The bending of light is a bit concerning at first (10)
I believe the answer is:
refraction
'the bending' is the definition.
(refraction is a kind of bending)
'bit concerning at first' is the wordplay.
'bit' becomes 'fraction' (I have seen 'little bit' mean 'fraction' so perhaps 'bit' could also mean 'fraction').
'concerning' becomes 're' (both can mean on a particular topic).
'at first' means one lot of letters go next to another.
'fraction' put after 're' is 'REFRACTION'.
'of light is a' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution?
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