|
The following outline is provided as an overview of and topical guide to solar energy: Solar energy – radiant light and heat from the sun. It has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar energy technologies include solar heating, solar photovoltaics, solar thermal electricity and solar architecture, which can make considerable contributions to solving some of the most urgent problems the world now faces. == What ''type'' of thing is solar energy? == Solar energy can be described as all of the following: * Energy – an indirectly observed quantity, often understood as the ability a physical system has to do work on other physical systems. * * Renewable energy – energy which comes from natural resources which are naturally replenished. * Natural resource – materials and components (something that can be used) that can be found within the environment. Every man-made product is composed of natural resources (at its fundamental level). A natural resource may exist as a separate entity such as fresh water, and air, as well as a living organism such as a fish, or it may exist in an alternate form which must be processed to obtain the resource such as metal ores, oil, and most forms of energy. * * Renewable resource – natural resource with the ability to reproduce through biological or natural processes and are replenished with the passage of time. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Outline of solar energy」の詳細全文を読む スポンサード リンク
|