Optical fibres are used to transmit light from one place to the other along curved path in a more effective manner. The optical fibres consist of thousands of strands of a very fine quality glass or quartz of refractive index about 1.7 or so. The thickness of a strand is about 10-6cm. The strands are coated with a layer of some material of lower refractive index (about 1.5). The ends of the strands are polished and clamped firmly after aligning them carefully. When light is incident at a small angle at one end, it gets refracted into the strands (or fibres) and gets incident on the interface of the fibres and the coating. The angle of incidence being greater than the critical angle, the ray of light undergoes total internal reflections. It suffers internal reflection again and again. If we consider fibre in circular shape (fibre image is not in circular shape) and incident light at the angle greater than critical angle from one part of that fibre, light undergoes total internal reflections without being absorbed, so we can have the same light circulating all the time. 1.Suppose if we have the planning of home to be made in the same manner of the circle shaped fibre with same material as that of quartz. We can have same light circulating all over once incident. So, if this happens we can have light through out the house with out light being switched on for all the time. Is this possible? 2.I know there might be some difficulties which might arise, if so what are they? What can be done in order to over come those?