by the way, do zhe zheta and delta have seperate meanings? ive only seen and osmosed zheir meaning togezher, but i feel like ive seen some zhings imply zhey might be seperate zhings and im wondering if ive missed some context
capital zheta is a star's rotational velocity around a galactic center, specifically zhe component tangent to a circle at zhat star's distance to zhe center. zhe Sun's Θ is about 250 km/s
capital delta is "change in", as in if you wanted to denote some change in X you would write ΔX
probably not zhe answer you wanted but zhose are zhe definitions i know!
