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RIP, Sony Walkman

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Last Friday, Sony announced the end of the Walkman Era -- a period that lasted more than three decades, defining the personal music listening experience for pretty much everyone in my generation (I was born a year before the Walkman was). Sony will no longer produce the portable cassette-based Walkman, though they are still selling the CD-based Discman and MiniDisc Walkman. The Walkman was first introduced on July 1, 1979. Every five years (until 1999), Sony introduced an "anniversary model" Walkman. What happened next, according to Wikipedia:

However, cassette Walkman innovation would come to an end as during its 25th Anniversary, Sony chose to not introduce another limited run cassette model but instead, brought out the hard disk based NW-HD1 in 2004 to officially augur the death of the compact cassette. (Sony did release two anniversary models in 2003, but they were MiniDisc players — see below.) The last play-only cassette Walkman to be introduced (in North America, at least) was the WM-FX290, first sold in 2002, which also featured digital tuning, AM, FM, TV and weather band radio, operating on a single AA battery. In Canada, at least (where, like all portable radios distributed in that country, the WM-FX290 lacked access to TV and weather bands) this device appears to have ceased production as of May, 2006. In August 2006, Sony Canada began selling cassette Walkman personal stereos again, but this time they were only offering a basic model, the WM-FX197.

And another technological marvel bites the dust, with little ceremony, and with the news buried on a Friday.

The model I remember best looked a lot like the one pictured above (model WM-FX421), but was a few years earlier and lacked the LCD screen. I carried it through every day of high school, and kept a couple of mix tapes in my locker, along with a collection of REM and Simon & Garfunkel tapes handed down from my brother. I remember wondering why in the world my Walkman had so many radio presets, since there were only two or three radio stations I'd ever consider listening to. Anyway -- it worked great, I brought it to college, and I used that thing every day on my walks to and from campus. It was the machine that introduced me to the Pixies, my all-time favorite band. It was a very personal device, and it lasted much longer than any iPod I've ever had (and yeah, I've had a lot of iPods). I still have that Walkman -- it's in my basement. It still works.

What's Your Walkman Story?

The Walkman has inspired a lot of personal stories. My favorite so far is Stefan Sagmeister's personal account of listening to the Police album Synchronicity on a Walkman while riding a motorcycle -- one of his happiest memories (see his story here). What's your Walkman story?

Further reading: The Story Behind the Sony Walkman, Walkman History 101, and The Walkman Turns 30.

(Via CrunchGear.)

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Wired, YouTube
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technology
Watch This Robot Crack a Safe in 15 Minutes
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Wired, YouTube

When Nathan Seidle was gifted a locked safe with no combination from his wife, he did what any puzzlemaster—or, rather, what any engineer with a specific set of expertise in locks and robotics—would do: He built a robot to crack the safe. Seidle is the founder of SparkFun, an electronics manufacturer based in Denver, and this gift seemed like the perfect opportunity to put his professional knowledge to the test.

The process of building a safecracking robot involved a lot of coding and electronics, but it was the 3D printing, he said, that became the most important piece. Seidle estimated that it would take four months to have the robot test out different combinations, but with one major insight, he was able to shave off the bulk of this time: While taking a closer look at the combination dial indents, he realized that he could figure out the third digit of the combination by locating the skinniest indent. Thanks to this realization, he was soon able to trim down the number of possible combinations from a million to a thousand.

Watch the video from WIRED below to see Seidle's robot in action, which effectively whittled a four-month safecracking project down to an impressive 15-minute job.

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Big Questions
How Does Autopilot Work on an Airplane?
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iStock

How does autopilot work on an airplane?

Joe Shelton:

David Micklewhyte’s answer is a good one. There are essentially a few types of features that different autopilots have. Some autopilots only have some of these features, while the more powerful autopilots do it all.

  • Heading Hold: There’s a small indicator that the pilot can set on the desired heading and the airplane will fly that heading. This feature doesn’t take the need for wind correction to desired routing into account; that’s left to the pilot.
  • Heading and Navigation: In addition to holding a heading, this version will take an electronic navigation input (e.g. GPS or VOR) and will follow (fly) that navigation reference. It’s sort of like an automated car in that it follows the navigator’s input and the pilot monitors.
  • Altitude Hold: Again, in addition to the above, a desired altitude can be set and the aircraft will fly at that altitude. Some autopilots have the capability for the pilot to select a desired altitude and a climb or descent rate and the aircraft will automatically climb or descend to that altitude and then hold the altitude.
  • Instrument Approaches: Autopilots with this capability will fly preprogrammed instrument approaches to the point where the pilot either takes control and lands or has the autopilot execute a missed approach.

The autopilot is a powerful computer that takes input from either the pilot or a navigation device and essentially does what it is told to do. GPS navigators, for example, can have a full flight plan entered from departure to destination, and the autopilot will follow the navigator’s guidance.

These are the majority of the controls on the autopilot installed in my airplane:

HDG Knob = Heading knob (Used to set the desired heading)

AP = Autopilot (Pressing this turns the autopilot on)

FD = Flight Director (A form of navigational display that the pilot uses)

HDG = Heading (Tells the autopilot to fly the heading set by the Heading Knob)

NAV = Tells the autopilot to follow the input from the selected navigator

APR = Tells the autopilot to fly the chosen approach

ALT = Tells the autopilot to manage the altitude, controlled by the following:

VS = Vertical Speed (Tells the autopilot to climb or descend at the chosen rate)

Nose UP / Nose DN = Sets the climb/descent rate in feet per minute

FLC = Flight Level Change (An easy manual way to set the autopilot)

ALT Knob = Used to enter the desired altitude

This post originally appeared on Quora. Click here to view.

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