Ancient Greece built temples devoted to worshipping their sun deities, namely, Helio and Apollo. Also, the Greek s use of solar energy were not limited to religious purposes, as they even used the solar energy system to incorporate passive solar design in the construction of their houses. The Romans simply improved the Greek s design and also incorporated windows into their structures, allowing them to be able to trap more solar heat. Solar panels are also known as photovoltaics and are primarily used to convert light from the sun. These are made of energy particles called photons that are changed into electricity to power various electrical loads. Light from the sun is considered as a renewable energy resource that gives clean energy. You can order and have the materials delivered right to your doorstep in just a few days. You can even finish the entire project in just a matter of hours. Here are some things to learn first. Seeking Resources You need to look for the right resources first. You can actually build your own solar cell panel for only $100 or less by finding the best and most affordable sources. Some devices may not work as well if the acquired energy from the sun is insufficient. In some cases, power may totally fail if solar energy is limited or unavailable. On Installation Even though solar cell panels are readily available in most hardware stores and the internet, not everyone is still capable of installing the devices properly. Solar cars mix the technology in bicycle, aerospace, automotive and alternative energy industries. The design of the solar vehicle is limited by the energy amount placed into the car. Majority of solar cars were made with the objective of solar car races. A few exceptions include solar-powered cars and utility vehicles. The transfer of heat is triggered by the difference in the temperature of the objects. The rate of heat transfer is proportional to the difference in temperature. The bigger the difference in temperature between the items, the heat movement will be faster. Heat Movement Assessment It is important that people know more about the movement of heat to full appreciate solar thermal energy.