These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
Preprints are manuscripts made publicly available before they have been submitted for formal peer review and publication. They might contain new research findings or data. Preprints can be a draft or final version of an author's research but must not have been accepted for publication at the time of submission.
submitted on 05.11.2019 and posted on 13.11.2019by Eric Janusson, Johanne Penafiel, Andrew Macdonald, Shaun MacLean, Irina Paci, J Scott McIndoe
students are often introduced to the concept of atomic orbitals with a
representation of a one-dimensional standing wave. The classic example is the harmonic
frequencies which produce standing waves on a guitar string; a concept which is
easily replicated in class with a length of rope. From here, students are typically exposed to
a more realistic three-dimensional model, which can often be difficult to
visualize. Extrapolation from a
two-dimensional model, such as the vibrational modes of a drumhead, can be used
to convey the standing wave concept to students more easily. We have opted to use Chladni plates which may
be tuned to give a two-dimensional standing wave which serves as a cross-sectional
representation of atomic orbitals. The
demonstration, intended for first year chemistry students, facilitates the
examination of nodal and anti-nodal regions of a Chladni figure which students
can then connect to the concept of quantum mechanical parameters and their
relationship to atomic orbital shape.