Derailleur gears operates the lever while pedalling, the change in cable tension moves the chain-guide from side to side, "derailing" the chain onto different sprockets. For more information about the choice of particular gear ratios and sprocket sizes, see Bicycle gearing. "Derailleur" is a French word, spelled "dérailleur" in French, derived from the derailment of a train from its tracks. Its first recorded use was 1930. At least one notable bicycle industry author has attempted to promote the anglicized spelling of "derailer". As of 2013, however, neither Merriam-Webster nor the Oxford English Dictionary has an entry for "derailer". Various derailleur systems were
On the Origin of the "Influencing Machine" in Schizophrenia In any event, there is no question that television does what the schizophrenic fantasy says it does. It places in our minds images of reality which are outside our experience. The pictures come in the form of rays from a box. They cause changes in feeling and ... utter confusion as to what is real and what is not." On the Origin of the "Influencing Machine" in Schizophrenia "On the Origin of the 'Influencing Machine' in Schizophrenia" is an article written by psychoanalyst Viktor Tausk. It was first published in 1919 in the journal "Internationale Zeitschrift für Psychoanalyse" and then,