: Can ad ian ▁column ists ▁Category : Can ad ian ▁food ▁writers ▁Category : Can ad ian ▁travel ▁writers ▁Category : J ew ish ▁Canadian ▁writers ▁Category : L iving ▁people ▁Category : W rit ers ▁from ▁Montreal ▁Category : Year ▁of ▁birth ▁missing ▁( l iving ▁people ) ▁Jacob <0x0A> </s> ▁The ▁York town ▁class ▁may ▁refer ▁to : ▁▁ ▁, ▁a ▁class ▁of ▁three ▁steel - h ul led ▁gun bo ats ▁of ▁the ▁United ▁States ▁Navy ▁in ▁the ▁late ▁ 1 9 th ▁and ▁early ▁ 2 0 th ▁centuries ▁ ▁, ▁a ▁class ▁of ▁three ▁aircraft ▁carri ers ▁active ▁before ▁and ▁during ▁World ▁War ▁II <0x0A> </s> ▁The ▁B ever ly ▁C lock ▁is ▁a ▁clock ▁situated ▁in ▁the ▁ 3 rd ▁floor ▁lift ▁fo yer ▁of ▁the ▁Department ▁of ▁Physics ▁at ▁the ▁University ▁of ▁O tag o , ▁Dun ed in , ▁New ▁Zealand . ▁The ▁clock ▁is ▁still ▁running ▁despite ▁never ▁having ▁been ▁manually ▁w ound ▁since ▁its ▁construction ▁in ▁ 1 8 6 4 ▁by ▁Arthur ▁B ever ly . ▁ ▁Operation ▁The ▁clock ' s ▁mechanism ▁is ▁driven ▁by ▁variations ▁in ▁atmos pher ic ▁pressure , ▁and ▁by ▁daily ▁temperature ▁variations ; ▁of ▁the ▁two , ▁temperature ▁variations ▁are ▁more ▁important . ▁Either ▁causes ▁the ▁air ▁in ▁a ▁one ▁cub ic - foot ▁( 2 8 ▁lit re ) ▁air - t ight ▁box ▁to ▁expand ▁or ▁contract , ▁which ▁push es ▁on ▁a ▁dia ph rag m . ▁A ▁temperature ▁variation ▁of ▁six