For the year 1985-1986 Tom, his wife and young family, moved to Germany where Tom held a Research Fellowship from the Alexander von Humboldt Foundation to work at the University of T�bingen Eye Hospital focusing on isoluminance ( stimuli with the same luminance but differences in other visual properties ) and its effects on the perception of form and motion.
22.
Actor Sean Astin also noted in the DVD commentary that while the prop " lembas " had to be technically edible ( because actors eat it on screen ), the main focus of the recipe's design was on the visual properties that the resulting bread cakes would have, i . e . how stiff it was and how easily it crumbled.
