Re: Another question re: dose

[Ted de Castro <tdc@XRAYTED.COM>]

John Johnson wrote:



> FYI, doses can be in Grey (absorbed dose in energy per unit mass) or two

> kinds of Seiverts (1. equivalent dose in Greys x a radiation weighting

> factor Wsub(R) or 2. effective dose (Esub(eff)) in Greys x a radiation

> weighting factor Wsub(R) x  a tissue weighting factor Wsub(T) ). The

> effective dose is an attempt to calculate a quantity that is proportional to

> the risk.

> 

> A whole body Esub(eff) of 10 mSv/year has a much higher risk than the same

> Esub(eff) to a smaller tissue.



IF and ONLY IF LNTH is true!  This is a problem with SI units - they are

defined in terms of LNTH, making it hard to discuss otherwise without

them.



So very Orwellian!

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