Learn Your Name in Morse Code Day!

Morse code is a way to transmit text through a series of signals. Each character or alphabet in a language is represented by a sequence of dots and dashes.

SOS
First demonstrated on January 11, 1838 by Alfred Vail and Samuel Morse, Morse code soon became commonly used by the military and the aviation industry worldwide.
Until 1999 the distress signal "SOS", or "··· – – – ···" in Morse code, was used to communicate distress by ships and naval vessels around the world. Although it does not stand for anything it has been remembered as "Save Our Souls" or "Save Our Ship".

It was replaced by the Global Maritime Distress Safety System in 1999, but is still widely recognised as a distress signal today.