[ARC5] Yamato

[J. Forster]

It took a lot of US effort to make isotopically pure Uranium. (Manhattan
Project).

I'd bet the Japanese used only chemical means to separate their Radium, so
it is, at best, a brew of many things, and it would make an MCA screen
look like a corn field.

YMMV,

-John

============


> Sorry to say it is hotter than a firecracker on the 4th of July as my
> father would say.
> Most paints used radium 226 because the others had too short of half life.
> Besides alpha particles it emits 186 keV gamma rays which can penetrate
> the
> skin.
> Here is a quote from
> http://www.orau.org/ptp/collection/radioluminescent/radioluminescentinfo.htm
> "Over time, the intensity of the glow from the paint will decrease because
> of the damage caused to the ZnS crystals by the alpha particles.
>   Since radium-226 has a 1600 year half life, its decay is not a
> significant factor."
>
> Since I work with a linear accelerator ( I should said worked, I just
> retired) I did check it with our portable
> detectors.
>
> The problem is that  the phosphor burns out after some time and it appears
> to be harmless.
>
> 73
> Bill wa4lav
>
>
> At 06:26 PM 3/23/2012 -0400, Todd, KA1KAQ wrote:
>>On Fri, Mar 23, 2012 at 1:15 PM, Kenneth G. Gordon
>> <kgordon2006 at frontier.com
>> > wrote:
>>
>> >
>> > Well, from what I have seen, Japanese technology was what I would
>> > consider a very curious mix of up-to-date, and very outdated
>> technology.
>> > For
>> > instance, one of the links provided on this list some time ago lead to
>> a
>> > U.S.
>> > Army intelligence report on Japanese radar. Information included
>> mentioned
>> > that their inter-deck cabling was extremely crude with no protection
>> for
>> > that
>> > cabling, it simply being fed through holes in the deck. No "grommets"
>> or
>> > strain reliefs. Some of the cabling was in quite large bundles too.
>> >
>>
>>
>>That combined with the lack of emphasis placed on even using RADAR
>>certainly shows why they were caught flat-footed a lot of the time after
>>Pearl Harbor.
>>
>>
>> > Wasn't that the "Musashi"?
>> >
>>
>>Yep, that's the one. But it was sunk during the war too. The Nagato was
>> the
>>ship present at Bikini. Still took a pair of shots to sink her. Makes
>> sense
>>that Yamamoto's flagship for the Pearl Harbor attack would be a good
>> symbol
>>for atomic testing, but in hindsight - what a museum/war trophy to have
>>available today.
>>
>>There probably wasn't a lot of appetite for having anything from the
>> enemy
>>preserved for the public at that point, particularly that ship. Kudos to
>>the commies, they preserved one of the two Maus tanks that were fielded
>> at
>>the end of the war. Bet they have a lot of other goodies squirreled away
>>still.
>>
>>~ Todd,  KA1KAQ/4
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