καθυστερηση περιοδου

Question

&kappa;&alpha;&lambda;&eta;&sigma;&pi;&epsilon;&rho;&alpha; &sigma;&alpha;&sigmaf; &theta;&alpha; &theta;&epsilon;&lambda;&alpha; &nu;&alpha; &sigma;&alpha;&sigmaf; &kappa;&alpha;&nu;&omega; &mu;&iota;&alpha; &epsilon;&rho;&omega;&tau;&eta;&sigma;&eta;, &Omicron; &kappa;&upsilon;&kappa;&lambda;&omicron;&sigmaf; &mu;&omicron;&upsilon; &epsilon;&iota;&nu;&alpha;&iota; 28-30 &eta;&mu;&epsilon;&rho;&omega;&nu;, &tau;&eta;&nu; 16&eta;-17&eta; &mu;&epsilon;&rho;&alpha; &tau;&omicron;&upsilon; &kappa;&upsilon;&kappa;&lambda;&omicron;&upsilon; &epsilon;&iota;&chi;&alpha; &epsilon;&pi;&alpha;&phi;&eta; &mu;&epsilon; &tau;&rho;&alpha;&beta;&eta;&gamma;&mu;&alpha; &omicron;&chi;&iota; &omicron;&lambda;&omicron;&kappa;&lambda;&eta;&rho;&omega;&mu;&epsilon;&nu;&eta; &kappa;&alpha;&iota; &eta;&delta;&eta; &epsilon;&iota;&mu;&alpha;&iota; &sigma;&tau;&eta;&nu; 2&eta; &mu;&epsilon;&rho;&alpha; &kappa;&alpha;&theta;&upsilon;&sigma;&tau;&epsilon;&rho;&eta;&sigma;&eta;&sigmaf;. &Alpha; &xi;&epsilon;&chi;&alpha;&sigma;&alpha; &nu;&alpha; &sigma;&alpha;&sigmaf; &pi;&omega; &omicron;&tau;&iota; &epsilon;&chi;&tau;&epsilon;&sigmaf; &sigma;&tau;&eta;&nu; 1&eta; &mu;&epsilon;&rho;&alpha; &kappa;&alpha;&theta;&upsilon;&sigma;&tau;&epsilon;&rho;&eta;&sigma;&eta;&sigmaf; &epsilon;&kappa;&alpha;&nu;&alpha; &tau;&epsilon;&sigma;&tau; &tau;&omicron; &omicron;&pi;&omicron;&iota;&omicron; &beta;&gamma;&eta;&kappa;&epsilon; &alpha;&rho;&nu;&eta;&tau;&iota;&kappa;&omicron;. &tau;&iota; &lambda;&epsilon;&tau;&epsilon; &epsilon;&sigma;&epsilon;&iota;&sigmaf; &epsilon;&chi;&omega; &pi;&iota;&theta;&alpha;&nu;&omicron;&tau;&eta;&tau;&epsilon;&sigmaf;?