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Dr David Mills

Now with 6uL of heavy water.
It's heavier!
5.3791mg #science
13 August at 9:14 | Open on mastodon.social
11 comments
Andrew Zonenberg

@Dtl Relative density of 1.124? I'm gonna say your heavy water is still pretty pure.

13 August at 9:17 | Open on ioc.exchange
Dr David Mills

@azonenberg I'm impressed it came out so well, I had expected this to be contaminated with light water.

13 August at 9:21 | Open on mastodon.social
Dr David Mills

I did a couple of other measurements of each of these, they came out the same to 2 decimal places. Must get the pipette calibrated again.

Running the numbers we get

5.38 / 4.78 = 1.125

Or near as dammit 1.12 for the density of this heavy water. If it had absorbed much normal water it would be less dense, so I can assume that within the limits of a 10 min experiment on a Tuesday morning before my second cup of Tea, that this heavy water is pretty pure.

#science

13 August at 9:18 | Open on mastodon.social
Ben Hardill

@Dtl it's definitely going to make for an interesting 2nd cup of Tea.

Does it impact the taste like hard/soft water?

13 August at 10:00 | Open on bluetoot.hardill.me.uk
Dr David Mills

@ben Wikipedia claims it tastes slightly sweet.

13 August at 10:16 | Open on mastodon.social
Allen Very Serious Versfeld

@Dtl How do you measure such tiny volumes? We got to use pipettes a little in high school chemistry but microliters? That's so small, I'd imagine that surface tension would keep trying to pull your sample back into the container? Is that a thing?

13 August at 9:21 | Open on mastodon.monoceros.co.za
Dr David Mills

@uastronomer It's a disposable tip quite hydrophobic and we push the liquid out with a small amount of air.

13 August at 9:22 | Open on mastodon.social
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