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- From: ken@sugra.uucp (Kenneth Ng)
- Newsgroups: sci.energy
- Subject: Re: Notch another one up for the Greennazis
- Message-ID: <1992Dec23.030636.6041@sugra.uucp>
- Date: 23 Dec 92 03:06:36 GMT
- References: <51588@seismo.CSS.GOV: <1992Dec12.044341.16500@sugra.uucp> <51637@seismo.CSS.GOV>
- Organization: Private Computer, Totowa, NJ
- Lines: 50
-
- In article <51637@seismo.CSS.GOV: stead@skadi.CSS.GOV (Richard Stead) writes:
- :In article <1992Dec12.044341.16500@sugra.uucp>, ken@sugra.uucp (Kenneth Ng) writes:
- :> In article <51588@seismo.CSS.GOV: stead@skadi.CSS.GOV (Richard Stead) writes:
- :> :In article<1992Dec5.045552.1667@sugra.uucp>,ken@sugra.uucp (Kenneth Ng) writes:
- :> The presumation I made was land and ocean have an equal probablity of having
- :> the plutonium particle land. I suspect that most of the rain comes down on
- :> the mountains alongside of oceans. This would make my estimate conservative.
- :> Does anyone know for sure?
- :_I_ know for sure! For cryin' out loud, do you just doubt any statement
- :that contradicts your presumptions? If you want to check it
- :out, grab any meteorology text. For trivia buffs, not only does most rain
- :fall on the oceans, most lightning occurs there, too.
-
- Well dude, I did look it up, it hardly contradicts my presumption. Source:
- The Water Encyclopedia, edited by Frits Van Der Leeden. Library id TD 351
- .V36 1990. Page 58. Annual precipitation on world ocean: 320 cubic km,
- on land: 100 cubic km. I had assumed 30 percent fell on land ( roughly
- 1/3 of the earth is land). By these numbers it is only 24 percent. Whoopie.
- Considering the 2 am or so gross estimates I was making in the original post,
- I counsider this noise.
-
- :> : Anyway, all this shows is that your example is a poor one
- :> :for evaluating the lethality of Pu.
- :> I was not evaluating the lethality of plutonium. In an article that is no
- :What?
- :The following, in your own words:
- :> :> need to traverse 9 square feet. I really suspect a lethality of 0.5 nanogram
- :> :> is really unrealistic.
- :Looks like an evaluation of the lethality of Plutonium to me.
-
- I assumed the 0.5 nanogram value was a realistic value to kill a person. I
- then figured out how frequent one would encounter such particles. Since the
- number was rather frequent, I surmised either: we are all dead and don't
- realize it, my modeling has some rather significant errors (and I am still
- not ruling them out, and I encourage those really interested in doing the
- math more accurately and post the numbers), or the original assumption is
- incorrect. What I did not try to evaluate is the true lethality of
- plutonium.
-
- :Pu is easily detected by its characteristic gamma energy -
-
- Plutonium is mostly an alpha and beta emitter. However, I do note in the
- CRC, there is an entry on the far right hand side indicating gamma energy
- intensity. The legend says something about annialiation with positrons,
- but I'm not sure exactly what that is and when it is prevalent.
-
- --
- Kenneth Ng
- Please reply to ken@eies2.njit.edu for now.
- Apple and AT&T lawsuits: Just say NO!
-