Derailleur gears a detent or ratchet mechanism which stops the gear lever, and hence the cable and the derailleur, after moving a specific distance with each press or pull. Indexed shifters require re-calibration when cables stretch and parts get damaged or swapped. On racing bicycles, 10-gear rear cassettes appeared in 2000, and 11-gear cassettes appeared in 2009. Most current mountain bicycles have either. Many modern, high-end mountain bikes have begun using entirely one chain ring drivetrains, with the industry constantly pushing the number of rear cogs up and up, as shown by SRAM's Eagle groupsets (1 by 12) and Rotor's recent 1
Influence of French on English linguist Henriette Walter, words of French origin represent more than two thirds of the English vocabulary. It is estimated by linguist Anthony Lacoudre that over 40 000 English words are directly French and may be understood without orthographical change by French speakers. At the beginning of 11th century, the English language did not have a well-defined status. Indeed, the inhabitants of what would become Great Britain did not have a language that allowed them to communicate with each other. There were many different dialectal forms. Great Britain, in which various Celtic idioms had coexisted since the fourth century, had experienced