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Breitling 1191 https://www.breitlingsource.com/phpBB2/viewtopic.php?f=11&t=62929 |
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Author: | Dracha [ Wed Jun 07, 2017 2:55 pm ] |
Post subject: | Re: Breitling 1191 |
buddman wrote: So not radium then I guess. +1 Radium doesnt need a 'light charge' to be luminous in the dark , so its Tritium or newer |
Author: | davedc74 [ Wed Jun 07, 2017 3:07 pm ] |
Post subject: | Re: Breitling 1191 |
my HIGHLY limited knowledge is that this is what radium does -- glow under UV then rather quickly stop glowing. |
Author: | Montys [ Wed Jun 07, 2017 11:01 pm ] |
Post subject: | Re: Breitling 1191 |
Dracha wrote: buddman wrote: So not radium then I guess. +1 Radium doesnt need a 'light charge' to be luminous in the dark , so its Tritium or newer Where are you getting your information from? The article I liked to from one of the worlds more serious Rolex collectors says Radium will need a UV light source to glow. You can even see that the lume has broken down in places by comparing the UV photos to the ones I did with the microscope. |
Author: | Montys [ Thu Jun 08, 2017 8:29 am ] |
Post subject: | Re: Breitling 1191 |
Well it's Radium! Where do we go from here? Anyone else still on the fence? |
Author: | Dracha [ Thu Jun 08, 2017 1:05 pm ] |
Post subject: | Re: Breitling 1191 |
Either your measurements are off or mine are , here is what i measure on a 1960 radium dial |
Author: | WatchFred [ Thu Jun 08, 2017 1:48 pm ] |
Post subject: | Re: Breitling 1191 |
Rene, the 20-25 range is fairly typical ? 73 is extreme, I think, we should check w/ Jack or Roy Davidoff, who did a ton of research ? |
Author: | Montys [ Thu Jun 08, 2017 1:57 pm ] |
Post subject: | Re: Breitling 1191 |
WatchFred wrote: Rene, the 20-25 range is fairly typical ? 73 is extreme, I think, we should check w/ Jack or Roy Davidoff, who did a ton of research ? His reading is only 1.38 so something is off with his reading Any more thoughts on my watch Fred? Thanks |
Author: | Dracha [ Thu Jun 08, 2017 2:39 pm ] |
Post subject: | Re: Breitling 1191 |
Before stating my reading is off , do a search and find out how much 20 microsiev really is , ive done some searching and there are videos of old military watches that show in the 1.2 to 1.9 range , 20+ is cause for alarms to go off |
Author: | Dracha [ Thu Jun 08, 2017 2:41 pm ] |
Post subject: | Re: Breitling 1191 |
Ps fred , 73 is the cpm count , 1.38 is the siev count , the 1191 dial is 15 times higher |
Author: | buddman [ Thu Jun 08, 2017 2:47 pm ] |
Post subject: | Re: Breitling 1191 |
Rene - I don't understand the importance of your comment. Whats the issue if the 1191 dial has a higher reading than your dial? Doesn't that fact that it measures anything at all on the Geiger say its Radium? Wouldn't the reading be somehow proportional to the amount/concentration/makeup of the radium paint originally applied? |
Author: | Montys [ Thu Jun 08, 2017 2:54 pm ] |
Post subject: | Re: Breitling 1191 |
Dracha wrote: Before stating my reading is off , do a search and find out how much 20 microsiev really is , ive done some searching and there are videos of old military watches that show in the 1.2 to 1.9 range , 20+ is cause for alarms to go off You said mine or yours was off. I think yours is off in the article I linked to the readings were between 5 and 37 and these were dive watches with better seals & thicker glass. Are you sure you had a correct reading? |
Author: | Dracha [ Thu Jun 08, 2017 3:14 pm ] |
Post subject: | Re: Breitling 1191 |
Montys wrote: Dracha wrote: Before stating my reading is off , do a search and find out how much 20 microsiev really is , ive done some searching and there are videos of old military watches that show in the 1.2 to 1.9 range , 20+ is cause for alarms to go off You said mine or yours was off. I think yours is off in the article I linked to the readings were between 5 and 37 and these were dive watches with better seals & thicker glass. Are you sure you had a correct reading? I didnt see an article linked ? I am quite sure my reading is correct , compare to this reading of a radium rolex (5.4 microsiev) I assume (by eyeing the amount of lume) the rolex has more lume material than the 1191 dial so emits more http://www.watchprosite.com/page-wf.for ... i-6840528/ this clip shows (@2.04) 2.44 microsiev https://www.youtube.com/watch?v=ayghIDng8X8 here a bakelite GMT shows 'only' 9 microsiev http://rolexpassionreport.com/21770/the ... olex-dial/ so the 21+ is incredibly high , hence I doubt the measurement or tool ? for comparison , here are some articles with 20 microsiev are mentioned close to fukushima http://enenews.com/20-microsieverts-hou ... maps-chart Radiation Dose: 3.5 microsieverts Exposure: Lowest daily dose within 30-60km of the Fukushima nuclear plant (3/20) https://www.allianz.com/en/about_us/ope ... acf094c83e On March 28, the highest reading occurred approximately 20 km from the Fukushima plant at 78 microsieverts per hour. http://science.time.com/2011/03/29/fuku ... bad-is-it/ So the measured 21 micro seems awfully high , higher than any other watch that I can see , including old military and rolex watches |
Author: | Montys [ Thu Jun 08, 2017 3:17 pm ] |
Post subject: | Re: Breitling 1191 |
In the rolex passion report article the readings are 5-37. I have a 1945 Tudor and a WW1 issued pocket watch to test tomorrow. |
Author: | Dracha [ Thu Jun 08, 2017 3:30 pm ] |
Post subject: | Re: Breitling 1191 |
Montys wrote: In the rolex passion report article the readings are 5-37. I have a 1945 Tudor and a WW1 issued pocket watch to test tomorrow. great , please measure a tritium watch as well ?, as reference point ? |
Author: | Montys [ Fri Jun 09, 2017 1:38 am ] |
Post subject: | Breitling 1191 |
Dracha wrote: Montys wrote: In the rolex passion report article the readings are 5-37. I have a 1945 Tudor and a WW1 issued pocket watch to test tomorrow. great , please measure a tritium watch as well ?, as reference point ? Have you got any other watches to compare with to see if your counter is working correctly? You would expect a Tritium dial to have a zero reading as it emits Beta particles and we are testing Alpha/Gamma particles given off by the Radon-222 gas. (my dad did his degree in physics) |
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