<p>&Tau;&omicron; &sigma;&epsilon;&nu;ά&rho;&iota;&omicron; &epsilon;ί&nu;&alpha;&iota; &beta;&alpha;&sigma;&iota;&sigma;&mu;έ&nu;&omicron; &sigma;&tau;&omicron; 5&omicron; &kappa;&epsilon;&phi;ά&lambda;&alpha;&iota;&omicron; &tau;&omicron;&upsilon; &sigma;&chi;&omicron;&lambda;&iota;&kappa;&omicron;ύ &epsilon;&gamma;&chi;&epsilon;&iota;&rho;&iota;&delta;ί&omicron;&upsilon; &tau;&eta;&sigmaf; &Phi;&upsilon;&sigma;&iota;&kappa;ή&sigmaf; &tau;&eta;&sigmaf; &Epsilon;&rsquo; &Tau;ά&xi;&eta;&sigmaf; &tau;&omicron;&upsilon; &Delta;&eta;&mu;&omicron;&tau;&iota;&kappa;&omicron;ύ, &pi;&omicron;&upsilon; &alpha;&nu;&alpha;&phi;έ&rho;&epsilon;&tau;&alpha;&iota; &sigma;&tau;&alpha; &phi;&alpha;&iota;&nu;ό&mu;&epsilon;&nu;&alpha; &tau;&eta;&sigmaf; &delta;&iota;&alpha;&sigma;&tau;&omicron;&lambda;ή&sigmaf; &kappa;&alpha;&iota; &tau;&eta;&sigmaf; &sigma;&upsilon;&sigma;&tau;&omicron;&lambda;ή&sigmaf; &tau;&omega;&nu; &sigma;&omega;&mu;ά&tau;&omega;&nu; (&sigma;&tau;&epsilon;&rho;&epsilon;ώ&nu;, &upsilon;&gamma;&rho;ώ&nu; &kappa;&alpha;&iota; &alpha;έ&rho;&iota;&omega;&nu;) &alpha;&nu;ά&lambda;&omicron;&gamma;&alpha; &mu;&epsilon; &tau;&eta; &mu;&epsilon;&tau;&alpha;&beta;&omicron;&lambda;ή &tau;&eta;&sigmaf; &theta;&epsilon;&rho;&mu;&omicron;&kappa;&rho;&alpha;&sigma;ί&alpha;&sigmaf;, (<a href="http://ebooks.edu.gr/ebooks/v/html/8547/2190/Fysika_E-Dimotikou_html-empl/index_5.html" style="color:#0563c1; text-decoration:underline">&Theta;&epsilon;&rho;&mu;ό&tau;&eta;&tau;&alpha; &ndash; ebooks.edu.gr</a>). &Tau;&omicron; &sigma;&upsilon;&gamma;&kappa;&epsilon;&kappa;&rho;&iota;&mu;έ&nu;&omicron; &sigma;&epsilon;&nu;ά&rho;&iota;&omicron; &epsilon;&pi;&iota;&kappa;&epsilon;&nu;&tau;&rho;ώ&nu;&epsilon;&tau;&alpha;&iota; &sigma;&tau;&eta; &delta;&iota;&alpha;&sigma;&tau;&omicron;&lambda;ή &kappa;&alpha;&iota; &sigma;&upsilon;&sigma;&tau;&omicron;&lambda;ή &tau;&omega;&nu; &sigma;&tau;&epsilon;&rho;&epsilon;ώ&nu; &sigma;&omega;&mu;ά&tau;&omega;&nu;.&nbsp;&Tau;&omicron; &theta;έ&mu;&alpha; &mu;&epsilon;&lambda;&epsilon;&tau;ά&tau;&alpha;&iota; &mu;έ&sigma;&omega; &tau;&eta;&sigmaf; &omicron;&pi;&tau;&iota;&kappa;&omicron;&pi;&omicron;ί&eta;&sigma;&eta;&sigmaf; &tau;&omicron;&upsilon; &phi;&alpha;&iota;&nu;&omicron;&mu;έ&nu;&omicron;&upsilon;. &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/lor/r/8521/8448?locale=el#" style="color:#0563c1; text-decoration:underline">http://photodentro.edu.gr/lor/r/8521/8448?locale=el#</a>, &pi;&omicron;&upsilon; &alpha;&xi;&iota;&omicron;&pi;&omicron;&iota;&epsilon;ί&tau;&alpha;&iota;, &epsilon;ί&nu;&alpha;&iota; &eta; &laquo;&Theta;&epsilon;&rho;&mu;&iota;&kappa;ή &Delta;&iota;&alpha;&sigma;&tau;&omicron;&lambda;ή &Rho;ά&beta;&delta;&omicron;&upsilon;&raquo; &alpha;&pi;ό &tau;&omicron; &Phi;&omega;&tau;ό&delta;&epsilon;&nu;&tau;&rho;&omicron;. &Eta; &pi;&alpha;&iota;&delta;&alpha;&gamma;&omega;&gamma;&iota;&kappa;ή &pi;&rho;&omicron;&sigma;έ&gamma;&gamma;&iota;&sigma;&eta; &pi;&omicron;&upsilon; &alpha;&kappa;&omicron;&lambda;&omicron;&upsilon;&theta;&epsilon;ί&tau;&alpha;&iota; &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; &kappa;&alpha;&theta;&omicron;&delta;&eta;&gamma;&omicron;ύ&mu;&epsilon;&nu;&eta; &delta;&iota;&epsilon;&rho;&epsilon;&upsilon;&nu;&eta;&tau;&iota;&kappa;ή &mu;ά&theta;&eta;&sigma;&eta;.</p>