I head to town on tail of oddly eccentric ruler (8,7)

I believe the answer is:

electric current

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'i head' is the definition.
The definition and answer can be both types of natural phenomena as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'town on tail of oddly eccentric ruler' is the wordplay.
'town' becomes 't' (abbreviation for town).
'on tail of' means one lot of letters go next to another (to be on the tail of someone is to follow them).
'oddly' indicates an anagram.
'eccentric'+'ruler'='eccentricruler'
'eccentricruler' is an anagram of 'electriccurren'.
't' put after 'electriccurren' is 'ELECTRIC CURRENT'.

'to' acts as a link.

Can you help me to learn more?

(Another definition for electric current that I've seen is " I".)

I've seen this clue in The Times and The Sunday Times.

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