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The Word "Droid" is a Registered Trademark of LucasFilm Ltd.

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Daven Hiskey runs the wildly popular interesting fact website Today I Found Out. To subscribe to his “Daily Knowledge” newsletter, click here.


Shortly before Verizon launched their DROID line of mobile devices, Lucasfilm Ltd. filed a trademark on October 9, 2009, for the term “Droid." Specifically, they claimed the term for:

Wireless communications devices, including, mobile phones, cell phones, hand held devices and personal digital assistants, accessories and parts therefor, and related computer software and wireless telecommunications programs; mobile digital electronic devices for the sending and receiving of telephone calls, electronic mail, and other digital data, for use as a digital format audio player, and for use as a handheld computer, electronic organizer, electronic notepad, and digital camera; downloadable ring tones and screen savers; cameras, pagers and calling cards.

As a result, Verizon paid Lucasfilm Ltd. (and now Disney) an undisclosed sum for the rights to use this word as a brand name.

The word “droid” is an aphesis form of “android,” a word that’s been around since at least the 1700s. The first documented mention of “android” is in the Ephraim Chambers’ Cyclopedia, “Albertus Magnus is recorded as having made a famous androides.” Android derives from the Greek ????? (andro-), meaning “man,” and the suffix -????? (-eides), meaning “form, likeness, appearance, or resemblance”—hence the definition of android being “automaton resembling a human being."

The word “droid” was first used in Star Wars: A New Hope, which came out in 1977. That's why Lucas was able to trademark the word, even though it wasn't used to describe a wireless communication device (unless the particular droid was being used to relay messages wirelessly; I suppose the Imperial Probe Droid in Empire Strikes Back might have had that capability). You’ll note that unlike in most other science fiction where an android signified a machine that resembled a human, Star Wars’ droids did not need to resemble a human (though some did).

Check out more interesting articles from Daven over at Today I Found Out and subscribe to his Daily Knowledge newsletter here.

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Brain Training Could Help Combat Hearing Loss, Study Suggests
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Contrary to what you might think, the hearing loss that accompanies getting older isn't entirely about your ears. Studies have found that as people get older, the parts of their brain that process speech slow down, and it becomes especially difficult to isolate one voice in a noisy environment. New research suggests there may be a way to help older people hear better: brain training.

The Verge reports that a new double-blind study published in Current Biology suggests that a video game could help older people improve their hearing ability. Though the study was too small to be conclusive, the results are notable in the wake of several large studies in the past few years that found that the brain-training games on apps like Luminosity don't improve cognitive skills in the real world. Most research on brain training games has found that while you might get better at the game, you probably won't be able to translate that skill to your real life.

In the current study, the researchers recruited 24 older adults, all of whom were long-term hearing-aid users, for eight weeks of video game training. The average age was 70. Musical training has been associated with stronger audio perception, so half of the participants were asked to play a game that asked them to identify subtle changes in tones—like you would hear in a piece of music—in order to piece together a puzzle, and the other half played a placebo game designed to test their memory. In the former, as the levels got more difficult, the background noise got louder. The researchers compare the task to a violinist tuning out the rest of the orchestra in order to listen to just their own instrument.

After eight weeks of playing their respective games around three-and-a-half hours a week, the group that played the placebo memory game didn't perform any better on a speech perception test that asked participants to identify sentences or words amid competing voices. But those who played the tone-changing puzzle game saw significant improvement in their ability to process speech in noise conditions close to what you'd hear in an average restaurant. The tone puzzle group were able to accurately identify 25 percent more words against loud background noise than before their training.

The training was more successful for some participants than others, and since this is only one small study, it's possible that as this kind of research progresses, researchers might find a more effective game design for this purpose. But the study shows that in specific instances, brain training games can benefit users. This kind of game can't eliminate the need for hearing aids, but it can help improve speech recognition in situations where hearing aids often fail (e.g., when there is more than one voice speaking). However, once the participants stopped playing the game for a few months, their gains disappeared, indicating that it would have to be a regular practice.

[h/t The Verge]

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11-Year-Old Creates a Better Way to Test for Lead in Water
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In the wake of the water crisis in Flint, Michigan, a Colorado middle schooler has invented a better way to test lead levels in water, as The Cut reports.

Gitanjali Rao, an 11-year-old seventh grader in Lone Tree, Colorado just won the 2017 Discovery Education 3M Young Scientist Challenge, taking home $25,000 for the water-quality testing device she invented, called Tethys.

Rao was inspired to create the device after watching Flint's water crisis unfold over the last few years. In 2014, after the city of Flint cut costs by switching water sources used for its tap water and failed to treat it properly, lead levels in the city's water skyrocketed. By 2015, researchers testing the water found that 40 percent of homes in the city had elevated lead levels in their water, and recommended the state declare Flint's water unsafe for drinking or cooking. In December of that year, the city declared a state of emergency. Researchers have found that the lead-poisoned water resulted in a "horrifyingly large" impact on fetal death rates as well as leading to a Legionnaires' disease outbreak that killed 12 people.

A close-up of the Tethys device

Rao's parents are engineers, and she watched them as they tried to test the lead in their own house, experiencing firsthand how complicated it could be. She spotted news of a cutting-edge technology for detecting hazardous substances on MIT's engineering department website (which she checks regularly just to see "if there's anything new," as ABC News reports) then set to work creating Tethys. The device works with carbon nanotube sensors to detect lead levels faster than other current techniques, sending the results to a smartphone app.

As one of 10 finalists for the Young Scientist Challenge, Rao spent the summer working with a 3M scientist to refine her device, then presented the prototype to a panel of judges from 3M and schools across the country.

The contamination crisis in Flint is still ongoing, and Rao's invention could have a significant impact. In March 2017, Flint officials cautioned that it could be as long as two more years until the city's tap water will be safe enough to drink without filtering. The state of Michigan now plans to replace water pipes leading to 18,000 households by 2020. Until then, residents using water filters could use a device like Tethys to make sure the water they're drinking is safe. Rao plans to put most of the $25,000 prize money back into her project with the hopes of making the device commercially available.

[h/t The Cut]

All images by Andy King, courtesy of the Discovery Education 3M Young Scientist Challenge.

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