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| Photovoltaic device
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A solid-state electrical device that converts light directly into direct current electricity of voltage-current characteristics that are a function of the characteristics of the light source and the materials in and design of the device. Solar photovoltaic devices are made of various semi-conductor materials including silicon, cadmium sulfide, cadmium telluride, and gallium arsenide, and in single crystalline, multi-crystalline, or amorphous forms. |
| Photovoltaic-thermal (pv/t) systems
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A solar energy system that produces electricity with a PV module, and collects thermal energy from the module for heating. There are no commercially available systems available (as of 11/97). |
| Phyllode
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A leaf stalk expanded to look like and act like a leaf. |
| Physical damage insurance
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Insurance coverage for any risk that can cause physical damage to the insured item. |
| Physical depreciation or deterioration
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Decline in value of property due to all causes of age and action of the elements. |
| Physical vapor deposition
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A method of depositing thin semiconductor photovoltaic) films. With this method, physical processes, such as thermal evaporation or bombardment of ions, are used to deposit elemental semiconductor material on a substrate. |
| Physical vapor deposition (pvd)
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A modern plating process used mostly with polished brass or gold finishes on faucets. Vaporized zirconium reacts with nitrogen and other gases to form a very durable surface, which will not tarnish or discolor. |
| Piano finish
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Varnish or lacquer highly glossed finish. |
| Piano hinge
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Also called a continuous hinge, this narrow pin hinge runs along the length of the two sections to be joined, as in cabinets where the hinge load is spread over a large area. |
| Pick and dip
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Fast and efficient method of laying brick where a brick is picked up with one hand while the other hand simultaneously trowels up enough mortar to set the brick. |
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