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Feel Art Again: "Lady Lilith"

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The Rossetti family, helmed by Gabriele and Frances, was thoroughly enmeshed in the arts. Papa Gabriele was a Dante Alighieri scholar and a professor of Italian at King's College London, while his wife, Frances, was a governess and teacher. All four of their children also pursued careers in the arts and education, including their son Dante. Today, we'll take a closer look at Dante Rossetti and his 1867 painting, "Lady Lilith."

1. Attached to the original frame of "Lady Lilith" was an identifier, of sorts:

Beware of her fair hair, for she excells
All women in the magic of her locks
And when she twines them round a young man's neck
She will not ever set him free again.

The lines are taken from Percy Bysshe Shelley's translation of the Walpurgisnacht scene in Johann Wolfgang von Goethe's Faust.

2. Rossetti was actually born Gabriel Charles Dante Rossetti; he was known to his friends as "Gabriel." In publications and on artwork, though, he used "Dante" in honor of Dante Alighieri. He published several translations of Dante and other Medieval Italian poets, and several of his paintings are Dante-inspired scenes.

3. Friends of Rossetti were sometimes asked to meet him at the "Wombat's Lair" in the London Zoo. He loved exotic animals, especially wombats, and even had two as pets. Top, his first pet wombat, would accompany Rossetti to the dinner table and was even allowed to sleep in the table's large centerpiece during meals.

4. The sonnet "Body's Beauty" was written by Rossetti about "Lady Lilith" in opposition to "Soul's Beauty," which he composed about his painting "Sibylla Palmifera."

Body's Beauty
Of Adam's first wife, Lilith, it is told
(The witch he loved before the gift of Eve,)
That, ere the snake's, her sweet tongue could deceive,
And her enchanted hair was the first gold.
And still she sits, young while the earth is old,
And, subtly of herself contemplative,
Draws men to watch the bright web she can weave,
Till heart and body and life are in its hold.

The rose and poppy are her flowers; for where
Is he not found, O Lilith, whom shed scent
And soft-shed kisses and soft sleep shall snare?
Lo! as that youth's eyes burned at thine, so went
Thy spell through him, and left his straight neck bent
And round his heart one strangling golden hair.

5. Rossetti was not only a poet and a painter, but also a designer of stained glass, a critic, and a translator. His older sister, Christina, was a poet as well, while his younger siblings Michael and Maria were a critic and an author, respectively. Elizabeth Siddal, his wife, served as a model for Rossetti and other painters, but eventually became a painter herself, at which time she ceased modeling.

6. Both Rossetti and his wife succumbed to the dangers of drugs. The two were married in 1860 and Siddal gave birth to a stillborn child the following year. Within a year, she died of an overdose of laudanum. Rossetti became increasingly depressed after her death, even going so far as to bury his unpublished manuscripts with his wife. (He later exhumed and published them.) In the final years of his life, Rossetti was addicted to chloral and gradually became less mentally stable. He died on Easter Sunday, 1882, just over twenty years after the death of his wife.

A larger version of "Lady Lilith" is available from the Walker Art Gallery. Written works by Dante, Christina, William, and William's wife Lucy are available on Project Gutenberg.

'Feel Art Again' appears every Tuesday and Thursday.

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iStock // Ekaterina Minaeva
Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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Scientists Think They Know How Whales Got So Big
May 24, 2017
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It can be difficult to understand how enormous the blue whale—the largest animal to ever exist—really is. The mammal can measure up to 105 feet long, have a tongue that can weigh as much as an elephant, and have a massive, golf cart–sized heart powering a 200-ton frame. But while the blue whale might currently be the Andre the Giant of the sea, it wasn’t always so imposing.

For the majority of the 30 million years that baleen whales (the blue whale is one) have occupied the Earth, the mammals usually topped off at roughly 30 feet in length. It wasn’t until about 3 million years ago that the clade of whales experienced an evolutionary growth spurt, tripling in size. And scientists haven’t had any concrete idea why, Wired reports.

A study published in the journal Proceedings of the Royal Society B might help change that. Researchers examined fossil records and studied phylogenetic models (evolutionary relationships) among baleen whales, and found some evidence that climate change may have been the catalyst for turning the large animals into behemoths.

As the ice ages wore on and oceans were receiving nutrient-rich runoff, the whales encountered an increasing number of krill—the small, shrimp-like creatures that provided a food source—resulting from upwelling waters. The more they ate, the more they grew, and their bodies adapted over time. Their mouths grew larger and their fat stores increased, helping them to fuel longer migrations to additional food-enriched areas. Today blue whales eat up to four tons of krill every day.

If climate change set the ancestors of the blue whale on the path to its enormous size today, the study invites the question of what it might do to them in the future. Changes in ocean currents or temperature could alter the amount of available nutrients to whales, cutting off their food supply. With demand for whale oil in the 1900s having already dented their numbers, scientists are hoping that further shifts in their oceanic ecosystem won’t relegate them to history.

[h/t Wired]