[ RadSafe ] Collective Dose and Death

[Howard]

Not entirely so, Otto.
Sunburn may be from ultraviolet, between infrared (heat) and x-ray frequency radiation -
as I found when overdosing a patient with an UV sunlamp, many years ago.
Lay persons seem to understand hormesis with this analogy, more than with the aspirin one,
in my experience.

Howard Long

On Jan 6, 2011, at 8:16 AM, "Otto G. Raabe" <ograabe at ucdavis.edu> wrote:

> At 10:11 PM 1/5/2011, Howard Long wrote:
>> Sunshine, 20 min a week for a year to arms and face, is needed, although
>> 30 x that burns, if at one sitting.
>> Sunshine, better than aspirin, illustrates inappropriatness of collective dose of ionizing radiation because more similar. Right, Otto?
> *******************************
> I don';t see the connection.
> 
> Sunlight is is more complex. The burns are caused by infrared but the skin cancers are caused by ultraviolet near the other end of the visible light spectrum.
> 
> I don't think there is a linear relationship between skin cancer risk and ultraviolrt exposure. In fact, I believe there is an effective threshold.
> 
> Otto
> 
> 
> **********************************************
> Prof. Otto G. Raabe, Ph.D., CHP
> Center for Health & the Environment
> University of California
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