terry wrote:

Another note: Have also bought replacement 9 volt (transistor radio)
type batteries for the three smoke detectors in the house. We change
them each New Year. Also believe have to check the age of one of the
detectors (although all are proven to work) when we occasionally
'smoke' something such as a bacon pan, something in the oven or a
piece of wood jammed in the bench saw! Apparently after a certain
number of years the radioactivity in the smoke detecting/ionizing
chamber ages? Thought that stuff lasted 10,000 years or summat; and
had to be disposed of as 'Hazardous Waste"?

http://en.wikipedia.org/wiki/Americium

Half-life 432 years. So let's see... can I remember my calculus?
Assume a 10% drop is important. That'll happen in .... err no, I can't
remember my calculus but about 65 years. I think.

And it's spelt "Tomato". Even in American. :P

Anyway: To everyone who reads, be safe. Greetings for the coming New
Year and any festivities warranted at this season of this year.
Hey; how's that for being 'politically correct'?

Happy new year to you to!

Cheers.

Andy

--
I can spell but I can't type.