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Who changed the way vacumn was spelled 40 years ago? According to the Online Etymological Dictionary, vacuum entered English in the 1540s directly from Latin as the substantivized, neuter form of the adjective vacuus The earliest use was as an abstract, non-count noun denoting the emptiness of space, later any void or empty space, for which one could use the Latin plural vacua or simply tack on
pronunciation - Why is vacuum pronounced [ˈvæ. kjuːm] and not [ˈvæ . . . +1 It seems that vacuum is the odd word out when placed in a lineup with (for example) continuum, individuum, menstruum, and residuum I don't know why the -uum in vacuum came to be pronounced differently from the -uum in the others, but to judge from the pronunciation offered in John Walker's A Critical Pronouncing Dictionary, and Expositor of the English Language (1807), 'twas not always thus
Can I call a vacuum cleaner cleaner a vacuum cleaner? If a 'vacuum cleaner cleaner' is a machine for cleaning vacuum cleaners, then the person who cleans the vacuum cleaner cleaner would be a 'vacuum cleaner cleaner cleaner'
differences - English Language Usage Stack Exchange Perfect vacuum does not exist - there will always be some energy, some particles manifesting themselves spontaneously from quantum uncertainty, but generally lack of matter, including air is considered vacuum
Electronic vs. electric - English Language Usage Stack Exchange The vacuum tube was soon replaced by semi-conductor materials The technology was named solid state electronics because, semi-conductor materials, like vacuum, are actually insulators that can conduct more or less when activated
Where is the root morpheme in Modern English evacuate and vacuum? Clearly they are related through Latin, from e- and vacare (out of and to empty) and from vacuus (empty), and in Latin the shared morpheme is vac- More interesting may be the relationships with vain, vast and waste which have similar origins in Latin or proto-Indo-European, but which have more specific meanings in modern English
Gap, void or vacuum? - English Language Usage Stack Exchange Considering their primary meanings, vacuum is used more often in a scientific context, in which case it means space completely or partially absent of any matter air It is a scientific term, while void can be used non-technically in a more abstract sense, but it can also be used when talking about empty space in a non-scientific way
What does programming in a vacuum mean? - English Language Usage . . . A perfect vacuum would be one with no particles in it at all, which is impossible to achieve in practice Physicists often discuss ideal test results that would occur in a perfect vacuum, which they simply call "vacuum" or "free space", and use the term "partial vacuum" to refer to real vacuum
Difference in meaning in insulation vs. isolation? [closed] Electrical isolation amounts to using an air gap (or vacuum) as an insulating (nonconducting) medium; like most electrical insulators, air has a breakdown voltage, typically about 1000V mm, while the breakdown voltage in partial vacuum may be substantially less