Re: Color TV screens as radon daughter collectors

["Glow_Worm" <Glow_Worm@GotHotRocks.com>]

Hi,

I have had some success with this in the past. The amount of radiation

is not too impressive but it will make the needle move on most any

sensitive counter fitted with a pancake probe. Also works on a

computer screen.

    First, take a reading of background, then a reading of the dust

collected from the screen. There is a slight increase. We simply wiped

the screen with tissue paper and held it to the probe.

Another interesting area of the house that collects radioactive

material is the lint in the lint trap of your cloths dryer, especially

if a few loads have been ran through it the same day without cleaning

the trap. The lint on the trap will be slightly radioactive.

    I haven't tried it yet but I would guess that the filters on your

furnace may also collect radioactivity.

Probably anything that has a lot of air movement through a filter. I

also wonder about the vacuum cleaner bag.

    Good luck,

            Ron



----- Original Message -----

From: "North, David" <DNorth@LIFESPAN.ORG>

To: "'RADSAFE'" <radsafe@list.vanderbilt.edu>

Sent: Friday, November 15, 2002 8:09 AM

Subject: Color TV screens as radon daughter collectors





> Dear Radsafers,

>

> I know this subject has come up on the List before, but I wasn't

paying

> really close attention. Now my daughter needs some sort of science

project,

> and I thought it might be possible for her to assay some airborne

dust

> (hopefully laden with radon daughters) that collects on TV and PC

monitor

> screens. Are there any tips out there for doing this? What's good

for

> cleaning the screens? What's good for counting, a thin-window GM?

How long

> does the TV have to be powered on to collect enough?



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