Problem 9. Film development

Statement

The amount of time required to develop a sample of black-and-white photographic film depends on various factors and may be unknown if the film is expired. Try various methods to measure the optimum development time for such a film using a developer of your choice. What methods are fast enough to test a film sample provided by your opponent in the Science Fight?

Statistics

Number of reports: 1

Number of rejections: 2

Average Reporter Grade: 21.1

Average Opponent Grade: 14.4

Average Reviewer Grade: 7.2