Spirit of Michael Faraday (3)

I believe the answer is:

'spirit' is the definition.
(magical creature)

'of michael faraday' is the wordplay.
'of' indicates a hidden word.
'ELF' is hidden in the letters of 'michael faraday'.

(Other definitions for elf that I've seen before include "Magical being" , "spirit" , "Mischievous youngster" , "Folk tale creature" , "Mischief-maker" .)

I've seen this clue in the Evening Standard.

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