| 摘要 |
Device comprises a mirror mounted in gymbal bearings enabling it to be rotated to point directly at the sun at all times of the day throughout the year. The mirror is curved in one plane only and focusses the radiation on a collector which runs the length of the mirror along its non-curved axis and is located at the focal point. - The curved surface of the mirror is in three sections, each having a different centre of curvature. That of the centre section is located on the axis of symmetry while those of the two outer sections are offset to the opposite sides of the bisecting axis, enabling radiation to be focussed on to the sides of the central collector which is shaped to collect energy focussed on to it from the three sections of the minor.(0/7)
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