[ RadSafe ] SI; Now or never?

[Jean-Francois, Stephane]

This discussion comes on a yearly basis on RADSAFE. Just for your info, even
in Canada where we are "SI", we do have "odd" sizes like my V-8 tomato juice
of 354 ml or Coca Cola of 355 ml....So what do you think is a 355 ml can of
Coke ??? Do you think this is real SI ? The only real conversion I see is
for milk where we have REAL 500 ml or liters etc. and of course for
regulatory issues like speed , radioactivity, dose rate etc.

But really I don't care about SI or non-SI, for Health Physics purposes.
Either way, there is always a factor you can use....only maths.

Stéphane Jean-François, Eng., CHP
Manager, Environmental and Health Physics services
Merck Frosst Canada
514-428-8695
514-428-8670
stephane_jeanfrancois at merck.com
www.merckfrosst.com




-----Message d'origine-----
De : radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] De la part
de Dimiter Popoff
Envoyé : Friday, February 17, 2006 8:46 AM
À : radsafe at radlab.nl
Objet : RE: [ RadSafe ] SI; Now or never?


John,
your two sets of wrenches example demonstrates that there are
serious issues associated with the units in use. BTW, I had not
thought of this problem; you can encounter English sized bolt
heads here, but seldom enough to write the issue off.
 In spectrometry, not that I would be unhappy to sell two
instruments instead of one - each per metric system - if I could,
but I cannot. :-) 
Just the slightest hint of any conversion problem or whatever
unit issue would mean a lost customer... (good we all count the
time in seconds, energy in eV etc.... and activity, well, I keep
this "user defined", no big issue inside a big software).

Dimiter

------------------------------------------------------
Dimiter Popoff               Transgalactic Instruments

http://www.tgi-sci.com
------------------------------------------------------


>  -------Original Message-------
>  From: John Jacobus <crispy_bird at yahoo.com>
>  Subject: RE: [ RadSafe ] SI; Now or never?
>  Sent: Feb 17 '06 15:08
>  
>  Consider the problem if you have two sets of wrenches
>  for working on your car, metric and English.  I do.
>  How many people in European and Asian countries do?
>  
>  I am still unit (and tool) "challenged."
>  
>  --- Dimiter Popoff <didi at tgi-sci.com> wrote:
>  
>  > I suspected something like that :-).
>  > My guess is that the radiation units are those
>  > taking about the
>  > least effort to switch. I doubt there are many
>  > people who
>  > grew up in the US and think millimeters rather than
>  > fractions
>  > of an inch, litres rather than gallons/pints
>  > (whatever....:-),
>  > kmph rather than mph etc...
>  >  The chip industry has made the move - they just
>  > specify
>  > dimensions both in millimters and inches, and, well,
>  > we all
>  > use Volts, Amps, Watts etc.
>  >  I do wonder how it is with temperatures. Those of
>  > the
>  > listmembers doing lab work must be used to degree
>  > Celsius (and/or
>  > Kelvin), however, when it comes to weather - do they
>  > still think
>  > Fahrenheit? My guess is they have developed a
>  > precise
>  > calculator to do the conversion a long time ago (I
>  > have
>  > to struggle every time I am confronted with degree
>  > F,
>  > although evenually I manage it... :-).
>  >
>  > Dimiter
>  >
>  >
>  
>  +++++++++++++++++++
>  "It is not the job of public-affairs officers to alter, filter or
>  adjust engineering or scientific material produced by NASA's technical
>  staff."
>  MICHAEL D. GRIFFIN, NASA administrator.
>  
>  -- John
>  John Jacobus, MS
>  Certified Health Physicist
>  e-mail:  crispy_bird at yahoo.com
>  
>  __________________________________________________
>  Do You Yahoo!?
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