11.30 Images: The Third Dimension
An ordinary photographic Image may look 3-dimenslonal but it isn't; a laser-produced hologram is a 3-dimensional image but doesn't look like it. This programme shows how the special characteristics of laser light makes it possible to record all three dimensions on a 2-dimensional holographic plate.
11.55 The Language of Advancement?
The schools in Gwynedd are extending their bilingual policy. The resurgence of Welsh culture has had some effect in bringing this about.