DaveE's latest activity
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DaveE replied to the thread Malaysia Airlines Flight 370 crash.OK, really, I'm not trolling. I'm actually curious and a bit confused about the level of interest. What's the point? Why do we need to... -
DaveE reacted to QuarkyMeson's post in the thread Undergrad Which-Path from Global Momentum Measurement in Double Slit with
Like.
This is basically what you're asking: https://arxiv.org/pdf/cond-mat/0101157 A global momentum measurement of the screen only yields... -
DaveE replied to the thread Is it dangerous if there is a mains fault on a potable water pipe?.Which doesn't change my statement that metal water pipes must be grounded, accessible or not. Although nonexistence is a valid...
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DaveE reacted to berkeman's post in the thread Introduction: Non-physicist with speculative questions with
Informative.
Welcome to PF, @Mickey 6 -- You should have a look at this PF Insights article that applies to your situation... -
DaveE reacted to PeroK's post in the thread Introduction: Non-physicist with speculative questions with Like.
First, if you post your personal theory, then the thread will be deleted, as per the forum rules. Second, we get several people like...
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DaveE replied to the thread Is it dangerous if there is a mains fault on a potable water pipe?.Because you are probably standing on the ground when you touch things.
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I think long term storage gives chemistry time to work. Following the condensation of moisture, adsorption onto the internal surfaces...
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DaveE replied to the thread Is it dangerous if there is a mains fault on a potable water pipe?.In general yes. But it may depend on local codes. I really only know about California. The reason is that the utility transformer may...
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DaveE replied to the thread Electronics Failing While In Storage.I hear this popular attitude a lot, but I am very skeptical. Cheap parts aren't that predictable. I think the point is that the...
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DaveE replied to the thread Is it dangerous if there is a mains fault on a potable water pipe?.Yes, I think so. But your water utility will actually know the pertinent rules and the specific construction involved (like coatings and...
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DaveE replied to the thread Electronics Failing While In Storage.Consumer products are typically designed without regard to long life. If it lasted 5 years, you got what you paid for, storage time...
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DaveE replied to the thread Is it dangerous if there is a mains fault on a potable water pipe?.Plastic pipes don't require grounding (because you can't). Metal pipes do. If, in distribution, they switch between them, the metal must...
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Oh that's so sad. phinds was a great guy. What he didn't know about wood wasn't worth knowing.
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DaveE reacted to BillTre's post in the thread What causes the asymmetry in a symmetrically developing organism? with Informative.
The symmetry of eggs seems to be a point of misunderstanding. There is a big diversity in the symmetry of a pre-fertilized egg. To begin...
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DaveE reacted to Averagesupernova's post in the thread Is it dangerous if there is a mains fault on a potable water pipe? with Like.
This still could trip an RCD depending on the path of the current on the water pipe. The pipe from the house to the shutoff valve may be...