33a Form of electro-magnetic radiation, around 400 - 740 nm [5]
34a "This is the way to kill a wife with kindness; And thus I'll curb her mad and headstrong humour. He that knows better than to tame a -----..." William Shakespeare. [5]
6d Spell of duty in military service [4]
11d The largest species of penguin, depicted in the 2005 documentary written and directed by Luc Jacquet [7]