Solar Cell

Essay specific features

 

Issue:

Science

 

Written by:

Thomas B

 

Date added:

March 1, 2015

 

Level:

University

 

Grade:

A

 

No of pages / words:

5 / 1201

 

Was viewed:

2244 times

 

Rating of current essay:

 
Essay content:

Photovoltaic cells work effectively even in cloudy weather and unlike solar heaters, are more efficient at low temperatures. They do their job silently and there are no moving parts to wear out. It is no wonder that one marvels on how such a device would function. To understand how a solar cell works, it is necessary to go back to some basic atomic concepts...
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In the simplest model of the atom, electrons orbit a central nucleus, composed of protons and neutrons. each electron carries one negative charge and each proton one positive charge. Neutrons carry no charge. Every atom has the same number of electrons as there are protons, so, on the whole, it is electrically neutral...
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