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DaveE's latest activity
DaveE
replied to the thread
Defining Analog Computer Power
.
Back when digital computers were just a glint in the eye of Alan Turing and the like, Claude Shannon was measuring information as bits...
Jul 18, 2025
DaveE
reacted to
berkeman's post
in the thread
I
What areas of maths and physics do I need to understand explosion physics?
with
Informative
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What is your interest in studying blast physics? Are you wanting to better understand blast injuries? Or are you wanting to understand...
Jul 16, 2025
DaveE
reacted to
DaveC426913's post
in the thread
Wood/Glass/Metal
Doggie- lovers: what do dogs like? Ramp or step?
with
Like
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Thanks, This is a great array of options. Hadn't even thought of using the tow hitch.
Jul 16, 2025
DaveE
reacted to
jasonRF's post
in the thread
Engineering
Physics Major Considering Masters in EE -- Need help!
with
Like
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I have been an EE in industry for 25+ years, and have worked with very few EEs who were PEs. It just is not required for most jobs...
Jul 15, 2025
DaveE
replied to the thread
Wood/Glass/Metal
Doggie- lovers: what do dogs like? Ramp or step?
.
Most steps you can buy are a bit too small for larger dogs. Different dogs will have different preferences. They will also likely need...
Jul 15, 2025
DaveE
reacted to
kuruman's post
in the thread
Spherical conducting shell enclosing a non-conducting core
with
Like
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Start by considering what the electric field is at ##b<r<c##, i.e. inside the conducting material. What does Gauss's law have to say...
Jul 14, 2025
DaveE
replied to the thread
Ground loop on electronic audio systems
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Yes, 100% agree. The grounding of shields in cables can be really complicated in practice. In more complex cables, I have sometimes just...
Jul 14, 2025
DaveE
reacted to
Averagesupernova's post
in the thread
Ground loop on electronic audio systems
with
Like
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Truth is that there normally can be ground currents on the shield of coax cables that go unnoticed. The nature of a concentric shield...
Jul 14, 2025
DaveE
replied to the thread
Ground loop on electronic audio systems
.
Honestly, there are way too many reasons that currents may be flowing on "ground" wires/traces to have a simple answer. Yes there are...
Jul 14, 2025
DaveE
reacted to
Rive's post
in the thread
Ground loop on electronic audio systems
with
Like
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Yep. Power supplies here usually starts with these: Then, whether the PE is properly connected: the filter is properly implemented, in...
Jul 14, 2025
DaveE
reacted to
Baluncore's post
in the thread
Ground loop on electronic audio systems
with
Like
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There is no such thing as zero impedance, or a vanishing voltage. A conductor will always have some inductance, and there will always be...
Jul 14, 2025
DaveE
replied to the thread
Not a sundial - a shadow dial is what I want
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Maybe something like these apps. I'm sure there's many others, I just saw these first. https://shademap.app/ https://app.shadowmap.org/
Jul 12, 2025
DaveE
reacted to
Baluncore's post
in the thread
I
Shielding behavior of a steel cuboid in a DC magnetic field
with
Like
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Welcome to PF. I suspect that the longer flux path increases the reluctance, so reduces the shielding. Try thickening the long-side...
Jul 10, 2025
DaveE
reacted to
Greg Bernhardt's post
in the thread
Too much fluoride might lower IQ in kids?
with
Like
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I think the underlying assumption is that some segments of the population don't reliably use toothpaste. Adding it to water is a bit of...
Jul 9, 2025
DaveE
reacted to
Vanadium 50's post
in the thread
Too much fluoride might lower IQ in kids?
with
Like
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If the Voxsplainers told me my mother loved me, I would want to check it out.
Jul 9, 2025
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