Hannah is hosting the next monthly meeting of the UK Colour Group at Pembroke College, Oxford, on Wednesday, 13th March. The meeting will focus on the colour cues for material properties, drawing on experience from visual psychophysics, human neuropsychology, colour measurement, computer vision and the perception and representation of material properties in art. Perception of colour is not something that Grosseteste addressed directly in the De colore, but he gets a lot closer to the perception of different colours in different rainbows in the De iride. Sam Sargeant will be attending from the Ordered Universe/Durham Grosseteste Project research group (and having some time in the lovely Oxford libraries on matters Grossetestian and medieval scientific).
Details of the meeting and registration are here: http://www.colour.org.uk/meetingMarch13.html