Minuscule RoBeetle Turns Liquid Methanol Into Muscle Power

Evan Ackerman in Spectrum ieee:

It’s no secret that one of the most significant constraints on robots is power. Most robots need lots of it, and it has to come from somewhere, with that somewhere usually being a battery because there simply aren’t many other good options. Batteries, however, are famous for having poor energy density, and the smaller your robot is, the more of a problem this becomes. And the issue with batteries goes beyond the battery itself, but also carries over into all the other components that it takes to turn the stored energy into useful work, which again is a particular problem for small-scale robots.

In a paper published this week in Science Robotics, researchers from the University of Southern California, in Los Angeles, demonstrate RoBeetle, an 88-milligram four legged robot that runs entirely on methanol, a power-dense liquid fuel. Without any electronics at all, it uses an exceptionally clever bit of mechanical autonomy to convert methanol vapor directly into forward motion, one millimeter-long step at a time.

The body of RoBeetle is a boxy fuel tank that you can fill with methanol by poking a syringe through a fuel inlet hole. It’s a quadruped, more or less, with fixed hind legs and two front legs attached to a single transmission that moves them both at once in a sort of rocking forward and up followed by backward and down motion. The transmission is hooked up to a leaf spring that’s tensioned to always pull the legs backward, such that when the robot isn’t being actuated, the spring and transmission keep its front legs more or less vertical and allow the robot to stand. Those horns are primarily there to hold the leaf spring in place, but they’ve got little hooks that can carry stuff, too.

More here.



The Prophecies of Q

Adrienne LaFrance in The Atlantic:

Conspiracy theories are a constant in American history, and it is tempting to dismiss them as inconsequential. But as the 21st century has progressed, such a dismissal has begun to require willful blindness. I was a city-hall reporter for a local investigative-news site called Honolulu Civil Beat in 2011 when Donald Trump was laying the groundwork for a presidential run by publicly questioning whether Barack Obama had been born in Hawaii, as all facts and documents showed. Trump maintained that Obama had really been born in Africa, and therefore wasn’t a natural-born American—making him ineligible for the highest office. I remember the debate in our Honolulu newsroom: Should we even cover this “birther” madness? As it turned out, the allegations, based entirely on lies, captivated enough people to give Trump a launching pad.

Nine years later, as reports of a fearsome new virus suddenly emerged, and with Trump now president, a series of ideas began burbling in the QAnon community: that the coronavirus might not be real; that if it was, it had been created by the “deep state,” the star chamber of government officials and other elite figures who secretly run the world; that the hysteria surrounding the pandemic was part of a plot to hurt Trump’s reelection chances; and that media elites were cheering the death toll. Some of these ideas would make their way onto Fox News and into the president’s public utterances. As of late last year, according to The New York Times, Trump had retweeted accounts often focused on conspiracy theories, including those of QAnon, on at least 145 occasions.

The power of the internet was understood early on, but the full nature of that power—its ability to shatter any semblance of shared reality, undermining civil society and democratic governance in the process—was not. The internet also enabled unknown individuals to reach masses of people, at a scale Marshall McLuhan never dreamed of. The warping of shared reality leads a man with an AR-15 rifle to invade a pizza shop. It brings online forums into being where people colorfully imagine the assassination of a former secretary of state. It offers the promise of a Great Awakening, in which the elites will be routed and the truth will be revealed. It causes chat sites to come alive with commentary speculating that the coronavirus pandemic may be the moment QAnon has been waiting for. None of this could have been imagined as recently as the turn of the century.

More here.

Friday Poem

The Audience

The head of the protocol department asked
What are you involved in
We are tired I said
Alright, but what are you involved in
In ourselves
We said
We have been occupied
We would like to have a little rest

Are you involved in politics
Oh no
Our goal is freedom

The department head took note
And gave us a startled look

They look naive he said
As he came in to meet us
And desperate
They are Albanians
They come from a land of hatred
They want to be understood
They don’t insist on love

by Eqrem Basha
from
Poetry International Web

Thursday, August 20, 2020

Against the erosion of academic freedom by identity politics

Laurent Dubreuil in Harper’s Magazine:

