Quote:
Don't bother doing that...
Problems that would disturb the meassuring:
1. Air trapped in the rad when reading the waterlevel.
2. Water or something else in the rad when putting it in the water and therefore adding to the water already in the bucket.
3. No water or any other stuff in the rad when weighting it.
and then... if you manage to pull those off... You would still have to get measurments that differed first on the third decimal. Because the density difference between brass and copper is so small. That would require pretty good instruments... But hey... stay creative..
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*shrugs*
Would work, you just have to be careful with the air bubbles naturally. Though you should be able to get most of them out, same with empting the liquid already in. shove it in the airing cupboard over night after rinsing and blowing air through it.
We used some sort of measuring bucket in Physics, years ago. A beaker with a ruler shoved in it when we did density experiments.
As long as the "bucket" is a cylinder, i.e. it doesn't get bigger as it goes up you just measure the diameter and what the water level was BEFORE and AFTER, you have the volume to a pretty accurate degree.
the thinner the "bucket" and the larger the heatercore the more accurate the final answer will be.. do a few tries and take the average (you'll have to dry off the heater core in the mean time though)
I recon you could get a reading within +/- 2%. Heck all you are looking for is if the density is closer to one rather than the other giving you the amount of copper in the thing.
If the density reports to 0.312 you can safely assume it has got copper in its make, and there is a high chance that it's core is copper.
Add that to the fact it's a wonderfully longwinded way to go about it and since most people jumped into water cooling because they wanted a challenge, and if you have the equipment I say way NOT go for it.
I for one will want to know if my Black Ice is indeed aluminium as I suspect and not copper as they claim because I think the thing is just too damn light.
~ Boli
(Finding out the hard way he forgot to pull the plug out of the PSU)