This is becoming a popular thing again. I myself have a key chain (Nite GlowRing) and like you said it’s safe as long as you don’t inhale it if instantly exposed

Thanks for an Engineer's take on these tubes. I got a Tawatec watch and LOVE it. Was always wondering about the health effects. Also looking to put a few of these tubes on my crossbow.

Great informative video. As a vintage watch collector, i'd like to see some information on tritium paint that was used from the 1960's though the late 1990's and replaced the much more dangerous radioactive Radium. I have several tritium Rolex sports models from the mid 90's and you can still see some glow after your eyes adjust to the darkness. I live about 30 miles away from Ottawa IL which gained the name "Death City" due to the Radium Girls which in itself is a fascinating yet tragic story of the dangers of occupational radioactivity exposure.

Interesting information. Thank you 😊

I just got a Ball Nightbreaker as well and I love wearing it at night.

좋은 정보입니다. good informative video. just bought tritium watch and i was about to curious is it dagerous.

Hi. You are correct about low distance, and ability of penetration of B-particles emited by tritium. Tritium itself is theoretically safe in glass vial. So, broken vial is not big problem, as you mentioned, amount of gas is so small and it disposed in atmosphere it disappears in milliseconds. Only problem if You eat glass vial and it broke - probably more harmful will be glass in you stomach than tritium. Ok, problem with Tritium is … Einstein ;) So, B-particles unfortunately hits phosphorous, and glass, and it SLOWs down electron by atomic nucleus (look at: Bremsstrahlung - deceleration radiation)… energy can not disappear and is distributed to photon … unfortunately X-ray photon, which has about 18-20keV, so it is low energy X-ray… but X-ray penetrating glass and other materials quite easy. Amount of tritium in the watch is small, and area of impact is small too, so amount of radiation is not very dangerous but is measurable and near, close to wall of common vial is near 10-15x of level of background… ofc. much less after 10mm of watch construction (dependable of materials was used in the watch) Is there any problem ? Nobody knows. You can judge this only that way: Take watch - different model - different measurings needed, and low energy X-ray meter (common Geiger counter is deaf or not able to measure with enough precision), so some Ludlum models has ability to connect low energy X-ray probe. Common Geiger meter measure right about 60-100keV and higher energy, depends of tube construction (for eg russian tubes CTC5 or SBM20 are almost totally deaf at 30keV or lower). Probably more radioactive areas of our planet (some regions of Brasil etc) are much more radioactive than tritium watch… but if You want to limit radiation you are exposing, tritium watch is not perfect friend… :) My opinion: It is safe ? Probably YES, it is necessary ? Not for all. If you are military, police, cave exploration etc… when you are on duty - ok. For fun always wearing … not really.

I have a Bulova watch from 1927 should I be worried? Thanks!

Great video! Well done.

Great video! I opened a 1970s Tissot seastar ten days ago and lubricated the movement. Then I noticed the T on the dial, which means that its luminous contains tritium.I'm a little anxious right now as to whether I've inhaled some tritiated dust.

Own a REACTOR gamma titainium black tritium watch....love love love it ....I always liked the Timex indiglo technology and the Casio illuminator is good too...but tritium technology is always on...no need to press a button...plus the indiglo and illuminator drains battery life.

Recently japan announced they will release the radioactive water (titanium mixed) in Pacific Ocean. Will it be dangerous for nature(humans & animals consuming that water)?

If the tritium tubes were stored in a 2 liter bottle for some time would it be harmful when removing the top of the bottle?

I own a luminox series 8300! it glows well

very very nice to watch.

I constantly see tritium referenced as a man made gas in modern tritium tubes but can anyone educate me as to how tritium was mixed with zinc sulfide in paint form and applied to the dial to give the constant glow in watches from the 1960's - 1998? Was there a hard form that was then turned into a powder and then mixed with zinc sulfide?

love the black and white images

i own a tritium watch and its beautiful, love the colours in the tubes..

I bought a used ball watch with one broken tube. Am I in risk of radiation?

I know that the guys in Nam had some watches and compasses like that for night time use.

I have a watch from 1973 with tritium lume, but it no longer glows.....

It`s more dangerous to not see quickly what time is in dark than dial radiation. Excemple in driving, how long you looking at watch.

Ive got an Enicar Star Jewels from the 60s or 70s that has tritium paint on it :)

I want to buy a roamer with radium, but im affraid.

Ah that makes sense now. There's a company called night fision. They make night sites for guns.

The problems are not the beta-particle themselves, but when they get slowed down by the glass vial. Because when slowed down they create "Bremsstrahlung" and emit X-ray radiation.

Got a G Shock GA2000 but hands has green radium It is safe

I thought Tritium produces X-ray radiation. Isn't that dangerous?

Dude you glow in dark. look at you, you look like Drakula hahah

So in short it's dangerous, just not as dangerous as a nuke

Tritium yes, radium no.

my watch has the painted tritium

Radium is very dangerous.

tritium does not glow all night long

Don't u think u deserve more subscribers

a lot of waffle about guns and watches its like an advert.

en.m.wikipedia.org/wiki/Tritium_radioluminescence