释义 |
bun·sen-kirch·hoff law \-ənˈkirˌkȯf-, -rkˌhȯf-\ noun Usage: usually capitalized B&K Etymology: after Robert Wilhelm Bunsen and Gustav Robert Kirchhoff died 1887 German physicist, its formulators : a statement in spectroscopy: each chemical element has an emission spectrum of bright lines and an absorption spectrum of dark lines which are characteristic of the element |