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Speck Tater Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Nov-15-09 05:30 PM
Response to Reply #20
35. Density =
Edited on Sun Nov-15-09 05:32 PM by Speck Tater
Density is mass per unit volume.
Relative Density, or Specific Gravity is what Archimedes shouted Eureka about, because it showed him the way to determine whether gold was pure or not without melting it down.

However, two alloys with the same density can not be distinguished by density or specific gravity alone. A mass spectrometer would only work by vaporizing a sample. But if you cut into the bar then you see, just by looking at the inside of the bar, that it wasn't gold all the way through.

Adding extra gold WOULD make the bar weigh as much as a proper gold bar, but it would also have a greater volume, so the density would still be off. That method would not work.
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  -Are your gold bars "tungsten salted" lovuian  Nov-15-09 03:31 PM   #0 
  - Alas, I have relatively few gold bars. (nt)  Posteritatis   Nov-15-09 03:34 PM   #1 
  - Gld ETF Warning, Tungsten Filled Fake Gold Bars  DJ13   Nov-15-09 03:36 PM   #2 
  - so I guess it is possible to fake out a person  lovuian   Nov-15-09 03:40 PM   #5 
  - Hmm... I'll check the next time I get down to my vault  htuttle   Nov-15-09 03:38 PM   #3 
  - Seen the price of tungsten lately? $13 a lb. or so?  Ikonoklast   Nov-15-09 03:38 PM   #4 
  - Assayed or melted  lovuian   Nov-15-09 03:41 PM   #7 
  - My gold bars have chocolate in them  XemaSab   Nov-15-09 03:41 PM   #6 
  - the best  lovuian   Nov-15-09 03:41 PM   #8 
  - If it's decent chocolate, it's worth more than some crummy tungsten!  Ikonoklast   Nov-15-09 03:50 PM   #14 
  - This is why my vault is exclusively filled with pennies.  Robb   Nov-15-09 03:42 PM   #9 
  - wouldn't it be somethin  lovuian   Nov-15-09 03:45 PM   #10 
  - I need tungsten to live! Tungsten!!!  Libertas1776   Nov-15-09 03:48 PM   #11 
  - What is more important to humanity: cannabis or tungsten  me b zola   Nov-15-09 05:16 PM   #34 
     - chocolate  lovuian   Nov-16-09 12:08 AM   #41 
  - Unfortunately the density of tungsten and gold are NOT the same (of course) ...  Techn0Girl   Nov-15-09 03:49 PM   #12 
  - 0.07 g per cubic centimeter  lurky   Nov-15-09 04:06 PM   #16 
     - It should be possible to make a tungsten/iridium alloy that weighs exactly the same as gold.  Speck Tater   Nov-15-09 04:20 PM   #19 
     - OH and P.S. that's also why there's mass spectrometry  ddeclue   Nov-15-09 04:26 PM   #22 
     - Yeah...  Techn0Girl   Nov-15-09 04:28 PM   #26 
     - I don't think "density" means what you think it means  Techn0Girl   Nov-15-09 04:20 PM   #20 
        - Density =  Speck Tater   Nov-15-09 05:30 PM   #35 
           - Googleing someting doesn't mean that you understand something....  Techn0Girl   Nov-15-09 06:50 PM   #36 
              - Does my MS in Engineering count?  Speck Tater   Nov-15-09 07:15 PM   #37 
                 - Aerodynamics isn't the same as metallurgy. I know that from the Google.  petronius   Nov-16-09 12:17 AM   #42 
                 - (quick aside) I have two friends, REAL rocket scientists, named Einstein  DainBramaged   Nov-19-09 03:12 AM   #45 
  - What's a gold bar?  liberal N proud   Nov-15-09 03:49 PM   #13 
  - Ironically, tungsten has many industrial uses, gold, not so much. Yet gold is vauled higher.  joshcryer   Nov-15-09 03:57 PM   #15 
  - Hardly!  Vinnie From Indy   Nov-15-09 04:59 PM   #31 
     - A $5.00 - $10.00 Voltmeter at any radio shack would catch the fake  Vinnie From Indy   Nov-15-09 05:03 PM   #33 
  - BY FAR the world's largest producer of tungsten is ... China.  eppur_se_muova   Nov-15-09 04:15 PM   #17 
  - Don't show my wife this thread, please  Dreamer Tatum   Nov-15-09 04:17 PM   #18 
  - .  XemaSab   Nov-15-09 11:45 PM   #39 
  - Ummm if you have doubts get a blow torch.  ddeclue   Nov-15-09 04:25 PM   #21 
  - "You got tungsten in my gold!"  Orrex   Nov-15-09 04:27 PM   #23 
  - Thanks for the heads up  Fla_Democrat   Nov-15-09 04:27 PM   #24 
  - My gold bars?  Individualist   Nov-15-09 04:27 PM   #25 
  - Yeah. I can state with certainty that none of my gold bars contain anything at all.  JVS   Nov-15-09 04:33 PM   #27 
  - Two of my favorite scams:  truedelphi   Nov-15-09 04:41 PM   #28 
  - I think this is the least of my worries. I ain't got no gold bars  NNN0LHI   Nov-15-09 04:41 PM   #29 
  - Tungsten Salted Gold Bars sounds like a delicious snack food!  NoPasaran   Nov-15-09 04:43 PM   #30 
  - This is a plot element from a novel, "Cobra Gold" by Damien Lewis  adamuu   Nov-15-09 04:59 PM   #32 
  - Neutron activation analysis should do the job of detecting tungsten  FarCenter   Nov-15-09 11:25 PM   #38 
  - OMG!!! there is a Gold Coin advertisement on this thread ROFL  lovuian   Nov-16-09 12:06 AM   #40 
  - I'm getting a tungsten ad - just hope none of that tungsten  petronius   Nov-16-09 12:21 AM   #43 
  - There is a big difference between certified investment grade gold and scrap gold and used jewelry  Monk06   Nov-16-09 12:43 AM   #44 
 

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