Βλέπει κανείς τις "βουλίτσες" της λουμινόβας, και καταλαβαίνει την ποιότητα.
Γεώργιε, δυστυχώς η luminova δεν φεγγοβολάει πλέον, ξεθώριασε.. το ρολόι φέτος γιορτάζει τα 30 του χρόνια αν δεν με γελά η μνήμη μου
Γιατί στενοχωριέσαι ? Την χρειάζεσαι ? Ζείς στο σκοτάδι ?
Αυτά είχαν ημιπερίοδο ζωής 12,5 χρόνια. Μετά............καπούτ
Rolex used a radioactive compound called Tritium to make their hands and dials glow in the dark. Since Tritium is radioactive, it will glow whether or not it receives any light exposure;
however its ability to glow is limited by the radioactive half-life of the material itself. This means that as Tritium ages, its ability to glow will diminish until the point that it ceases to glow at all.
Rolex adopted Tritium as a safer alternative to Radium (another radioactive material); however since Tritium is significantly less radioactive than Radium,
it only has a half-life of approximately 12.5 years. This means that roughly two decade after the watch was originally manufactured, only a small fraction of its initial luminescence would still remain.
Consequently, it is only natural for an older Rolex watch to not glow anymore, as the radioactive material that was originally used on its dial and hands
has effectively burnt itself out over the years. Additionally,
since the loss of luminescence is due to the inherent limitations of the manufacturing materials, a non-glowing dial and handset is not often seen as a demerit when determining potential resale value.
