Radium (Ra) has 25 different known isotopes, four of which are found in nature, are all generated naturally in the decay of either Uranium (U) or Thorium (Th). 226Ra is a product of 238U decay, and is the longest-lived isotope of radium with a half-life of 1601 years; next longest is 228Ra, a product of 232Th breakdown, with a half-life of 5.75 years.
Awesome! I have those same model switches, 6 of them, and they are the exact same ones I have! That's Awesome! The ones I have came out of an old Pullman Train Car. Mine are momentary, but the markings on the switches I have say "CH" on top. On the bottom; MADE IN U.S.A. PATENT NO. 1605910; left; 5A. 125V.A.C. 35A. 25V. That's what my switches read, but they don't have numbers painted on the side like yours do. Are yours similar? Interesting! The beads on tip do give of a lot of radiation! 5/5!
These were a gift to me from a friend who found them in a garage sale. At this time, I am keeping all of them. I will be putting up a new video, part 2, of these switches.
I think it was just picking up some radiation from the switches. George at GeoElectronics calibrated it using (I believe) a Ludlum 500-2 pulser about 2 years ago. I haven't touched the calibration, and it should still be fairly accurate. It has an internal pancake probe on the bottom of the case. You can see the BNC cable/jumper going from the top to the bottom/rear side where the pancake probe jack is located. The Leni Pro is a nice machine.
Is that radiation strong enough to damage your health?
modifiedcarmaniac 10 months ago
@modifiedcarmaniac No, not at all.
mkrubsack 10 months ago
@mkrubsack And for how many years would they stay radioactive?, I don't know a lot about radioactivity but I'm interested in it!
modifiedcarmaniac 9 months ago
@modifiedcarmaniac Research the term "half-life."
Radium (Ra) has 25 different known isotopes, four of which are found in nature, are all generated naturally in the decay of either Uranium (U) or Thorium (Th). 226Ra is a product of 238U decay, and is the longest-lived isotope of radium with a half-life of 1601 years; next longest is 228Ra, a product of 232Th breakdown, with a half-life of 5.75 years.
mkrubsack 9 months ago
@mkrubsack Thanks, you really know what your on about!
modifiedcarmaniac 9 months ago
Great video! I just bought the CRM-100, a lighter version of the inspector. Good stuff!
antiprotons 1 year ago
Awesome! I have those same model switches, 6 of them, and they are the exact same ones I have! That's Awesome! The ones I have came out of an old Pullman Train Car. Mine are momentary, but the markings on the switches I have say "CH" on top. On the bottom; MADE IN U.S.A. PATENT NO. 1605910; left; 5A. 125V.A.C. 35A. 25V. That's what my switches read, but they don't have numbers painted on the side like yours do. Are yours similar? Interesting! The beads on tip do give of a lot of radiation! 5/5!
KarbineKyle 2 years ago
I built a LENi using my old anton electronics model 5
civildefensecollectr 2 years ago
These were a gift to me from a friend who found them in a garage sale. At this time, I am keeping all of them. I will be putting up a new video, part 2, of these switches.
mkrubsack 2 years ago
I think it was just picking up some radiation from the switches. George at GeoElectronics calibrated it using (I believe) a Ludlum 500-2 pulser about 2 years ago. I haven't touched the calibration, and it should still be fairly accurate. It has an internal pancake probe on the bottom of the case. You can see the BNC cable/jumper going from the top to the bottom/rear side where the pancake probe jack is located. The Leni Pro is a nice machine.
mkrubsack 3 years ago
Very cool switches. I love your Leni!
klutz22 3 years ago