what show was the first to air on that network?
Opening of the BBC Television Service
BBC Television
 The first programme broadcast – and thus the first ever, on a dedicated TV channel – was "Opening of the BBC Television Service" at 15:00. 
what is "the quatermass experiment"? A British science fiction serial when was it aired? Summer of 1953 name a few characters from it? Professor Bernard Quatermass, Victor Carroon, Paterson and Briscoe on which network was it aired? BBC Television did it ever have to close its broadcast during any war? Yes. On 1 September 1939, two days before Britain declared war on Germany
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BBC Television [SEP] Early years (before 1939)
The first programme broadcast – and thus the first ever, on a dedicated TV channel – was "Opening of the BBC Television Service" at 15:00. The first major outside broadcast was the coronation of King George VI and Queen Elizabeth in May 1937.