[Beowulf] Re: ECC Memory and Job Failures (Huw Lynes)

[Douglas J. Trainor]

those veteran pilots in terms of hours logged at high altitude, you  
start to see a particular kind of leukemia.  these are older pilots  
and Concord is not a big concern because it flew for only 27 years and  
the flights are shorter and there are more conventional planes.

there are also some counter-intuitive aspects, where light doses of a  
particular type of radiation, say x-rays, does *not* reproduce the  
higher level of DNA repair mechanisms with a heavier dose.

there are some recently reported accounts from astronauts having seen  
amazing lights.  the lights occurred regardless of whether the  
spacecraft windows were open or not, from the Van Allen radiation  
belts they said in the story.  however, i thought the belts started at  
200 km.  anyway, windows closed or eyes closed, they got the light show.

every now and then, they velcro a politician to the walls from the  
nausea.

	douglas

On Apr 24, 2009, at 2:55 PM, Geoff Jacobs wrote:

> John Hearns wrote:
>> 2009/4/24 Prentice Bisbal <prentice at ias.edu>:
>>> Last time this issue came up, he included links to several papers on
>>> this topic published by Boeing. As you go up in the atmosphere, the
>>> [prevalence|probability|concentration] of cosmic rays goes up
>>> significantly. Boeing has done a lot of research on this topic,  
>>> since it
>>> can affect the operation of their [products|weapons].
>>
>> I don't have time to Google at the moment - I'm making obeisances at
>> the altar of a supercomputer - but wasn;t there a large dose for  
>> every
>> Concorde flight? Did the flight crew have to wear radiation badges,  
>> or
>> am I going dotty in my old age?
>
> Not much of a dose at all. They had detectors on board to quantify
> exposures.
>
> http://www.nytimes.com/1990/03/01/opinion/l-don-t-worry-about-air-travel-radiation-doses-concorde-no-riskier-105790.html
>
> -- 
> Geoffrey D. Jacobs