LibraryInventions & DiscoveriesOne card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

HistoryOne small ahaInvention or discovery

This dot-and-dash encoding system became closely associated with electrical telegraphy.

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HistoryOne small aha
Your new ahaMorse code.

Morse code represents characters using short and long signals. Source: Morse code

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