Υπέρηχος 4

Question

&Tau;&eta;&nu; &chi;&omicron;&rho;&iota;&alpha;&kappa;&eta; &tau;&eta;&nu; &mu;έ&tau;&rho;&eta;&sigma;&alpha; &sigma;&tau;&omicron; ί&delta;&iota;&omicron; &epsilon;&rho;&gamma;&alpha;&sigma;&tau;ή&rho;&iota;&omicron;. &Upsilon;&pi;ά&rho;&chi;&epsilon;&iota; &pi;&epsilon;&rho;ί&pi;&tau;&omega;&sigma;&eta; &nu;&alpha; έ&chi;&epsilon;&iota; &gamma;ί&nu;&epsilon;&iota; &lambda;ά&theta;&omicron;&sigmaf; &kappa;&alpha;&iota; &nu;&alpha; &epsilon;ί&nu;&alpha;&iota; &mu;&iota;&kappa;&rho;ό&tau;&epsilon;&rho;&eta;; &beta;&epsilon;&beta;&alpha;&iota;&alpha; ό&pi;&omega;&sigmaf; &upsilon;&pi;&omicron;&lambda;ό&gamma;&iota;&zeta;&alpha; &eta; &chi;&omicron;&rho;&iota;&alpha;&kappa;&eta; έ&pi;&rho;&epsilon;&pi;&epsilon; &nu;&alpha; &nu;&alpha;&iota; &pi;&epsilon;&rho;ί&pi;&omicron;&upsilon; 8000.&alpha;&nu; &upsilon;&pi;&omicron;&theta;έ&sigma;&omicron;&upsilon;&mu;&epsilon; ό&tau;&iota; &delta;&iota;&pi;&lambda;&alpha;&sigma;&iota;&alpha;&zeta;&omicron;&tau;&alpha;&nu;. &Eta; &sigma;ύ&lambda;&lambda;&eta;&psi;&eta; &mu;ά&lambda;&lambda;&omicron;&nu; έ&gamma;&iota;&nu;&epsilon; &tau;&eta;&nu; 17&eta; &pi;&rho;&omicron;&sigmaf; 18&eta; &mu;&epsilon;&rho;ά &tau;&omicron;&upsilon; &kappa;ύ&kappa;&lambda;&omicron;&upsilon; &gamma;&tau; &tau;ό&tau;&epsilon; &epsilon;ί&chi;&alpha;&mu;&epsilon; &kappa;&iota; &epsilon;&pi;&alpha;&phi;ή.&eta; &kappa;&alpha;&theta;&upsilon;&sigma;&tau;&epsilon;&rho;&eta;&mu;έ&nu;&eta; &sigma;ύ&lambda;&lambda;&eta;&psi;&eta; &alpha;&pi;&omicron;&kappa;&lambda;&epsilon;ί&epsilon;&tau;&alpha;&iota;; &mu;&pi;&omicron;&rho;ώ &nu;&alpha; &sigma;&alpha;&sigmaf; &sigma;&tau;&epsilon;ί&lambda;&omega; &mu;&epsilon; &kappa;&pi;&nu; &tau;&rho;ό&pi;&omicron; &epsilon;&delta;ώ &tau;&omicron;&nu; &upsilon;&pi;έ&rho;&eta;&chi;&omicron; &sigma;&epsilon; &phi;&omega;&tau;&omicron;&gamma;&rho;&alpha;&phi;ί&alpha;; doppler &pi;ά&nu;&tau;&omega;&sigmaf; &omicron; &gamma;&iota;&alpha;&tau;&rho;ό&sigmaf; &delta;&epsilon;&nu; έ&beta;&alpha;&lambda;&epsilon; &kappa;&alpha;&iota; &omicron;ύ&tau;&epsilon; &pi;&rho;&omicron;&sigma;&pi;ά&theta;&eta;&sigma;&epsilon; &kappa;&alpha;&nu; &nu;&alpha; &alpha;&kappa;&omicron;ύ&sigma;&epsilon;&iota; &Kappa;&alpha;&rho;&delta;&iota;ά &gamma;&tau; &alpha;&mu;έ&sigma;&omega;&sigmaf; &epsilon;ί&pi;&epsilon; &epsilon;ί&nu;&alpha;&iota; &pi;&omicron;&lambda;ύ &mu;&iota;&kappa;&rho;ό. &Kappa;&alpha;&iota; &delta;&epsilon;&nu; ή&tau;&alpha;&nu; &omicron; &gamma;&iota;&alpha;&tau;&rho;ό&sigmaf; &mu;&omicron;&upsilon; ή&tau;&alpha;&nu; &kappa;&pi;&sigmaf; ά&lambda;&lambda;&omicron;&sigmaf;. Ά&rho;&alpha; &nu;&alpha; &mu;&eta;&nu; &epsilon;&lambda;&pi;ί&zeta;&omega;;