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 ...

Translated to Morse code, SOS looks like this ... but there’s actually a medical definition of the term. As Merriam-Webster notes, it can mean “if occasion require; if necessary.” ...

Morse’s original plan for code was based on how semaphore systems worked. Messages would appear in a dictionary, and each message would be assigned a number. The telegraph produced an inked line ...