Hi, Mike,
I haven't the background to comment on the calculations but don't doubt
that your conclusion is correct. I posted without comment simply
because I thought some members might be interested; glad you were
sufficiently to challenge the claims. We need such expertise.
Thanks.
Related topic: I read in a great Reader's Digest hardcover book on a
"back to nature" theme that the best, simplest water purification kit
for hikers and survivalists is a small, clear screw-top jar with five
grams of resublimated iodine crystals. I have never heard the term
"resublimated" and hope our pharmacist Mr. R. Harris can enlighten us.
Bottom line: one bottle of these crystals can be used ONE THOUSAND
TIMES. Fill up the jar with any old water and shake it. Three tsps.
of shaken water can purify a quart in 20 minutes. Remarkable, I
think. Seems to be a modest supply of these crystals would last the
average family for decades. They are available only from a pharmacy
I read.
Interesting. I want some of these crystals in case of emergency.
JBB
Samsung is a Korean company, incidentally.
On Sunday, Aug 22, 2004, at 00:24 Asia/Tokyo, Mike Monett wrote:
CS>Sterile wash?
From: Jonathan B. Britten
Date: Sat, 21 Aug 2004 05:04:56
Silver ions in washing machines:
http://www.samsung.com/Products/WashingMachine/Bigwash/
WashingMachine_Bigwash_H1245AS.htm
JBB
Hi Jonathan,
Quote from the article:
"Bigwash H1245AS Silver Nano Technology"
"Like a bath of beauty for your fabrics, Samsung's Silver Wash is
an advanced washer with superb germ killing capabilities. Imagine
400 billion silver particles dissolved in water to make a super
cleaning solution that affects your clothes on an almost molecular
level. its purification ability of 99.9% and lasting antibacterial
action will redefine your idea of immaculate."
http://www.samsung.com/Products/WashingMachine/Bigwash/
WashingMachine_Bigwash_H1245AS.htm
Sounds more like hogwash. 400 billion silver ions weigh 7.16E-08
milligrams. If the washer holds 10 gallons of water, it would have a
silver concentration of 1.89E-09 ppm, which is below the limit of
detectability. The Mercury calculations are shown at the end.
Another problem is trying to preserve silver ions in dirty, soapy
water. There are so many contaminants it is highly doubtful an ion
would last longer than a couple of nanoseconds.
The Japanese apparently favor silver for its antibacterial
properties. But this approach clearly has no possible benefit.
--------------------------------------------------------------------
Here is the Mercury solution. This shows the value of Mercury in
solving problems without having to rewrite the equations each time.
This is slow, highly error-prone, and difficult to troubleshoot.
Here are the conversion factors:
Cou = I * sec ; total number of Coulombs
esec = I / 1.60217733e-19; electrons per second
gm = k * I * sec ; Faraday's equation
isin = esec / sqin ; ions per sq. in. per sec
isnm = isin / 6.45e14 ; ions per square nanometer per sec
k = 107.868 / 96485 ; Coulombs required per gram of silver
lt = 3.785 * gal ; convert gallons to litres
lt = ml / 1000 ; convert millilitres to litres
mg = gm * 1000 ; convert grams to milligrams
ml = 29.57 * oz ; convert ounce to milliliters
mnt = 0 ; minutes
phr = ppm / hrs ; ppm per hour
ppm = mg / lt ; 1 ppm is 1 milligram per litre
sec = hrs * 3600 + mnt * 60 ; convert hours to seconds
uAin = 1e6 * I / sqin ; current density in uA per sq in
These are the variables:
gal = 10 ; water capacity
hrs = 1 ; dummy calculation
Ion = 400e9 ; number of silver ions
Ion = esec * sec ; electrons per second * number of seconds
sqin = 2 ; dummy calculation
Here is the Solution:
Cou = 3600*I
= +6.40870932000000E-08
I = +1.78019703333333E-11
sec = +3600.0000000000000
esec = 6.24150636309403E+18*I
= +111111111.111111
gm = 4.02471679535679*I
= +7.1647888991010E-11
k = +0.00111797688759911
isin = 3.12075318154701E+18*I
= +55555555.555556
sqin = +2.0000000000000000
isnm = 4838.3770256543*I
= +8.6132644272179E-08
lt = +37.8500000000000 { = +757 / 20 }
gal = +10.000000000000000
ml = 29.57*oz
= +37850.0000000000
mg = 4024.71679535679*I
= +7.1647888991010E-08
oz = +1280.01352722354
mnt = 0.0000000000000000
phr = ppm
= +1.89294290597120E-09
ppm = 106.333336733337*I
= +1.89294290597120E-09
hrs = +1.0000000000000000
uAin = 500000*I
= +8.9009851666667E-06
Ion = +400000000000.00000
Best Wishes,
Mike Monett
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