Book du jour - Black Books

Field potential is a term from physics and neurophysiology; it refers to the difference in electrical charge across a gap.

The book opens (with some difficulty) to reveal a shiny surface with something metallic piercing it -

 The reader/viewer - who is likely to be a Camberwell student - sees their reflection  -

and on the other side, a notebook used by tutors for recording a student's progress at Camberwell College of Arts and Crafts (as it once was known), which is also pierced by metal -

The metal - copper wire - is stitched through the empty pages of the book, and a needle dangles from the end -

When the book is closed, do electrons jump the gap and make a current flow? Do creative sparks fly?