Video: The Origins of the SOS Distress Signal

NOV 22, 1906 — The SOS Distress Signal Is Adopted International maritime authorities agree on SOS as the global signal for emergencies — saving countless lives in the century to come. | USA Awakening

Did you know. The ‘SOS’ signal was originally used in Morse Code to indicate distress and request for urgent assistance. The letters ‘S’ and ‘O’ were chosen as distress letters for use because they were simple, distinctive, and easy to transmit. It is a misconception that SOS is an acronym for ‘Save our Souls’. The ‘SOS’ pattern is still used in modern recreational vessel safety equipment including the flash sequence on Electronic Visual Distress Signalling devices. More info at: https://www.tra

sos: 定義と使用法を探る | RedKiwi Words

Make a S.O.S signal using LED and Arduino