Larry Kahaner - Larry Kahaner is an American journalist and author who resides in Bethesda, Maryland. Steve Galchutt shows off the custom-made low-wattage transmitter he uses on his treks. Chase Brush ...

Norman Joseph Woodland and Bernard Silver invented the barcode, patenting the technology in 1952. The first retail item ...

In case you’re not a former sailor or ham radio operator, the above is not a typesetting snafu. Those are the dashes and dots (or “dits” and “dahs,” as telegraph operators often vocalize them) that ...

When the first radios and telegraph lines were put into service, essentially the only way to communicate was to use Morse code. The first transmitters had extremely inefficient designs by today’s ...

“Calling all. This is our last cry before our eternal silence.” With that, in January 1997, the French coast guard transmitted its final message in Morse code. Ships in distress had radioed out dits ...

Morse code is a communication system developed by Samuel Morse, an American inventor, in the late 1830s. The code uses a combination of short and long pulses – dots and dashes, respectively – that ...