April 9th, 1860 – The Oldest Voice Recording

The phonautograph is the earliest known device for recording sound. Previously, tracings had been obtained of the sound-producing vibratory motions of tuning forks and other objects by physical contact with them, but not of actual sound waves as they propagated through air or other media. Invented by Frenchman Édouard-Léon Scott de Martinville, it was patented […]

June 2nd, 1896 – The “Birth Certificate” of Radio

Guglielmo Marconi, 1st Marquis of Marconi was an Italian inventor and electrical engineer, known for his pioneering work on long-distance radio transmission and for his development of Marconi’s law and a radio telegraph system. He is often credited as the inventor of radio, and he shared the 1909 Nobel Prize in Physics with Karl Ferdinand Braun “in […]

April 29th, 1882 – All Aboard the Electric Bus!

The Electromote was the world’s first vehicle run like a trolleybus, which was first presented to the public on April 29th, 1882, by its inventor Dr. Ernst Werner von Siemens in Halensee, a suburb of Berlin, Germany. The Elektromote operated from April 29th to June 13th, 1882, on a 540 m (591 yard) trail-track starting at […]

April 19th, 1919 – Man Survives Jumping Out of Airplane!

Leslie Leroy Irvin was born in Los Angeles and grew up to become a stunt-man for the fledgling Californian film industry; he had performed acrobatics on trapezes from balloons and then make descents using a parachute. Irvin made his first jump when aged fourteen. For a film called Sky High, he first jumped from an aircraft from […]

April 12th, 1937 – Britain Invents the Turbojet Engine

Air Commodore Sir Frank Whittle was an English Royal Air Force (RAF) engineer air officer. He is credited with single handedly inventing the turbojet engine. A patent was submitted by Maxime Guillaume in 1921 for a similar invention; however, this was technically unfeasible at the time. Whittle’s engines were developed some years earlier than those of […]

This Day in History – February 14th, 1876

Alexander Graham Bell was a professor of elocution at Boston University and tutor of deaf children while pursuing his own research into a method of telegraphy that could transmit multiple messages over a single wire simultaneously, a so-called “harmonic telegraph”. Bell formed a partnership with two of his students’ parents, including prominent Boston lawyer Gardiner […]

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