Penny-farthing term and "hi-wheel" (and variants) are preferred by many modern enthusiasts. Following the popularity of the boneshaker, Eugène Meyer, a Frenchman, invented the high-wheeler bicycle design in 1869 and fashioned the wire-spoke tension wheel. Around 1870 English inventor James Starley, described as the father of the bicycle industry, and others, began producing bicycles based on the French boneshaker but with front wheels of increasing size, because larger front wheels, up to in diameter, enabled higher speeds on bicycles limited to direct drive. In 1878, Albert Pope began manufacturing the Columbia bicycle outside Boston, starting their two-decade heyday in America. Although
Cipher Department of the High Command of the Wehrmacht such as the rotor cipher machine ENIGMA machine. It was the successor to the former Chi bureau () of the Reichswehr Ministry. The letter "Chi" for the Chiffrierabteilung is, contrary to what one might expect, not the Greek letter Chi, nor anything to do with the chi test, a common cryptographic test used as part of deciphering of enciphered message, and invented by Solomon Kullback, but only to the first three letters of the word Chiffrierabteilung (English:cipher department). From the early 1930s to the start of the war, Germany (Weimar Republic), has a good understanding, and indeed a lead in