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A Brief History of Christmas Tree Lights

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Like Bert and Ernie or pork and fennel, Christmas trees and lights were made for each other. But how did stringing up a few hundred twinkling lights on a pine tree become a normal part of Christmas merrymaking?

Make Like a Tree and Get in the House

Well, it all started with the pagans. The ritual use of evergreens and lights during winter celebrations predates Christianity. Their symbolism (life in the dead of winter) must not have been lost on Christians, who adopted the pagan Yule log and began bringing evergreen trees into their homes during the winter. In the 17th century, the Germans combined the two elements and the tradition of illuminating the Christmas tree with candles began (legend has it that Martin Luther, inspired by a starry Christmas Eve sky, lit the first tree a century earlier, but the first documented references to a lit tree come from 1660).

The Christmas tree came to the United States in the early 19th century with the German-speaking Moravians (who often practiced the "putzing" or "dressing up" of the tree with decorative ornaments), who settled in Pennsylvania and North Carolina. One of the earliest documented references to a Christmas tree in America comes from a 1821 journal entry by Matthew Zahm of Lancaster, Pennsylvania, who saw his friends "on the hill at Kendrick's saw mill" looking for a good tree to put in the living room.

Christmas trees quickly spread from German enclaves and became an established part of American Christmas celebrations.

In 1832, Harvard University professor Charles Follen, inspired by German tradition, may have been the first American to illuminate a Christmas tree when he decorated his with candles. In 1851, Mark Carr opened the first Christmas tree retail operation, cutting down trees in the Catskill Mountains and selling them at New York City's Washington Market. In 1856, the illuminated Christmas tree hit the big time when President Franklin Pierce had the White House tree decorated with candles.

The candle-lit Christmas tree, to no one's surprise, had some problems. For one, it was hard to keep the candles attached to the branches. People tried pinning the candle down with a needle, tying the candle to the branch with wire or string, and using melted wax as an adhesive. None of these methods worked very well. Fortunately, a breakthrough came in the form of Frederick Artz's 1878 invention: a clip-on candleholder. But even if you got the candles to stay, there was the little manner of having a very large, vary flammable tree in your living room. People usually kept the candles lit for no longer than 30 minutes at a time, kept an eye on the tree the whole time, and always had a bucket of sand or water at the ready in case of fire. Of course, accidents still happened. Eventually, a group of insurance companies collectively refused to pay for fires started by Christmas trees and began putting a "knowing risks" clause in their policies.

The Christmas Tree, Like Bob Dylan, Goes Electric

1st-xmas-treeOn December 22, 1882, Edward Johnson—a friend of Thomas Edison and vice president of the Edison Electric Light Company—displayed the first electrically illuminated Christmas tree in the parlor of his New York City home (pictured). The tree, powered by an Edison generator (Johnson lived in the first section of the city to be wired for electricity), featured eighty hand-wired red, white and blue light bulbs—which, according to a reporter from the Detroit Post and Tribune, were each as "large as an English walnut"—and sat on a motorized box that rotated it "some six times a minute."Â  Over the next few years, Johnson and Edison experimented with and improved upon Johnson's electric tree lights. In 1890, they took them to the market place, publishing a 28-page brochure about "Edison miniature lamps for Christmas trees" and placing ads for the product in popular magazines.


Electric tree lights, like the illuminated tree before them, got national attention when they made their debut at the White House on Grover Cleveland's 1895 Christmas tree. Most people who weren't the President of the United States would have to wait for their own electric tree lights, however. Public distribution of electricity was spotty, and most people living outside major cities would have had to supply their own electric power from a household generator. Lighting an average-sized tree would have also been prohibitively expensive for most people. The generator, the fee for the wireman who would need to hand-wire all the lights on the tree, and the wire and lights themselves would usually cost upwards of $300.

A Chicken in Every Pot and an Electric Christmas Tree in Every Living Room

In 1903, a breakthrough in electric lighting technology came when GE offered the first pre-wired string of tree lights to the public. The string of lights, called a "festoon," consisted of a string of eight pre-wired porcelain sockets, eight Edison miniature colored glass lamps, and a screw-in plug for a wall socket (the length of wire all this was attached to was not made by GE, but the American Eveready Company, which would go on to become part of the National Carbon Company and give the world the long-lasting alkaline battery).

Festoons were still pretty expensive at $12 per string (slightly less than an average week's wages for many people), but that problem would be solved when GE attempted to patent their Christmas lighting festoon. The patent application was refused, because the product was based on knowledge that an ordinary wireman possessed. With the market wide open, other companies and inventors began to produce their own tree light sets and the American Christmas light industry was born.

One early Christmas light entrepreneur was teenager Albert Sadacca, who convinced his parents to use the material from their novelty lighting business to produce affordable tree light sets. He later started a trade organization called the National Outfit Manufacturers Association (NOMA). NOMA eventually became the NOMA Electric Co. and dominated the Christmas light market until the 1960s, when competition from foreign imports drove them into bankruptcy and out of the lighting business.

This article originally appeared last December.

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
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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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Here's How to Change Your Name on Facebook
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Whether you want to change your legal name, adopt a new nickname, or simply reinvent your online persona, it's helpful to know the process of resetting your name on Facebook. The social media site isn't a fan of fake accounts, and as a result changing your name is a little more complicated than updating your profile picture or relationship status. Luckily, Daily Dot laid out the steps.

Start by going to the blue bar at the top of the page in desktop view and clicking the down arrow to the far right. From here, go to Settings. This should take you to the General Account Settings page. Find your name as it appears on your profile and click the Edit link to the right of it. Now, you can input your preferred first and last name, and if you’d like, your middle name.

The steps are similar in Facebook mobile. To find Settings, tap the More option in the bottom right corner. Go to Account Settings, then General, then hit your name to change it.

Whatever you type should adhere to Facebook's guidelines, which prohibit symbols, numbers, unusual capitalization, and honorifics like Mr., Ms., and Dr. Before landing on a name, make sure you’re ready to commit to it: Facebook won’t let you update it again for 60 days. If you aren’t happy with these restrictions, adding a secondary name or a name pronunciation might better suit your needs. You can do this by going to the Details About You heading under the About page of your profile.

[h/t Daily Dot]

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