German physicist to succeed bottling hydrogen in the works (10)
I believe the answer is:
fahrenheit
'german physicist' is the definition.
(physicist and inventor Daniel Gabriel Fahrenheit)
'succeed bottling hydrogen in the works' is the wordplay.
'succeed' becomes 'fare' (fare can mean to progress or succeed).
'bottling' is an insertion indicator (bottling is a kind of containing).
'hydrogen' becomes 'h' (H is the chemical symbol for hydrogen).
'works' is an anagram indicator (work can mean to twist or convulse).
'fare' going around 'h' is 'fahre'.
'in'+'the'='inthe'
'inthe' with letters rearranged gives 'nheit'.
'fahre'+'nheit'='FAHRENHEIT'
'to' is the link.
(Other definitions for fahrenheit that I've seen before include "Finer heath (anag.)" , "Man of some scale" , "Measure of warmth" , "In which one can express warmth" , "Physicist; temperature scale" .)