7 skylights...........Some's cafeteria.............a visible meridian down the long side.............an invisible one formed by the exit sign............to the West wall.........perpendicular to the visible one...........cutting the sky lights.........into 5 and 2......
www.bbc.co.uk/schools/scienceclips/ages/7_8/light_shadows.shtml
An interactive light show in which children aged 7-8 can experiment with creating and changingshadows.
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