Archived posting to the Leica Users Group, 2006/08/08

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Subject: [Leica] [was] Another Altered Photo / now WAY OT
From: walt at waltjohnson.com (Walt Johnson)
Date: Tue Aug 8 11:44:06 2006
References: <9b678e0608071958h10427dcfudc6502c8eb3aa8ae@mail.gmail.com> <003401c6bad3$f3ec1900$6601a8c0@asus930> <4cfa589b0608080932w7f3589ceg9671179524dbabbe@mail.gmail.com>

And since I was a kid in  the 50's I been worried about Dr. Strangelove. 
If I'd only know U235 was so harmless I coulda been putting it on my cereal.

Adam Bridge wrote:

> Sigh - not BILLION years. Geesh. Come on guys at least TRY to get some
> half-life information correct.
>
> Here's a Wikipedia article on Deplete Uranium. You can search for more
> inflammatory or more sanguine articles with Google or your search
> engine of choice.
>
> <http://en.wikipedia.org/wiki/Depleted_uranium>
>
> As a beta emitter U-238's decay chain isn't too bad since, as long as
> it's external to the body your skin will block the high-energy
> electrons emitted. Taken internally, however, it's more problamatical
> but not nearly as nasty as the alpha-emitters whose high-energy helium
> nuclii can do serious damage. (The most common source of alpha
> emission is radon gas which is a naturally occuring decay product
> found from a variety of natural sources, not to mention the decay
> chains of fission products. In areas with lots of granite, for
> instance, having a radon detector in your home would make a lot of
> sense.)
>
> Adam
>
> On 8/8/06, G Hopkinson <hoppyman@bigpond.net.au> wrote:
>
>> Hang on Don.
>> This projectile has no magic burning through properties. It's all about
>> density vs cross section. Add that to high velocity and you have 
>> enormous
>> kinetic energy in the penetrator. The projectile will shed mass after
>> penetrating, plus the armour itself will add to the stream. It is also
>> pyrophoric so you would expect catastrophic heat along with the 
>> shrapnel and
>> spalled armour. An extremely lethal shower of very hot sharp material.
>> Regarding the radiation, it may be relatively benign to handle as you 
>> noted,
>> but the dust particles from a round impact are VERY bad juju should you
>> inhale them. That would be the least of your problems if you were 
>> sitting
>> within the target. Visiting it later would not be recommended either. 
>> It may
>> well be very toxic within the next few billion years or so.
>> Regarding the chain gun, it is a different but allied design to the 
>> rotary
>> barrel "gatling" designs. The principle benefits are simplicity and 
>> extreme
>> reliability.
>>
>> Cheers
>> Hoppy Gunny and M9 Guy
>>
>> -----Original Message-----
>> From: lug-bounces+hoppyman=bigpond.net.au@leica-users.org
>> [mailto:lug-bounces+hoppyman=bigpond.net.au@leica-users.org] On 
>> Behalf Of
>> Don Dory
>> Sent: Tuesday, 8 August 2006 12:59
>> To: Leica Users Group
>> Subject: Re: [Leica] [was] Another Altered Photo / now WAY OT
>>
>> Jerry,
>> >From a military perspective, depleted uranium is almost irresistable 
>> as an
>> anti-amour round.  The uranium literally burns through armour without 
>> the
>> extreme kinetic energy generally required.  Thus a 30mm chain gun can 
>> become
>> a heavy tank killer.  The military will not stop using it as it works 
>> too
>> well.  As I understand the spent rounds are primarily a Beta emitter 
>> so not
>> that hazardous as radioactive things go.
>>
>> Don
>> don.dory@gmail.com
>>
>>
>> On 8/7/06, Haussler, Gerald R - San Mateo, CA 
>> <gerald.r.haussler@usps.gov>
>> wrote:
>> >
>> > Gents;
>> > isn't Depleted Uranium (DU) nuclear waste ?
>> > seems to me the Pentagon found a use for that stuff
>> > about 15 years ago. i thought they stopped using it,
>> > but i now understand it continues.
>> > regards
>> > jerry
>> >
>> > ***************************************************
>> > used nuclear waste ;-)
>> >
>> > Lottermoser George wrote:
>> >
>> > > Shipping? ; ^ )
>> > >
>> > > Regards,
>> > > George Lottermoser
>> > > george@imagist.com
>> > > On Aug 7, 2006, at 2:02 PM, Walt Johnson wrote:
>> > >
>> > >> Sell it to the Saudis
>> >
>> >
>> > _______________________________________________
>> > Leica Users Group.
>> > See http://leica-users.org/mailman/listinfo/lug for more information
>> >
>>
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>>
>>
>>
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>
>


Replies: Reply from abridge at gmail.com (Adam Bridge) ([Leica] [was] Another Altered Photo / now WAY OT)
Reply from ricc at mindspring.com (Ric Carter) ([Leica] [was] Another Altered Photo / now WAY OT)
In reply to: Message from don.dory at gmail.com (Don Dory) ([Leica] [was] Another Altered Photo / now WAY OT)
Message from hoppyman at bigpond.net.au (G Hopkinson) ([Leica] [was] Another Altered Photo / now WAY OT)
Message from abridge at gmail.com (Adam Bridge) ([Leica] [was] Another Altered Photo / now WAY OT)