A rotating data transmission device for transmitting data from a data source to a data sink between a rotating part and a stationary part comprises a transmitting conductor arrangement which is fed from a transmitter means, and also a receiver means which taps signals from the transmitting conductor arrangement with the aid of a receiving coupler arrangement. Signals corresponding to the detected muscle and eye movements are used to control an animated character to exhibit the same movements performed by a performer. A first polymer film underlies patterned metal foil. Each pinion is enclosed in a pocket in the casing, the pockets intersecting to allow engagement of the pinions with one another. By slicing the carrot in the longitudinal direction so as to pass through the core portion, a larger area of the core portion towards which the presence of nitrate ions is biased can be exposed, the contact area between the core portion and the blanching water can be increased and more nitrate ions can be eluted and removed at blanching time.