DaveE's latest activity
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DaveE replied to the thread Basic skills that kids are lacking.Just like my Group Theory example. Still very useful to some, but it wasn't to me. People will learn what they need to know. It's... -
DaveE replied to the thread Basic skills that kids are lacking.Why should they? Do you know how to milk a cow by hand, plow a field with oxen, shoe a horse, properly (or not) dispose of night soil...
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I have wondered about this. Are they really mutually incompatible? They all share the same math and the same experimental predictions...
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DaveE reacted to PeterDonis's post in the thread Undergrad "The wavefunction never collapses" with
Informative.
Different QM interpretations say different things about wave function collapse. Roughly speaking, at a high level, there are three... -
If possible connect the Y of snubbers mid-point to the neutral, avoid a ground connection. If no neutral, design delta a snubbers, or...
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Not at the motor terminals, but at the inverter output. The voltage switching outputs need to see an inductive load. Wind three...
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DaveE reacted to harveycannon's post in the thread How to measure the diameter of a shaft without a caliper? with
Haha.
😂 Thanks! I came here looking for a measuring trick and left with a cookie-based negotiation strategy. Fair trade, I might just have to... -
DaveE replied to the thread How to measure the diameter of a shaft without a caliper?.Maybe place the shaft on top of the best ruler you have and take a picture with your phone as perpendicular to the ruler as possible...
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DaveE replied to the thread Misc. Giving dog access to go potty when we're out.Ask a real Vet. They know more about this relatively common problem than me, you, and all of PF combined. Maybe they can help, maybe...
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DaveE reacted to sophiecentaur's post in the thread Why must residential electrical systems be connected to Earth (soil)? with
Like.
There is no simple answer to the earthing question but, in most permanent installations there can't really be any reason not to bond... -
DaveE reacted to DavidMiranda's post in the thread Hi everyone. Here to learn and pick your brain. with Like.
Hi, I'm David. I'm just your ordinary 40+ year old undergrad student in physics, studying for the sheer pleasure of learning, and the...
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DaveE replied to the thread Misc. Giving dog access to go potty when we're out.It's not a replacement for a real Vet, but the Merk Vet manual has good info...
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DaveE replied to the thread Misc. Giving dog access to go potty when we're out.Yes, OK, well both, I guess. I was really thinking of meds for incontinence. But yes, also check for illness like diabetes etc.
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DaveE reacted to DaveC426913's post in the thread Misc. Giving dog access to go potty when we're out with Like.
Because this is a full glass sliding door. I can't just cut a hole in it to insert a doggie door. (Googled example:) What they offer...
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DaveE replied to the thread Misc. Giving dog access to go potty when we're out.Why would you need to do that? Every pet door I've seen has a panel you can slide in place to block it closed.