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RE: Activity and Dose Analogies
I've used the light bulb analogy - not perfect but gets a rough idea
across:
Activity = bulb wattage
Exposure = light emitted from bulb
Dose = light that falls onto a person
So a bare 100W bulb left on in the basement provides exposure, but no dose
if no one is down there. Dose/light gets greater closer to the bulb. 60 W
bulb provides less dose at same location. Etc.
Haven't yet carried it through to distinguish dose and dose equivalent.
Any ideas?
Happy New Year to all!
_____________________________
Joseph M. Greco, CHP
Radiation/Laser Safety Officer
Eastman Kodak Company
Rochester NY 14652-6261
voice: 585-588-3324
fax: 585-588-0825
email: joseph.greco@kodak.com
motto: "illegitimi non carborundum"
"Jim Blute"
<jblute@NITON.com> To: "Stabin, Michael"
Sent by: <michael.g.stabin@vanderbilt.edu>
owner-radsafe@list.van cc: <radsafe@list.vanderbilt.edu>
derbilt.edu Subject: RE: Activity and Dose Analogies
12/29/2004 09:06 AM
Please respond to "Jim
Blute"
Mike,
I like this. I have used guns and bullets as an analogy often for the same
purpose and have often received comments that this might be too harsh and
scary an analogy. I must admit I agree. The boxer is still a bit violent
but less associated with death than a gun. Yet still something everyone is
familiar with.
I am sure there must be better than that still. Something less violent but
still physically comparable.
Thanks for the post Mike.
Any other good analogies out there?
-----Original Message-----
From: owner-radsafe@list.vanderbilt.edu
[mailto:owner-radsafe@list.vanderbilt.edu]On Behalf Of Stabin, Michael
Sent: Wednesday, December 29, 2004 6:52 AM
To: radsafe
Subject: BBC analogies
This showed up in a technical report I was reading. No reference was
given. I just thought it was interesting.
The British Broadcasting Company (BBC) has provided an illustrative
boxing analogy to contrast what is intended by the three international
radiation measures. It depicts, for the public, the qualitative
differences between Bq, Gy and Sv as:
Bq: " a measure of how many punches are thrown without regard to whether
they are roundhouses, hooks, jabs, or even if they connect at all."
Gy: "a unit that measures whether the punch is a strong uppercut or just
a little jab. However, the gray wouldn't show the cumulative effect of
something like 100 jabs to the exact same spot on the cheekbone versus
one hard punch to the solar plexus"
Sv: "useful in determining the likelihood that (the boxer) might suffer
some long-term damage as a result of this pummeling." "In short, a Sv is
the most useful but complicated and subjective unit for measuring
radiation effects on people."
Mike
Michael G. Stabin, PhD, CHP
Assistant Professor of Radiology and Radiological Sciences
Department of Radiology and Radiological Sciences
Vanderbilt University
1161 21st Avenue South
Nashville, TN 37232-2675
Phone (615) 343-0068
Fax (615) 322-3764
Pager (615) 835-5153
e-mail michael.g.stabin@vanderbilt.edu
internet www.doseinfo-radar.com
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