An oblong crystal the size of a cigarette packet was next to a pair of dividers - suggesting it was part of the navigational equipment.
BBC: 'Viking sunstone' found in shipwreck
Richard Grasso, Mr Thain's predecessor, who was booted out after a scandal over the size of his pay packet, did not manage this in his long tenure.
ECONOMIST: A transformative deal for the New York Stock Exchange
They are called quantum because it takes a packet of energy of a very specific size - a quantum - to create the states.
BBC: Neutrons could test Newton's gravity and string theory
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