Other
U.s. Department of Energy: Photovoltaics
This site has an overview of PV technology, impact, system application and design. Information is provided on how to select the best solar system for various needs.
![State Energy Conservation Office: Learning About Photovoltaic Systems [Pdf] Handout](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "State Energy Conservation Office: Learning About Photovoltaic Systems [Pdf] Handout")
State Energy Conservation Office-Texas
State Energy Conservation Office: Learning About Photovoltaic Systems [Pdf]
Explains how photovoltaic systems work and how Texas homeowners are using them. Discusses how a homeowner can use solar energy and still be on the electricity grid system.
Georgia State University
Georgia State University: Hyper Physics: Heat Engine Cycle
The heat engine cycle is defined and discussed. So pressure-volume diagrams are introduced and their use in depicting the cycles of a heat engine is demonstrated. Informative graphics are accompanied by reason-filled explanations.