Zusammenfassung
Learning vector calculus techniques is one of the major missions to be
accomplished by physics undergraduates. However, beginners report various
difficulties dealing with the index notation due to its bulkiness. Meanwhile,
there have been graphical notations for tensor algebra that are intuitive and
effective in calculations and can serve as a quick mnemonic for algebraic
identities. Although they have been introduced and applied in vector algebra in
the educational context, to the best of our knowledge, there have been no
publications that employ the graphical notation to three-dimensional Euclidean
vector calculus, involving differentiation and integration of vector
fields. Aiming for physics students and educators, we introduce such
``graphical vector calculus,'' demonstrate its pedagogical advantages, and
provide enough exercises containing both purely mathematical identities and
practical calculations in physics. The graphical notation can readily be
utilized in the educational environment to not only lower the barriers in
learning and practicing vector calculus but also make students interested and
self-motivated to manipulate the vector calculus syntax and heuristically
comprehend the language of tensors by themselves.
Nutzer