- practical.left
- medium: pinhole photograph positive print on Kodak Endura
- camera: pinhole camera made from a 25 litre water-barrel
- exposure: 3 hours on 12” x 16” bw Ilford paper during a complete practical session in Teaching Lab 2
- collaboration: Dr. Richard Williamson,Science Support Technicians, undergraduate students
- Teaching Laboratory: This was a first year undergraduate biochemistry practical class. Students were asked to determine the number of cysteine residues in a sample of ovalbumin (the major protein found in hen egg white). Estimates were made using an assay that changes colour in the presence of cysteine.
- Dr. Richard Williamson Senior Lecturer in Protein Biochemistry