In August 2017, a few weeks before the fall semester began at Cornell University, I received an email inviting me to participate in a campaign called “I’m First!” The idea was to encourage “faculty and staff on campus to identify themselves, via T-shirt or button, as the first in their family to graduate from a four-year institution.” The rationale for this themed costume party was the following: “This visual campaign will allow first-generation students to clearly identify (and connect with) faculty and professional staff that have had similar experiences as them!” Though I have been a tenured professor at Cornell for eleven years, neither of my parents, who are French, pursued post-secondary education. My father finished high school; my mother learned stenography at a vocational school and got her first job at sixteen. I guess this made me an ideal candidate to wear the nice T-shirt provided by the administration. But I declined. I’m not ashamed of my background, and I don’t underestimate the challenges students face when they are the first in their family to attend college. But the two occurrences of the verb “to identify” in one eight-line paragraph were clear hints that the I’m First! initiative—part of a national campaign—was pushing a new social identity: “first-gen.”

More here.

Computer Search Settles 90-Year-Old Math Problem

Kevin Hartnett in Quanta:

A team of mathematicians has finally finished off Keller’s conjecture, but not by working it out themselves. Instead, they taught a fleet of computers to do it for them.

Keller’s conjecture, posed 90 years ago by Ott-Heinrich Keller, is a problem about covering spaces with identical tiles. It asserts that if you cover a two-dimensional space with two-dimensional square tiles, at least two of the tiles must share an edge. It makes the same prediction for spaces of every dimension — that in covering, say, 12-dimensional space using 12-dimensional “square” tiles, you will end up with at least two tiles that abut each other exactly.

Over the years, mathematicians have chipped away at the conjecture, proving it true for some dimensions and false for others. As of this past fall the question remained unresolved only for seven-dimensional space.

But a new computer-generated proof has finally resolved the problem.

More here.

Why Tokyo’s New Transparent Public Restrooms Are A Stroke Of Genius

Suzanne Rowan Kelleher in Forbes:

At first, it’s hard to fathom how a public restroom with transparent walls could possibly help ease toilet anxiety — but a counterintuitive design by one of Japan’s most innovative architects aims to do just that.

Around the world, public toilets get a foul rap. Even in Japan, where restrooms have a higher standard of hygiene than in much of the rest of the world, residents harbor a fear that public toilets are dark, dirty, smelly and scary.

To cure the public’s phobia, the non-profit Nippon Foundation launched “The Tokyo Toilet Project,” tasking 16 well-known architects to renovate 17 public toilets located in the public parks of Shibuya, one of the busiest commercial areas of Tokyo.

More here.

Not in This Together

Laila Lalami in the Los Angeles Review of Books:

FEBRUARY WAS ONLY six months ago, but it belongs to a different era. Back then I still thought that, notwith-standing different private interests, moral values, and group allegiances, the United States could still function as a democratic society. I remember I was visiting Amherst College to take part in a public conversation with the novelist Susan Choi on the art of fiction. After the event, we signed books, shook hands with attendees, and went to dinner with our hosts in a packed restaurant. The next morning, I took a walk around the campus, ending up at the local bookstore, where I picked up and put down a dozen different novels before settling on one. Phrases like “aerosolized droplets” and “surface contamination” had not yet entered my daily vocabulary.

At the time, the United States had identified only a few dozen cases of the novel coronavirus, most of them linked to an outbreak on the Diamond Princess, a cruise ship that had docked in Yokohama, Japan. Though the disease was difficult to treat, the preventive measures advanced by epidemiologists — washing one’s hands with soap and covering one’s mouth when coughing — were easy. I assumed that COVID-19, like its antecedent SARS, would require a range of federal measures, including the confinement of travelers who came from affected countries. Containment seemed not only possible, but likely.

More here.

Thursday Poem

Breakage

I go down to the edge of the sea.
How everything shines in the morning light!
The cusp of the whelk,
the broken cupboard of the clam,
the opened, blue mussels,
moon snails, pale pink and barnacle scarred—
and nothing at all whole or shut, but tattered, split,
dropped by the gulls onto the gray rocks and all the moisture gone.
It’s like a schoolhouse
of little words,
thousands of words.
First you figure out what each one means by itself,
the jingle, the periwinkle, the scallop
full of moonlight.

