- Posts
- 17,746
- Likes
- 26,930
How do you tell if replacement hands are later tritium, or superluminova?
- Posts
- 875
- Likes
- 2,606
- Posts
- 17,746
- Likes
- 26,930
- Posts
- 614
- Likes
- 835
- Posts
- 875
- Likes
- 2,606
Now that’s awesome!!!
- Posts
- 6,790
- Likes
- 21,972
M'Bob
·Anyone have UV experience with determining Radium vs Tritium?
- Posts
- 173
- Likes
- 365
BrianPankow
·Tritium does produce very low energy x-rays through Bremsstrahlung (braking radiation). These would not usually be detectable with a Geiger counter unless very high activities were present. Not the levels found in a watch. You would need a NaI detector, designed to see low levels of photon radiation (gamma and x-ray), to detect Tritium in a watch. This is assuming there is enough Tritium to produce a detectable number of x-rays and the efficiency of your NaI detector. Not likely in a vintage watch with Tritium’s short half-life.
The short answer is that you are not likely to detect Tritium in a “vintage” watch with any radiation detectors unless you open it and take a sample for Liquid Scintillation Counting. If you have a Geiger counter or dose rate meter and get decent reading you have Radium.
The short answer is that you are not likely to detect Tritium in a “vintage” watch with any radiation detectors unless you open it and take a sample for Liquid Scintillation Counting. If you have a Geiger counter or dose rate meter and get decent reading you have Radium.
- Posts
- 6,790
- Likes
- 21,972
M'Bob
·Tritium does produce very low energy x-rays through Bremsstrahlung (braking radiation). These would not usually be detectable with a Geiger counter unless very high activities were present. Not the levels found in a watch. You would need a NaI detector, designed to see low levels of photon radiation (gamma and x-ray), to detect Tritium in a watch. This is assuming there is enough Tritium to produce a detectable number of x-rays and the efficiency of your NaI detector. Not likely in a vintage watch with Tritium’s short half-life.
The short answer is that you are not likely to detect Tritium in a “vintage” watch with any radiation detectors unless you open it and take a sample for Liquid Scintillation Counting. If you have a Geiger counter or dose rate meter and get decent reading you have Radium.
Thanks. I was wondering how the two different luminous substances on either dial or hands respond to a burst of UV light. Hopefully, different enough to tell them apart without a Geiger counter.
- Posts
- 5,259
- Likes
- 24,252
YY77
·So recently I had my TH Kirium of 20 years serviced and they replaced the tritium hands with superluminova. I didn't know after the fact I say t swiss made t on the dial so got them replaced back locally.
You can see the difference in the picture on the left, at full burst and on the right after 5 seconds, the glow on the tritium hands and the spare luminova hands.
You can see the difference in the picture on the left, at full burst and on the right after 5 seconds, the glow on the tritium hands and the spare luminova hands.
- Posts
- 6,790
- Likes
- 21,972
M'Bob
·So recently I had my TH Kirium of 20 years serviced and they replaced the tritium hands with superluminova. I didn't know after the fact I say t swiss made t on the dial so got them replaced back locally.
You can see the difference in the picture on the left, at full burst and on the right after 5 seconds, the glow on the tritium hands and the spare luminova hands.
I don't believe I can tell one from the other in your photo.
- Posts
- 5,259
- Likes
- 24,252
- Posts
- 6,790
- Likes
- 21,972
M'Bob
·Okay, so the Tritium hands and dial are actually on the watch, and the two photos below are the Luminova hands?
If that’s the case, then I wouldn’t be able to sort Tritium from Luminova from either the color nor glow. Do you have a photo that’s similar to the above, but after a minute?
If that’s the case, then I wouldn’t be able to sort Tritium from Luminova from either the color nor glow. Do you have a photo that’s similar to the above, but after a minute?
- Posts
- 5,259
- Likes
- 24,252
YY77
·Okay, so the Tritium hands and dial are actually on the watch, and the two photos below are the Luminova hands?
If that’s the case, then I wouldn’t be able to sort Tritium from Luminova from either the color nor glow. Do you have a photo that’s similar to the above, but after a minute?
- Posts
- 875
- Likes
- 2,606
BatDad
·Are you sure that they replaced the hands with Super Luminova?
Edited:
- Posts
- 5,259
- Likes
- 24,252
YY77
·Are you that they replaced the hands with Super Luminova?
Also the t's disappeared from the dials on later models.
Plus the glow of the replacement hands is really strong for a few hours.
- Posts
- 875
- Likes
- 2,606
BatDad
·I’m not familiar with the TH Kirium brand so I’ll defer to you - but they did an awesome job of color matching the two luminous variants!!
If Omega did this it would mark it much harder to tell new hands from old.
If Omega did this it would mark it much harder to tell new hands from old.
- Posts
- 5,259
- Likes
- 24,252
YY77
·I’m not familiar with the TH Kirium brand so I’ll defer to you - but they did an awesome job of color matching the two luminous variants!!
If Omega did this it would mark it much harder to tell new hands from old.
- Posts
- 6,790
- Likes
- 21,972
