1940 Wireless Telegraph

The gentleman shown above is demonstrating a simple wireless telegraph, the plans for which appeared 75 years ago this month in the December 1940 issue of Popular Science. As you can see from the diagram here, the concept was nothing new, and is quite simple.  The transmitter sends an AF signal of about 75 volts […]

Wireless Goes to War: 1914

A hundred years ago, the wireless had unquestionably established itself as one of the tools of war. On this day in 1914, the Mexican Port of Veracruz was under American occupation after three days of fierce fighting under the command of Admiral Frank Friday Fletcher.  The invasion was a response to the arrival of arms bound […]

Mahlon Loomis: Inventor of Radio?

It’s generally accepted in the history of science and technology that radio couldn’t have been invented until James Clerk Maxwell came up with Maxwell’s Equations in 1865.  That theoretically underpinning of radio were verified experimentally by Heinrich Hertz in 1887.  (Hertz, it turned out, was using electromagnetic waves of about two meters in wavelength, it turns, meaning […]

1915 Galveston Hurricane

A hundred years ago, a major hurricane hit the United States, leaving between 275-400 dead and $50 million in property damage. Adjusted for inflation, this made the storm the fourth costliest in U.S. history. The storm brought winds and heavy rains to the Leeward Islands, Puerto Rico, Hispaniola, and Cuba. Like the deadly hurricane of […]