[meteorite-list] Specific Gravity method /calculation error

From: Roman Nakonechny <uraninut239__at_meteoritecentral.com>
Date: Thu Apr 22 10:31:20 2004
Message-ID: <Law9-F1014fxUG0DpWh00036f3a_at_hotmail.com>

Thanks John. A visit to our great ally France oughtta git yew metricized
mighty quick-like . The delta component of your calculation cause a Cold
Fusion Reaction inthe coffee can and now there's a great depression in the
earth where my suburb used to be.We need to get our stories straight, John.
={:-)> L A T E R ~~~~~~~~~~~*Roman



>From: j.divelbiss_at_att.net
>To: uraninut239__at_hotmail.com
>CC: meteorite-list_at_meteoritecentral.com, Subject: [meteorite-list] Specific
>Gravity method /calculation error
>Date: Tue, 03 Feb 2004 12:39:52 +0000
>
>Roman and others,
>
>I guess I really am slow/dumb. your SG answers maybe too small right now...
>
>Well if you haven't blown anything up...I'm lucky. My calculation has an
>error in it from the other day. In the volume part of the equation I left
>out
>the division by 4 when using the diameter for area. If you use the
>radius(1/2
>diameter)...then you don't need the 4. The corrected method is below:
>*******************************************************************
>
>Then I use a cylinder(round) shaped coffee can for small items, or a
>straight
>sided bucket for larger items to determine the volume of the object by the
>change in height of the water: first without the object and then with the
>object. As a slow American I use a stick rule in inches to figure this out.
>
>so it goes like this:
>
>determine weight in OUNCES
>
>Determine the change in volume in the water level by measuring the:
>HEIGHT without object first
>HEIGHT with the object second
>
>The difference in height in inches is then used to calculate the SG along
>with some conversions factors to get it into grams/centimeter cubed.
>
>change or delta Volume = Area of container circle x inches in
>height(change)
>delta V =(pie or 3.14...)x diameter(inches) squared)x(height change in
>inches)/4 (Note: this is where I has left out the 4)
>
>delta V is a number in inches cubed
>
>the conversion formula without all the details is as follows:
>
>SG = (object in OUNCES/delta V in inches cubed)x(0.06102/0.03527) = SG in
>grams/cm cubed (Note: without the 4 your SG answer would have been 4
>times smaller)
>
>0.06102 is the conversion of cubic inches to cubic centimeters
>0.03527 is the conversion of ounces to grams.
>
>For the smart users of metric the metric system....the answer is determined
>by the change in volume in cubic centimeters cubed and the weight in grams
>or:
>
>Weight in grams/change in Volume in centimetes cubed (now that seems easier
>doesn't it) = grams/cm cubed
>
>Bottom line is most rocks have SG of 1.5 to 3, heavier rocks full of iron
>
>like stony meteorites are in the 3 to 5 range, and steel and it's metal
>friends like iron meteorites are in the neighborhood of 7 to 8. Silver and
>Lead in the 10 to 11 range and gold all the way up near 18 to 19.
>
>Sheesh,
>
>John
>
>
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Received on Tue 03 Feb 2004 10:52:32 AM PST