Then you begin, slowly, to read the whole story.

by Mary Oliver

Stuck with Pound

J L Wall in Kirk Center:

What are we to do with Ezra Pound? One answer would be to “cancel” him, to dump his statue in some river and let the water erase it. This wouldn’t be without cause: calling his politics and personality repugnant is an understatement. But it would also be too simple. Pound’s fingerprints are everywhere: most famously on The Waste Land, but also on the careers of Yeats, Frost, William Carlos Williams, and H. D. (Hilda Doolittle); on the publication of Joyce’s Ulysses; on Imagism, Vorticism, and the “New Poetry” that emerged in Poetry a century ago. He was, inescapably, one of the pivotal figures of twentieth-century literature. If we have to live with Pound, the necessary question is how: merely as a player in literary history or also as the author of literature still worth reading?

…So let’s speak plainly. Pound was a central figure of twentieth-century literary history, without whom lasting, enduring works would not have taken the shapes they did. He was a talented, innovative poet—up until his mid-thirties. But the Cantos, on which he staked his reputation, were a failure. The modernist scholar Lawrence Rainey referred to them as “The Monument of Culture.” The truth is that they were born ruins. To find beauty in them, we have to do something like what Pound did in Cathay: read the word-by-word glosses and ignore the paraphrases. The reason is this: when we do try to make sense of them, they descend too often into secrecy, paranoia, and conspiracy. It’s not that there’s no “there” there—it’s that what is there far too often isn’t worthwhile.

Pound will endure, though, because in any honest literary history he must. The poems will, too—at least some of them, the early translations like Cathay especially. Billings’s scholarship makes the case for that—and for “The Seafarer,” “Homage to Sextus Propertius,” and the first Canto. Despite the ugliness of his person, some of what Pound created remains lastingly beautiful.  

More here.

The revolutionary work of Tycho Brahe

Kitty Ferguson in Delancey Place:

One of the underappreciated keys to launching the scientific age was the work of Tycho Brahe. His contribution was simple but revolutionary: At a point just before the invention of the telescope, he wanted to precisely record the positions of the planets and the stars. However, the instruments used before him to make these measurements produced unreliable results. Brahe was a Danish nobleman, and thus deemed to be above such pursuits as astronomy. But as a nobleman, he had the financial means of only a very few. He cast aside convention to spend a lifetime making better instruments to take these more precise measurements of the stars and planets, and then used those instruments to make measurements far superior to any that had been previously made. It was this revolutionary work that allowed his student Johannes Kepler to come up with his three laws of planetary motion. And it was Kepler’s work that was so helpful to Sir Isaac Newton and his laws of thermodynamics.

The first revolutionary instrument Tycho Brahe constructed was in Herrevad Abbey, Denmark, in 1572, which he called the “half-sextant”:

“One of Tycho’s first undertakings at Herrevad was to construct a new astronomical instrument, a ‘half-sextant’ with straight walnut legs and a curved brass arc. A little later he added a larger, interchange­able sixty-degree arc. It was this sixty-degree arc that gave a ‘sextant’ its name — probably coined by Tycho himself. Sixty de­grees is one-sixth of a circle; a half-sextant has a thirty-degree arc. Sextants and half-sextants resemble slices of pie. By sighting along the two legs or sides (where the pie is ‘cut’) — pointing one leg toward one star and the second leg toward another, for example — it was possible to measure the angular distance between two heavenly bodies. One could similarly measure a body’s altitude above the horizon.

More here.

Wednesday, August 19, 2020

Early Kermode

Stefan Collini in the London Review of Books:

Frank Kermode

I hadn’t​ been expecting to bump into Frank in one of the remoter stacks of the Cambridge University Library. This is where they keep the back numbers of old scholarly periodicals, a morgue only likely to be violated by those, like me, who now spend their days picking over the cairns left by academic labourers seventy years ago. And Frank Kermode had been dead for almost ten years – he died on 17 August 2010. I’d seen him in my mind quite frequently in the intervening decade: one of my running routes takes me past his old flat, and the sight of the building is enough to stir memories of evenings spent drinking and talking. But this was different. One might expect to meet any number of those who navvied at Eng. Lit. in the first half of the 20th century here, names now largely unknown even to their successors. But, quite suddenly, as I was looking for something else in the back pages of the impeccably learned (read: dry as dust) Review of English Studies for July 1949, there he was: ‘Frank Kermode’. Not, I was interested to note, ‘J.F. Kermode’ or any other variant that signalled the first name he never used. (It was one of the lesser indignities of his time in hospital during his final illness that well-meaning nurses and auxiliaries, scanning his patient details, would cheerily address him as ‘John’.) He was already using the name that was to become so familiar, the byline that launched a thousand pieces. Was he already that ‘Frank Kermode’, that effortlessly elegant, perceptive, slyly amusing, wide-ranging critic? Not really, not to judge by this piece of scholarly flotsam. It was a review of a book called Music and Poetry of the English Renaissance by Bruce Pattison: a learned, exact, even exacting, piece, full of abstruse detail, acknowledging the book’s achievement but, in the manner of young scholars everywhere, ticking it off for not drawing on the latest scholarship.

