Re: FW: Sickening Solar Flares

[John Jacobus <crispy_bird@yahoo.com>]

Of course, NASA could have confused the entrance

exposure rather than the dose equivalent.  



--- farbersa <farbersa@optonline.net> wrote:



> On Thu, 27 Jan 2005 13:39:28 -0800, Careway, Harold

> A. (GE Energy)  

> <Harold.Careway@gene.GE.com> wrote:

> 

> > How different it is when you don't work in the

> nuclear industry.

> >

> > hal

> >

> > -----Original Message-----

> > From: bounce-snglist-64594@lyris.msfc.nasa.gov

> >

> [mailto:bounce-snglist-64594@lyris.msfc.nasa.gov]On

> Behalf Of NASA

> > Science News

> > Sent: Thursday, January 27, 2005 12:12 PM

> > To: NASA Science News

> > Subject: Sickening Solar Flares

> >

> >

> > NASA Science News for January 27, 2005

> >

> > The biggest solar proton storm in 15 years erupted

> last week. Here on

> > Earth, we were safe, protected by our planet's

> thick atmosphere and

> > magnetic field.  But what would have happened to

> an astronaut in space?

> > NASA researchers have the answer.

> >

> > FULL STORY at

> >

> >

>

http://science.nasa.gov/headlines/y2005/27jan_solarflares.htm?list64594

> ...............

> ========

> Hello all:

> 

> How very odd that NASA would compare 1 rem whole

> body from solar flares  

> which they erroneously equate to 10 dental x-rays at

> 0.1 Rem each!! One  

> would certainly hope NASA could do a better job of

> explaining radiation  

> exposure accurately than this.

> 

> According to the HPS Ask the Expert Question #1193

> at:

> 

> http://hps.org/publicinformation/ate/q1193.html

> 

> the dose equivalent of even a panoramic x-ray

> [highest dose dental x-ray]  

> is 26 micro-Sv [2.6 mR NOT 100 mR as NASA states].

> So NASA overstates the  

> dose from even a dental panoramic x-ray by a factor

> of about 40, and 1 Rem  

> whole body would be equal to about 400 panoramic

> x-rays. A single  

> intra-oral x-ray is about 10 micro-Sv [1 mR] dose

> equivalent. So compared  

> to the typical intraoral x-ray, NASA's estimate of

> 100 mR from a typical  

> dental x-ray is 100 times too high and 1 Rem whole

> body would be equal in  

> dose equivalent to 1000 intraoral x-rays.

> 

> Best,

> 

> Stewart Farber

> [203] 367-0791 [home office]

>

************************************************************************

> You are currently subscribed to the Radsafe mailing

> list. To

> unsubscribe, send an e-mail to

> Majordomo@list.vanderbilt.edu  Put the

> text "unsubscribe radsafe" (no quote marks) in the

> body of the e-mail,

> with no subject line. You can view the Radsafe

> archives at

> http://www.vanderbilt.edu/radsafe/

> 

> 





=====

+++++++++++++++++++

"It doesn't matter whether you're riding an elephant or a donkey if you're going in the wrong direction."

Jesse Jackson





-- John

John Jacobus, MS

Certified Health Physicist

e-mail:  crispy_bird@yahoo.com





		

__________________________________ 

Do you Yahoo!? 

Read only the mail you want - Yahoo! Mail SpamGuard. 

http://promotions.yahoo.com/new_mail 

************************************************************************

You are currently subscribed to the Radsafe mailing list. To

unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu  Put the

text "unsubscribe radsafe" (no quote marks) in the body of the e-mail,

with no subject line. You can view the Radsafe archives at

http://www.vanderbilt.edu/radsafe/