Lume question

Thread: Lume question

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  1. #1
    Member LouS's Avatar
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    Oct 2009

    Lume question

    Is the luminescence of radioactive paint constant after dark? I'm not asking over years -- I know it has a half-life, so on and so forth -- but over the course of a single dark period. Another way of asking the same question: If the lume on one's watch initially glows brightly then fades after lights out, may one assume that it is a Luminova or SuperLuminova re-lume?
    Last edited by LouS; June 3rd, 2010 at 01:24.

  2. #2
    Member lysanderxiii's Avatar
    Join Date
    Oct 2006
    N 32 deg, 47' 27.9168"; W 79 deg, 54' 30.3372"

    Re: Lume question

    Basically, yes.

    Tritium vials (about all you will find new these days) will glow slightly brighter, as the phosphors will absorb ambient light as well as the energy from the radioactive source. This is largely offset by your eyes not being dark adapted.

    familiaritas parit contemptum; raritate admiratione wins.- Lucius Apuleius
    est necessry, accurate ad secundo? - Lysander magna
    iustum est horologium - Obscurus Genius

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