. From left to right they are known as Torres d’Agostini, Torres Central and Torres Monzino. They extend up to 2,500 meters (8,200 ft) above sea level and are joined by the Cuernos del Paine. The area also boasts valleys, rivers such as the Paine, lakes, and glaciers. The well-known lakes include Grey, Pehoé, Nordenskiöld, and Sarmiento. The glaciers, including Grey, Pingo, and Tyndall, belong to the Southern Patagonia Ice Field.
Lady Florence Dixie, in her book published in 1880, gave one of the first descriptions of the area and referred to the three towers as Cleopatra’s Needles. She and her party are sometimes credited as being the first “foreign tourists” to visit the area that is now called Torres del Paine National Park. Wikipedia
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An image from Torres Del Paine National Park
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December 11, 2021
Mohenjo
Business, Food For Thought, Human Interest, Science, Technical
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Think your area has had more rain than usual? You’re probably right.
Think your area has had less rain than usual? Again, you’re probably right.
For our climate change investigation out this week, called Downpour, USA TODAY reporters used 126 years of monthly data from the National Oceanic and Atmospheric Administration to analyze average annual precipitation at 344 climate divisions. They used daily precipitation data from weather stations to measure the change in frequency of extreme rain events across the U.S. from 1951-2020.
“We were hearing a lot about extreme rainfall, stories of flooding, people with sewer backups, people flooded out of their homes, and we wanted to know, is this happening everywhere?” said Dinah Pulver, one of the project’s lead reporters. “How many people, how many places, are contending with this kind of rainfall?
We found more than half of the nation’s 344 climate divisions had their wettest periods on record since 2018. We calculated the same rolling averages for states.
“East of the Rockies, more rain is falling, and it’s coming in more intense bursts,” our report finds. “In the West, people are waiting longer to see any rain at all.
“Taken together, the reporting reveals a stunning shift in the way precipitation falls in America.”
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December 11, 2021
Mohenjo
Business, Food For Thought, Human Interest, Political, Science, Technical
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On a cold, dry Tuesday in December 1940, Rita Levi-Montalcini rode a train from the station near her home in Turin, Italy, for 80 miles to Milan to buy a microscope. Milan had not seen bombings for months. On her return to the Turin train station, two police officers stopped her and demanded to see inside the cake-sized box that she was carrying. With wartime food rationing, panettone cakes were only available illegally. The officers found her new microscope instead. They let her go. Just a week after her trip, British bombers hit Milan.
Levi-Montalcini was a 31-year-old scientist who had been working at the University of Turin. Despite her father’s disapproval, she had trained in medicine, inspired by seeing a nanny succumb to cancer. In 1938, the Italian dictator Mussolini banned Jews from positions in universities. Levi-Montalcini was not raised in the Jewish religion, but her Jewish ancestry would have been evident from her surname. Mussolini’s ban had pushed Levi-Montalcini to leave Italy for Belgium in 1939, where she did research using fertilized chicken eggs as a source of material for her research topic: the developing nervous systems of vertebrate embryos. Levi-Montalcini also spent time with her older sister Nina, whose family was in Belgium as well. Rita wrote home to her mother of an “infinite desire to embrace you again,” but research at the university in Turin would have been impossible had she returned home. Her passion for research alternated with her frustration with challenges. When Hitler invaded Poland in September, launching war, her worst frustrations were realized. The “whole world was in danger,” Levi-Montalcini later wrote. In December 1939, she returned to Italy.
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December 10, 2021
Mohenjo
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Lafayette is a city in and the county seat of Tippecanoe County, Indiana, United States, located 63 miles (101 km) northwest of Indianapolis and 125 miles (201 km) southeast of Chicago. West Lafayette, on the other side of the Wabash River, is home to Purdue University, which contributes significantly to both communities. Together, Lafayette and West Lafayette form the core of the Lafayette, Indiana Metropolitan Statistical Area.
According to the 2010 United States Census, the population of Lafayette was 67,140, a 19% increase from 56,397 in 2000. Meanwhile, the 2010 Census pegged the year-round (excluding Purdue University students) population of West Lafayette at 29,596 and the Tippecanoe County population at 172,780.
Lafayette was founded in 1825 on the southeast bank of the Wabash River near where the river becomes impassable for riverboats upstream, though a French fort and trading post had existed since 1717 on the opposite bank and three miles downstream. It was named for the French general Marquis de Lafayette, a revolutionary war hero.
When European explorers arrived at this area, it was inhabited by a tribe of Miami Indians known as the Ouiatenon or Weas. In 1717, the French government established Fort Ouiatenon across the Wabash River and three miles (5 km) south of present-day Lafayette. The fort became the center of trade for fur trappers, merchants, and Indians. An annual reenactment and festival known as Feast of the Hunters’ Moon is held there each autumn.
The town of Lafayette was platted in May 1825 by William Digby, a trader. It was designated as the county seat of the newly formed Tippecanoe County the following year. Like many frontier towns, Lafayette was named for General Lafayette, a French officer who significantly aided George Washington’s Continental Army during the American Revolutionary War. Lafayette toured the United States in 1824 and 1825.
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