Re: taking apart smoke detectors

[Ludwik Kowalski <KowalskiL@MAIL.MONTCLAIR.EDU>]

> .... How do you reliably assure parents that their kids are not
> getting more radiation than allowed?  Like I mentioned earlier,
> all you need is one parent with a little bit of misunderstood
> or misinterpreted information to cause a major pain in the ass. ...

You can avoid this by using radioactivity (Rn and its daughters
from air) collected from the screen of a common TV or computer
screen. Details were discussed here about two years ago. The name
of the thread was "radioactivity from air" or something like this.

Perhaps Tom Walkiewicz will repost references to his good
publications, especially the one in which a common balloon was
used to collect ions. This source was much much stronger than
5 to 10 times the background (typical for what can be collected
from a TV screen in my area).

Ludwik Kowalski