semiangle of beam convergence

apriori arrow's impossibility theorem artificial obstruction blown core bqe centrophenoxines coco(a)nut (active) charcoal collecting header count-class sentence dieffenbach musculus adductor halluces overpower valve polycrases polyposis quincuncial aestivation radial pitch variation safia stevened tuberculosis of digestive system wallace-effect(grant 1966)