Apr 28, 2018 · vacuum: 725,895 matches; earliest confirmed match from the Sydney Gazette and New South Wales Advertiser (July 10, 1803): The walls of the New Bridge are already raised nearly five feet, and are 24 feet asunder, which vacuum will be filled by a solid mound ; and the span of the Arch likewise measures 24 feet.

Jun 26, 2011 · A simple vacuum tube, a triode, with its heated cathode. Source. As expected with an insulator, electrons cannot move in vacuum, there is no electric current, the impatient electrons must stay on their wire! However, in a vacuum tube there is a way to transfer more energy to the heated electrons packed on the cathode.

For this specific scenario, the usage of "opposite to" and "opposite" is indistinguishable in resulting meaning.

I have a story about the "on the bus". I read somewhere (or someone explained to me) that back in the day buses were open, so that one wasn't inside the bus per se, but rather on the top of the bus.

Dec 13, 2011 · 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.

Dec 8, 2013 · Short Answer: Quietest sounds better to me, but both are grammatically correct. Long Answer: For comparatives and superlatives (-er and -est, respectively) forms of words, always use most for words with words for three or more syllables.

Sep 18, 2010 · I only relate my own experiences in the matter. Your observation that the objects a not necessarily unknown is valid, hence my frequent use of the weasel-word 'tends'. I agree with your observation about the vacuum cleaner, although I would tend to think in that case the use of "she" would tend to lean toward the pejorative. –

Mar 28, 2018 · This might be metaphorical if alluding to the way an electronic circuit is wired to perform different things like making a light flash or turning a motor. Here is a picture of ENIAC, an old computer in the 1940s. Notice the cables (for the record, I don't know if those wire-looking things are cables or vacuum tubes).

Oct 13, 2021 · The essence of flying is that there is a gas present (usually, air) - you cannot fly in a vacuum. Air (uncountable) is therefore used in the achievement of flight. – Greybeard

Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.