Fresh topics for light-minded scientists (6)
I believe the answer is:
optics
'light-minded scientists' is the definition.
Although both the answer and definition are plural nouns, I cannot see how they can define each other.
'fresh topics' is the wordplay.
'fresh' is an anagram indicator.
'topics' is an anagram of 'OPTICS'.
'for' is the link.
Can you help me to learn more?
(Other definitions for optics that I've seen before include "The scientific study of light and vision" , "Devices to measure out alcohol" , "Science of light" , "Science of vision/light" , "Devices attached to bottles to measure out spirits" .)