This unusually long potentiometer shaft allows the signal path between the audio source and the potentiometer to be kept very short, thus preventing possible interference of the signal.

ENGADGET: Sennheiser unveils HDVA 600 analog headphone amp, asks for $1,600

The high-end devices have a fully symmetrical layout for operation with analogue audio sources, thus ensuring absolutely symmetrical signal transmission from the source to the headphones.

ENGADGET: Sennheiser unveils HDVA 600 analog headphone amp, asks for $1,600

After the publication of the book, a drama scholar wrote to Mr. Unsworth asking for his source on the hand-signal system.

WSJ: A Tribute to Barry Unsworth | Dear Book Lover

But after a month - as shown in these videos - the animals learned to associate the signal in their brains with the infrared source.

BBC: Lab rats 'acquire sixth sense'

The court's ruling has put aside, for the short run, a more potent challenge of the FCC's ability to mandate so-called software-defined devices, which use open-source software to define how a signal can be sent or received.

FORBES: Magazine Article

In the future, we hope that a global army of open-source code developers, students and other experts in digital signal processing, as well as citizen scientists willing to lend their intelligence to our exploration, will have access to the same technology and join our quest.

CNN: What if there's somebody else out there?

Ambient radio waves have largely been ignored as a potential power source until recently, because the power of a broadcast radio signal rapidly decreases with distance.

ECONOMIST: Monitor

They began to search actively for the signal, eventually achieving perfect scores in tracking and identifying the correct location of the invisible light source.

BBC: Lab rats 'acquire sixth sense'

Having exited a period of significant investment, Magma is improving profits, presents a credible second source position to the dominant digital EDA vendor, and now offers a unique mixed-signal product bridging both markets and addressing the weaknesses of the incumbents.

FORBES: Buy These Small-Caps Before They Get Big