Not to mention there is not so sensitive film, sensitive film and really sensitive film.
Good old orthographic film took minutes in bright light. > On Nov 4, 2016, at 20:24, Poul-Henning Kamp <p...@phk.freebsd.dk> wrote: > > -------- > In message <c57q1c5engv94amimot7pu3l8romu6g...@4ax.com>, David writes: > >> Various online sources say that natural rubidium is radioactive enough >> to fog photographic film in 1 to 2 months but that is also the case >> with unprocessed uranium ore so I would not worry about it at all. > > Yes, that sounds about right for an isotope with a 40 billion years > half-life. > > 1 to 2 months is a LOOOONG time for photographic film. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > p...@freebsd.org | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
