. P . ▁thing ▁back ▁to ▁them , ▁and ▁I ▁told ▁them ▁they ▁could ▁put ▁it ▁where ▁the ▁mon key ▁put ▁the ▁n uts ! ▁ ▁In ▁later ▁years ▁the ▁actual ▁production ▁of ▁aircraft ▁was ▁the ▁responsibility ▁of ▁the ▁Ministry ▁of ▁A ircraft ▁Production ▁( 1 9 4 0 – 4 6 ), ▁the ▁Ministry ▁of ▁Supp ly ▁( 1 9 4 6 – 5 9 ), ▁the ▁Ministry ▁of ▁A viation ▁( 1 9 5 9 – 6 7 ) ▁and ▁finally ▁the ▁Ministry ▁of ▁Technology ▁( 1 9 6 7 – 7 0 ). ▁ ▁We ather ▁forec ast ing ▁The ▁Air ▁Ministry ▁was ▁responsible ▁for ▁weather ▁forec ast ing ▁over ▁the ▁UK , ▁from ▁ 1 9 1 9 ▁it ▁being ▁the ▁government ▁department ▁responsible ▁for ▁the ▁Meteor ological ▁Office . ▁ ▁As ▁a ▁result ▁of ▁the ▁need ▁for ▁weather ▁information ▁for ▁av iation , ▁the ▁Meteor ological ▁Office ▁located ▁many ▁of ▁its ▁observation ▁and ▁data ▁collection ▁points ▁on ▁R AF ▁stations . ▁ ▁World ▁War ▁II ▁technology ▁In ▁the ▁ 1 9 3 0 s , ▁the ▁Air ▁Ministry ▁commission ed ▁a ▁scientific ▁study ▁of ▁propag ating ▁elect romagnet ic ▁energy ▁which ▁concluded ▁that ▁a ▁death ▁ray ▁was ▁imp ract ical ▁but ▁detection ▁of ▁aircraft ▁appeared ▁feas ible . ▁Robert ▁Watson - W att ▁demonstrated ▁a ▁working ▁prototype ▁and ▁pat ented ▁the ▁device ▁in ▁ 1 9 3 5 ▁( B rit ish ▁Pat ent ▁GB 5 9 3 0 1 7 ). ▁The ▁device ▁served ▁as ▁the ▁base