In developing photovoltaic (PV) technology for widespread adoption, it is crucial to provide PV power with comparable prices to traditional technologies. A method to lower the cost of energy delivered by a PV system is to increase power output. While PV panel costs account for as much as 50% of system costs [1] balance of system (BOS) is among the other major costs associated with PV technologies. Because mounting, wiring, and installation tend to scale with system area, higher efficiency devices will lower these BOS costs. Under this concept, our research group seeks to provide opportunities for lower cost power using flat-panel PV modules augmented through the addition of low cost solar mirrors. Since mirror augmentation costs ~10% of module cost, and increased irradiance scales almost linearly with power production, in order to harvest more incident solar irradiance, an optimized configuration design between flat-panel module and mirror are necessary in this fixed (non-tracked) mirror-augmented photovoltaic (MAPV) system. As with many renewable energy technologies, PV energy generation requires durability of systems, components, and materials for 25 years in order to be economically viable. In order to ensure investors and early adopters that MAPV can fulfill expected service lifetimes of 25+ years durability studies have been performed showing the effects of artificial aging in terms of angle distribution of reflected light and reflectance loss.

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N account of a series of experiments performed hy one of us on the magnetic properties of certain impure alloys of iron and aluminium is given in the Philosophical ~[agazine for January 1900. As the results obtained from these experiments were of a very interesting character, the authors Communicated by the Physical Society : read Jane 8, 1900.

I. TheMagnetic Properties of Alloys of I v o n and Alumi-n~um.--PART I. @y S. W. RICHARDSON, D.Sc., late 1851 Exhibition Research Scholar ; Lecturer aiid Demonstrator in Physics at the University College, Nottingham *. CONTENTB. 5 11. A discussion of the method used for the magnetic measurements, 5 I. The Introdnction. and a description of the apparatus. 5 111. An account of the method used for determining the temperature.IV. An account of the methods used for varying the temperature.5 V. The data obtained, and some remarks upon them. I. THE INTRODUCTION.THE experiments made by Hopkinsont on alloys of iron and nickel led to such striking results that the author thought that experiments of the same nature on other alloys of iron might contribute some interesting facts to our knowledge of Magnetism. Accordingly a series of experiments were undertaken on some alloys of iron and aluminium. An account of the earlier experiments on these alloys, performed at the Cavendish Laboratory during the years 1897 and 1898,

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