... , etc. A second generation of electric polymers has also appeared (see below) in, e.g., transistors, light-emitting diodes, lasers with further applications such as in flat television screens, solar cells, etc. Polymers have the potential advantages of low cost and that they can be processed, e.g., as film. We may soon be seeing electroluminescent plastics papered on walls for ... ? Conductivity is defined by Ohm's law: U = R I, (1) where I is the current (in Amperes) through a resistor and U is the drop in potential (in Volts) across it. The proportionality constant R is called the "res...

• Word Count: 6720
• Approx Pages: 27
• Grade Level: High School

... to homogenize the refuse by mixing, it is not possible to maintain a uniform feed quality. The existing automatic systems and control circuits have as their main objective the maintenance of a constant thermal output with good burnout, thereby creating the preconditions for an uniformly high energy production. In order to attain this objective the plant operators must be highly qualified. In spite ... are becoming ever more restrictive. Recent insights on the toxicity of chlorinated organic pollutant emissions have also dictated a change in the objectives of refuse incineration; together...

• Word Count: 4698
• Approx Pages: 19
• Has Bibliography
• Grade Level: High School