More here.

Seabird Poop Is Worth More Than $1 Billion Annually

Courtney Sexton in Smithsonian Magazine:

When Don Lyons, director of the Audubon Society’s Seabird Restoration Program visited a small inland valley in Japan, he found a local variety of rice colloquially called “cormorant rice.” The grain got its moniker not from its size or color or area of origin, but from the seabirds whose guano fertilized the paddies in the valley. The birds nested in the trees around the dammed ponds used to irrigate the rice fields, where they could feed on small fish stocked in the reservoirs. Their excrement, rich in nitrogen and phosphorus, washed into the water and eventually to the paddies, where it fertilized the crop.

The phenomenon that Lyons encountered is not a new one—references to the value of bird guano can be found even in the Bible, and an entire industry in South America grew around the harvesting of what many called “white gold.” What is new is that scientists have now calculated an exact value for seabird poop. This week, researchers published a study in Trends in Ecology and Evolution that estimates the value of seabird nutrient deposits at up to $1.1 billion annually. “I see that [many] people just think you care about something when it brings benefits, when they can see the benefits,” says Daniel Plazas-Jiménez, study author and researcher at the Universidade Federal de Goiás in Brazil. “So, I think that is the importance of communicating what seabirds do for humankind.”

More here.

Co-opt & Corrupt: How Trump Bent and Broke the GOP

Ruth Ben-Ghiat in the New York Review of Books:

“As time went on, it became clear that the sickness was a feature, that anyone who entered the building became a little sick themselves,” wrote the journalist Olivia Nuzzi in March 2018 of the Donald J. Trump White House and those who serve it. For a century, those who have worked closely with authoritarian rulers have shown the symptoms of this malady: a compulsion to praise the head of state and a willingness to sacrifice one’s own ideals, principles, and dignity to remain in his good graces, at the center of power.

In his relationship with Republican political elites, as in other areas of endeavor, President Trump has followed the model of “personalist rule” used by leaders like Hungarian Prime Minister Viktor Orbán. Some of these rulers destroy democracy, and others, like the Italian politician Silvio Berlusconi, govern nominally open societies in undemocratic ways. Yet personalist rule always concentrates power in one individual whose own political and financial interests and private relationships with other despots often prevail over national interests in shaping domestic and foreign policy. Loyalty to this head of state and his allies, rather than expertise, is a primary qualification for serving him, whether as ministers or bureaucrats, as is participation in his corruption schemes.

While some authoritarians have political parties of their own creation at their disposal, Trump had no ready-made vehicle for his political ambitions before 2016. He had to win over the Grand Old Party to gain credibility and access to its machine and gain the collaboration of its elites.

More here.

Hydroxychloroquine: A Morality Tale

Norman Doidge in Tablet:

Early in the coronavirus pandemic, a survey of the world’s frontline physicians showed hydroxychloroquine to be the drug they considered the most effective at treating COVID-19 patients. That was in early April, shortly after a French study showed it was safe and effective in lowering the virus count, at times in combination with azithromycin. Next we were told hydroxychloroquine was likely ineffective, and also dangerous, and that that French study was flawed and the scientist behind it worthy of mockery. More studies followed, with contradictory results, and then out came what was hailed by some as a definitive study of 96,000 patients showing the drug was most certainly dangerous and ineffective, and indeed that it killed 30% more people than those who didn’t take it. Within days, that study was retracted, with the editor of one of the two most respected medical journals in the Western world conceding it was “a monumental fraud.” And on it went.

Not only are lay people confused; professionals are. All that seems certain is that there is something disturbing going on in our science, and that if and when the “perfect study” were to ever come along, many won’t know what to believe.

More here.

Wednesday Poem

Acquainted With the Night

I have been one acquainted with the night.
I have walked out in rain—and back in rain.
I have outwalked the furthest city light.

