The trouble with light
Physicists ideas about light are difficult
to teach to novices for two reasons.
Sighted people have lots of experience with light.
As a result, they have strong associations
and interpretations that create barriers to learning.
Physicists’ use a variety of models (rays, waves,
photons), sometimes hybridizing them in ways
that are difficult for students to make sense of.
There has been a lot of PER concerning learning
about light at a variety of levels.