The first hydraulic telegraph was invented in the fourth century B.C.E. by a Hellenistic writer on the art of war, named Aeneas Tacticus.

Why does the landscape remain lit 30 to 45 minutes after the sun has set? Harriett Drake, Fayetteville, Georgia What you’re seeing then is twilight. From wherever you’re standing, shortly after sunset ...

Morse Code Day is April 27, 2018. Learn how the electric telegraph revolutionized how quickly messages could be received. Katya Vines, PhD You have big news that you want to share with family in ...

Samsung wants to teach you about the history of electronics, as long as you can stay awake long enough to sit through the dull lessons. Through its Innovation Museum, the company is releasing five ...

Morse Code Day, observed on April 27, honors Samuel Morse, the inventor of Morse code, and celebrates this groundbreaking method of communication. Before modern technology, messages took weeks to ...

Learning Morse code, with its tappity-tap rhythms of dots and dashes, could take far less effort—and attention—than one might think. The trick is a wearable computer that engages the sensory powers of ...