I have looked down the saddest city lane.
I have passed by the watchman on his beat
And dropped my eyes, unwilling to explain.

I have stood still and stopped the sound of feet
When far away an interrupted cry
Came over houses from another street,

But not to call me back or say good-bye;
And further still at an unearthly height,
One luminary clock against the sky

Proclaimed the time was neither wrong nor right.
I have been one acquainted with the night.

by Robert Frost
from
Robert Frost Collected Poems

The Lying Life of Adults – a girl’s own story

Lara Feigel in The Guardian:

Elena Ferrante is so good on the bodily feelings of female adolescence: the sweaty, clotted skin, the sudden bulges as breasts form, the awkwardly exciting transformations. She is good, also, on the way that childhood friendships change, becoming infused with desire and longing. Her characters startle themselves with their readiness to betray their friends for the newly discovered opposite sex, but they startle themselves too when they jettison their heavy, often rather insulting male suitors and return to their nimbler companions.

Her latest novel, The Lying Life of Adults, is set over the protracted years of adolescence, from 12 to 17. The confusion of bodily change provides a murky backdrop for the lucid mental clarity this period of life can bring. These are years when you are an outsider to yourself, unable fully to recognise the person you are becoming, and an outsider to the once familiar figures who surround you. So it’s not surprising that these are often the years when the novelist is born. In this case, Giovanna becomes a novelist through observing the lies of adults , and through learning to tell her own. Giovanna has grown up in Naples, the familiar territory of Ferrante’s quartet. She lives high in the rarefied boulevards of the upper city, but has grown up knowing that there’s another city down below, where her father spent his childhood and his family still live. “To visit them you had to go down, and down, keep going down, into the depths of the depths of Naples.” She is the beloved daughter of two teacher parents, nurtured by the admiration of a father whose violence she nonetheless fears, because periodically he mashes up “sophisticated arguments and uncontrolled emotions”.

More here.

Quantum paradox points to shaky foundations of reality

George Musser in Science:

Nearly 60 years ago, the Nobel Prize–winning physicist Eugene Wigner captured one of the many oddities of quantum mechanics in a thought experiment. He imagined a friend of his, sealed in a lab, measuring a particle such as an atom while Wigner stood outside. Quantum mechanics famously allows particles to occupy many locations at once—a so-called superposition—but the friend’s observation “collapses” the particle to just one spot. Yet for Wigner, the superposition remains: The collapse occurs only when he makes a measurement sometime later. Worse, Wigner also sees the friend in a superposition. Their experiences directly conflict.

Now, researchers in Australia and Taiwan offer perhaps the sharpest demonstration that Wigner’s paradox is real. In a study published this week in Nature Physics, they transform the thought experiment into a mathematical theorem that confirms the irreconcilable contradiction at the heart of the scenario. The team also tests the theorem with an experiment, using photons as proxies for the humans. Whereas Wigner believed resolving the paradox requires quantum mechanics to break down for large systems such as human observers, some of the new study’s authors believe something just as fundamental is on thin ice: objectivity. It could mean there is no such thing as an absolute fact, one that is as true for me as it is for you.

 “It’s a bit disconcerting,” says co-author Nora Tischler of Griffith University. “A measurement outcome is what science is based on. If somehow that’s not absolute, it’s hard to imagine.”

More here.

Tuesday, August 18, 2020

The Last of the Hedgehogs

Chris Fleming in the Los Angeles Review of Books:

IN 1953, ISAIAH BERLIN published his long essay “The Hedgehog and the Fox,” outlining his now-famous Oxbridge variant on there are two kinds of people in this world. He drew the title from an ambiguous fragment attributed to the ancient lyric poet Archilochus of Paros: “The fox knows many things, but the hedgehog one big thing.” Written with the aim of pointing out tensions between Tolstoy’s grand view of history and the artistic temperament that saw such a view as untenable, Berlin’s essay became an unlikely hit, although less for its argument about Russian literature than for its contention that two antithetical personae govern the world of ideas: hedgehogs, who view the world in terms of some all-embracing system, seeing all facts as fitting into a grand pattern; and foxes, those pluralists or particularists who refuse “big theory” for reasons either intellectual or temperamental.

Berlin’s typology is beautifully blunt: perhaps more a serious game than a scientific typology, it works wonderfully only when it does. With the French American literary and cultural theorist René Girard, it works very well.

More here.