Acoustic listening devices developed for the Dutch army as part of air defencesystems research between World Wars 1 and 2.
England built something similar, too, but out of cement.
|If An A-Bomb Falls|
|The Internet Turns 40|
|Naked-Eye Astronomical Instruments of the 18th Century|
|Why Black Friday is Called Black Friday|
|May 28, 585 B.C.: Predicted Solar Eclipse Stops Battle|
|"There needs to be more aggressive enforcement action on tech companies like Google."|
|“Not a single personal insult was uttered by any member of the crew.”|
|Making a Movie Inside a Video Game|
|How to Avoid Jury Duty|
|Google Map Shows You the Most Photographed Areas of the World|
|“Clicking on a Facebook advert may reveal things about yourself you don’t want anyone to know.”|
|"Cells have the capacity to process and respond to instructions and codes inputted into their main system."|
|“Any person, organization or government serious about web security should return to plain-text.”|