<p>&Tau;&omicron; &sigma;&epsilon;&nu;ά&rho;&iota;&omicron; &alpha;&nu;&alpha;&phi;έ&rho;&epsilon;&tau;&alpha;&iota; &sigma;&tau;&omicron; &eta;&lambda;&epsilon;&kappa;&tau;&rho;&iota;&kappa;ό &pi;&epsilon;&delta;ί&omicron;. &Sigma;&upsilon;&gamma;&kappa;&epsilon;&kappa;&rho;&iota;&mu;έ&nu;&alpha; &alpha;&phi;&omicron;&rho;ά &sigma;&tau;&omicron; &eta;&lambda;&epsilon;&kappa;&tau;&rho;&omicron;&sigma;&tau;&alpha;&tau;&iota;&kappa;ό &pi;&epsilon;&delta;ί&omicron; Coulomb, &tau;&omicron; &phi;&upsilon;&sigma;&iota;&kappa;ό &mu;έ&gamma;&epsilon;&theta;&omicron;&sigmaf; &tau;&eta;&sigmaf; έ&nu;&tau;&alpha;&sigma;&eta;&sigmaf; &tau;&omicron;&upsilon; &kappa;&alpha;&iota; &tau;&iota;&sigmaf; &delta;&upsilon;&nu;&alpha;&mu;&iota;&kappa;έ&sigmaf; &gamma;&rho;&alpha;&mu;&mu;έ&sigmaf;, &pi;&omicron;&upsilon; &alpha;&nu;&alpha;&pi;&alpha;&rho;&iota;&sigma;&tau;&omicron;ύ&nu; &tau;&omicron; &eta;&lambda;&epsilon;&kappa;&tau;&rho;&iota;&kappa;ό &pi;&epsilon;&delta;ί&omicron; (<a href="http://ebooks.edu.gr/ebooks/v/html/8547/2682/Fysiki_B-Lykeiou-GP_html-empl/index1_2.html" style="color:blue; text-decoration:underline">http://ebooks.edu.gr/ebooks/v/html/8547/2682/Fysiki_B-Lykeiou-GP_html-empl/index1_2.html</a>).</p> <p>&Eta; &pi;&alpha;&iota;&delta;&alpha;&gamma;&omega;&gamma;&iota;&kappa;ή &pi;&rho;&omicron;&sigma;έ&gamma;&gamma;&iota;&sigma;&eta; &epsilon;ί&nu;&alpha;&iota; &gamma;&nu;&omega;&sigma;&tau;&iota;&kappa;ή &kappa;&alpha;&iota; &tau;&omicron; &delta;&iota;&delta;&alpha;&kappa;&tau;&iota;&kappa;ό &mu;&omicron;&nu;&tau;έ&lambda;&omicron; &eta; &delta;&iota;&epsilon;&rho;&epsilon;&upsilon;&nu;&eta;&tau;&iota;&kappa;ή &mu;ά&theta;&eta;&sigma;&eta;. &Tau;&omicron; &theta;έ&mu;&alpha; &mu;&epsilon;&lambda;&epsilon;&tau;ά&tau;&alpha;&iota; &mu;έ&sigma;&omega; &epsilon;&iota;&kappa;&omicron;&nu;&iota;&kappa;&omicron;ύ &pi;&epsilon;&iota;&rho;ά&mu;&alpha;&tau;&omicron;&sigmaf;. &Gamma;&iota;&alpha; &tau;&omicron; &sigma;&kappa;&omicron;&pi;ό &alpha;&upsilon;&tau;ό &alpha;&xi;&iota;&omicron;&pi;&omicron;&iota;&epsilon;ί&tau;&alpha;&iota; &tau;&omicron; &psi;&eta;&phi;&iota;&alpha;&kappa;ό &mu;&alpha;&theta;&eta;&sigma;&iota;&alpha;&kappa;ό &alpha;&nu;&tau;&iota;&kappa;&epsilon;ί&mu;&epsilon;&nu;&omicron; <a href="http://photodentro.edu.gr/v/item/ds/8521/1621" style="color:blue; text-decoration:underline">http://photodentro.edu.gr/v/item/ds/8521/1621</a> &laquo;&eta;&lambda;&epsilon;&kappa;&tau;&rho;&omicron;&sigma;&tau;&alpha;&tau;&iota;&kappa;ό &pi;&epsilon;&delta;ί&omicron;&raquo; &alpha;&pi;ό &tau;&omicron; &phi;&omega;&tau;ό&delta;&epsilon;&nu;&tau;&rho;&omicron; &pi;&omicron;&upsilon; &alpha;&pi;&omicron;&tau;&epsilon;&lambda;&epsilon;ί &mu;&iota;&alpha; &delta;&upsilon;&nu;&alpha;&mu;&iota;&kappa;ή &pi;&rho;&omicron;&sigma;&omicron;&mu;&omicron;ί&omega;&sigma;&eta;.</p>