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Dr David Mills's posts Back to profile
9 posts total
Dr David Mills

Should #XrayMyAdvent come to the #fediverse this year?

Anonymous poll

Poll

Yes
21
65.6%
No
0
0%
Eh?
8
25%
Ooooh, a poll
3
9.4%
32 people voted.
Voting ended 27 Nov 2024 at 8:48.
26 Nov 2024 at 8:48 | Open on mastodon.social
Dr David Mills

The people have spoken - #Xraymyadvent will happen again. Here!

Right, now to figure out timed posting. And X-ray some festive things.

27 Nov 2024 at 9:24 | Open on mastodon.social
Dr David Mills

The temptation to edit a Wikipedia page to make it correct, but would require nested parentheses, the other editors might think I just pasted in a page of lisp code.

27 Sep 2024 at 8:02 | Open on mastodon.social
Dr David Mills

You know someone is setting up for some serious physics when the 50mm thick lead wall comes out to play.
#science

A lead wall made of interlocking lead bricks. It's 3 X 3 bricks in size, each brick is 50mm thick. It's on a bench in front of a machine with a radiation treefoil showing.
21 Aug 2024 at 10:09 | Open on mastodon.social
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Christine Burns MBE πŸ³οΈβ€βš§οΈπŸ“šβ§–

@Dtl One of these days there will be a particle that goes around corners and then everyone will be in trouble. Meanwhile I’d be worrying about radiation reflecting back off the far wall to come up behind the researcher πŸ˜‚

21 Aug 2024 at 10:20 | Open on mastodon.green
Cynthia
g7kse

@Dtl I'd like to call it Shield-o-tron please.

21 Aug 2024 at 10:30 | Open on mastodon.radio
Dr David Mills

Taking this out of a comment and into a thread of its own.

Is my heavy water still heavy? I have a bottle of 99% D2O, and it's hygroscopic, I don't know the history of it before I got it. It's about half full. It might have sucked in a lot of normal water from the air.

#science

A hand holding a brown bottle with a red cap and a white label. The label reads 20.03; BP 101.4 MP 3.8 C. D 1.12 Hydroscopic store under inert gas
A hand holding a brown bottle with a red cap and a white and red label The label reads Aldrich Deuterium oxide 99 atom percent D
13 Aug 2024 at 9:07 | Open on mastodon.social
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Vick Forcella β„’πŸŒˆπŸŒ³β„οΈβ˜‘οΈ:verifi

@Dtl You could make an icecube and see if it sinks in water. In theory Deuterium is stable contrary to Tritium. If it was 99% pure ten years ago and the lid was tight, it still is 99% now.

13 Aug 2024 at 9:22 | Open on mastodon.derg.nz
Marcus Phelan

@Dtl that’s a blast from the past. Thanks for posting.

13 Aug 2024 at 9:26 | Open on mastodon.ie
Anders Bruun stjal mit navn

@Dtl I was going to say that you're venturing dangerously close to philosophy with those kinds of questions.

13 Aug 2024 at 10:37 | Open on helvede.net
Dr David Mills

I love that if anyone asks "what geeky things can I do in London?" There are lots of replies saying Novelty Automation.

novelty-automation.com/

11 Aug 2024 at 16:54 | Open on mastodon.social
Adam

@Dtl Oh, that's fun. Been ages since I've been there, but was worth a visit.

11 Aug 2024 at 19:21 | Open on mastodon.social
Dr David Mills
Dr David Mills
Dr David Mills
Dr David Mills

Every warning label is a story someone tells somewhere.
#electronics #warningsigns

Photo of a circuit board with a large electrolytic capacitor. The capacitor has a bright orange label saying "Do not use capacitors as a handle"
14 Mar 2023 at 15:16 | Open on mastodon.social
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Alex Poe
Bernard Tyers

@Dtl That's excellent. If there was anything that shouldn't be used as a handle in a circuit board, i don't think you could choose anything worse than a cap!

15 Mar 2023 at 8:34 | Open on social.ei8fdb.org
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