Greek symbol for pseudorapidity (3)
I believe the answer is:
eta
(Other definitions for eta that I've seen before include "Militants" , "Letter from abroad" , "Seventh Greek letter" , "Greek character?" , "Greek letter - time due (abbr)" .)
I believe the answer is:
eta
(Other definitions for eta that I've seen before include "Militants" , "Letter from abroad" , "Seventh Greek letter" , "Greek character?" , "Greek letter - time due (abbr)" .)