Marino Ghetaldi
A mathematician and physicist who studied in Italy , England and Belgium , his best results are mainly in physics , especially optics , and mathematics . 
<triplet> mathematician <subj> mathematics <obj> field of this occupation <triplet> physicist <subj> physics <obj> field of this occupation <triplet> physics <subj> physicist <obj> practiced by <triplet> optics <subj> physics <obj> part of <triplet> mathematics <subj> mathematician <obj> practiced by