4 ms·

... medical implants... Powered by radioactive battery?

• alanbernstein 7y ago
  Not unprecedented! https://www.orau.org/ptp/collection/Miscellaneous/pacemaker.htm https://www.orau.org/ptp/collection/Miscellaneous/pacemaker....
• cperciva 7y ago
  Sure. Tritium releases very low energy beta particles; even a thin casing will render this safe.
  • jjtheblunt 7y ago
    I could swear that, as a kid near Chicago in the early 1980s, I had a tritium-backlit Timex or Casio digital watch. That said, I can't find it online...and gave it away decades ago.
    • dole 7y ago
      I could be wrong but tritium on watches usually wasn’t typically used on the face itself, but in gas tubes or vials on the hands and hours markers. Ball, Marathon and Luminox are three popular watch brands that use them currently. Evidently radium stopped being used for lume in 1970, and while tritium faces may have been a replacement around that time, tritium as used only has a lifespan between 12-24 years.
      • SamReidHughes 7y ago
        Tritium was commonly used in luminescent paint on mainstream watches (Rolex, Omega, et al) until the late 90's/early 2000's.
• H8crilA 7y ago
  Tried as early as in the 60s with pacemakers: https://en.wikipedia.org/wiki/Artificial_cardiac_pacemaker#Lithium_battery https://en.wikipedia.org/wiki/Artificial_cardiac_pacemaker#L...