Oznake na ciferu

[laneni]

Mislim da je lepo da se objasne oznake u dnu cifera.
T swiss T kao i L swiss L
u nekim slucajevima swiss T25

Recimo da znamo objasnjenje da je u pitanju koriscenje tritiuma (T)
koriscenje tritiuma je u je zbog radioluminocencije sto je zastupljeno kod vojnih i ronilackih satova uglavnom mada se cesto koristi i u drugim.
po ISO standardu 3157 u pitanju je malo emitovanje radiacije. TRITIUM (3H) I PROMETHIUM(147Pm)

tritium 227 Mbq (7.5mCi

swiss T25 tritium 925 Mbq 25(mCi)

u slucaju L swiss L oznaka za fotoluminociju.

UKOLIKO SAM U PRAVU SA OVIM INFORMACIJAMA MOLIM STRUCNO LICE KOJE MALO BOLJE POZNAJE FIZIKU DA NAM RAZJASNI OVO.
da li cemo biti ozraceni radioaktivnom materijom iz svajcarske ukoliko nosimo sat 40 godina...

[sima hrabri]

"T Swiss Made T" or "Swiss T 25" : what does it mean ?

In order for timepieces to be read in the dark, a luminescent material is laid on the dial indexes and hands. Generally speaking, the emission of light is either of photoluminescent type (determined by an exciting luminous radiation) or of radioluminescent type (determined by the radioactivity of the material). Timepieces featuring radioluminescent emission are mostly designed for very specific uses : military watches, professional divers watches, etc. In this case, the use of radioactive material is strictly defined by ISO 3157 Standard which allows only two types of radionucleides : tritium (3H) and promethium (147 Pm). It is important to specify that these radionucleides emit a radiation of low energy. ISO 3157 Standard allows an optional marking for timepieces emitting less than a certain value. The marking may be made on the dial as follows : deposits activated by tritium : T deposits activated by promethium : Pm On the other hand, timepieces with a higher value, such as divers' watches, must be marked as follows : deposits activated by tritium : T 25 deposits activated by promethium : Pm 0,5 The indication "T Swiss made T" means that the watch is Swiss and contains a certain quantity of tritium that emits less than 227 MBq (7,5 mCi).The indication "Swiss T<25" means that the watch is Swiss and contains a certain quantity of tritium that emits less than 925 MBq (25 mCi). Most of the Swiss watches use a light emission of photoluminescent type. Some of them bear the optional marking "L Swiss Made L" to indicate it.

preuzeto odavde


Ali mene zanima zasto te oznake stoje i kod satova koji nemaju nikakvu luminaciju?

[tolarbo]

Simo kod kojih si satova to video? Mozdda mogu da objasnim ako mi kazes kod model ili posaljes fotku sata.

[laneni]

E pa da gosn Simo... i tu nastaje problematika.
Trazimo objasnjenje. Videcu da nadjem neke relevantne primere gde nema lumunocencije.