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Vimeo // Mike Brookes
Vimeo // Mike Brookes

The Petard Pinch

Vimeo // Mike Brookes
Vimeo // Mike Brookes

Starting in February of 1942, the codebreakers at Bletchley Park faced a serious problem: They couldn't break the German Army's latest "M4" flavor of the Enigma. Although work continued on breaking this new version of the code, the outlook was grim. But on October 30, HMS Petard and three other Royal Navy destroyers attacked the German U-boat U-559, eventually forcing it to surface and the German crew to abandon ship. While the Germans swam away from their ruined U-boat, three British seamen left Petard and swam to the sinking U-559. What they pinched from the wreck saved tens of thousands of lives for the Allies.

Made for an exhibit at Bletchley Park, here's a video explaining and commemorating what became known as "The Petard Pinch," an act of wartime bravery that led to the breaking of the M4 Enigma.

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Can You 'Hear' These Silent GIFs?
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GIFs are silent—otherwise they wouldn't be GIFs. But some people claim to hear distinct noises accompanying certain clips. Check out the GIF below as an example: Do you hear a boom every time the structure hits the ground? If so, you may belong to the 20 to 30 percent of people who experience "visual-evoked auditory response," also known as vEAR.

Researchers from City University London recently published a paper online on the phenomenon in the journal Cortex, the British Psychological Society's Research Digest reports. For their study, they recruited more than 4000 volunteers and 126 paid participants and showed them 24 five-second video clips. Each clip lacked audio, but when asked how they rated the auditory sensation for each video on a scale of 0 to 5, 20 percent of the paid participants rated at least half the videos a 3 or more. The percentage was even higher for the volunteer group.

You can try out the researchers' survey yourself. It takes about 10 minutes.

The likelihood of visual-evoked auditory response, according to the researchers, directly relates to what the subject is looking at. "Some people hear what they see: Car indicator lights, flashing neon shop signs, and people's movements as they walk may all trigger an auditory sensation," they write in the study.

Images packed with meaning, like two cars colliding, are more likely to trigger the auditory illusion. But even more abstract images can produce the effect if they have high levels of something called "motion energy." Motion energy is what you see in the video above when the structure bounces and the camera shakes. It's why a video of a race car driving straight down a road might have less of an auditory impact than a clip of a flickering abstract pattern.

The researchers categorize vEAR as a type of synesthesia, a brain condition in which people's senses are combined. Those with synesthesia might "see" patterns when music plays or "taste" certain colors. Most synesthesia is rare, affecting just 4 percent of the population, but this new study suggests that "hearing motion synesthesia" is much more prevalent.

[h/t BPS Research Digest]

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The Google Docs Audio Hack You Might Not Know About
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To the uninitiated, Google Docs may take some warming up to. But although it may seem like any other word processor, Docs offers its fair share of nifty features that can make your life a whole lot easier. The only problem is that few people seem to know about them.

The Voice Typing function is one such example. As Quartz discovered, this tool can be used to drastically cut down on the time it takes to transcribe an interview or audio recording—a feature that professionals from many fields could benefit from. Voice Typing might also be useful to those who prefer to dictate what they want to write, as well as those with impairments that prevent them from typing.

Whatever the case may be, it's extremely easy to use. Just open a blank document, click on "tools" at the top, and then select "voice typing." A microphone icon will pop up, allowing you to choose your language. After you've done that, simply click the icon when you're ready to start speaking!

Unfortunately, it's unable to pick up an audio recording played through speakers, so you'll need to grab a pair of headphones, plug them into your phone or voice recorder, and dictate what's said as you listen along. Still, this eliminates the hassle of having to pause and rewind in order to let your fingers catch up to the audio—unless you're the champion of a speed typing contest, in which case you probably don't need this tutorial.

According to Quartz, the transcription is "shockingly" accurate, even getting the spelling of last names right. For a how-to guide on the Voice Typing tool, check out Quartz's video below.

[h/t Quartz]

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