The analysis of atmospheric conditions, particularly moisture in the air.

Nonglossy paint with a relatively high absorptance.

A single photovoltaic device.

The tank of a water heater.

The amount of money required to secure a specified cash flow at a future date at a specified return.

An energy band in a semiconductor in which electrons can move freely in a solid, producing a net transport of charge.

A curve that displays load values on the horizontal axis in descending order of magnitude against the percent of time (on the vertical axis) that the load values are exceeded.

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.

The resistance between metallic contacts and the semiconductor.

A commmon term refering to an electricity transmission and distribution system.

A popular term used to describe the heating effect due to the trapping of long wave (length) radiation by greenhouse gases produced from natural and human sources.

A term used to describe a technologically advanced window system that contains glazing that can change or switch its optical qualities when a low voltage electrical signal is applied to it, or in response to changes in heat or light.

A current carrier, either an electron or a hole, that is in the minority in a specific layer of a semiconductor material; the diffusion of minority carriers under the action of the cell junction voltage is the current in a photovoltaic device.

Solar radiation reflected from the ground onto a solar collector.

The transfer of heat by means of air currents.

A type of combustion heating system in which combustion air is drawn directly from outside and the products of combustion are vented directly outside. These features are beneficial in tight, energy-efficient homes because they will not depressurize a home ...

A measure of the moisture content of air; may be expressed as absolute, mixing ratio, saturation deficit, relative, or specific.

A chemical element (impurity) added in small amounts to an otherwise pure semiconductor material to modify the electrical properties of the material. An n-dopant introduces more electrons. A p-dopant creates electron vacancies (holes).

Ethanol.

A building element that provides protection against the sun, wind, and precipitation.