Power to the People. But in What Units?  

Oleh:

Repas, Robert

Jenis: Article from Bulletin/Magazine - ilmiah internasional
Dalam koleksi: Machine Design (Soft Copy ada dalam http://search.proquest.com/) vol. 83 no. 13 (Aug. 2010), page 50-51.
Topik: Alternative Energy Sources; Kinetics; Density; Solar Energy

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: MM44 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Discussions of alternate energy sources tend to in takenly use the terms interchangeably. While power and energy are related, each has a specific meaning. Readers may recall from basic physics that energy is typically defined as the ability to do work, and that two types of energy exist potential and kinetic. Potential energy is that which is stored, ready to do work. Kinetic energy, however, is energy of motion. In many situations, potential energy is converted into kinetic energy to accomplish a task. Wind, waves, and solar are all forms of kinetic-energy sources. Their energy comes from some form of motion whether it's the blowing wind, flowing water, or streaming particles of light. These systems use special devices called transducers or converters to change the kinetic energy from one form to another. The energy density of a wind generator takes into account the amount of land needed to erect several generators side by side.

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