DaveE's latest activity
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DaveE replied to the thread Today I Learned.All they did was show that you could put unoxygenated perfluorocarbon liquid in someone's butt for 60 minutes without undo harm. No... -
DaveE replied to the thread Series motors, switched to parallel.EE design in real life requires A LOT of research and study, mostly of the subtle details of the components you might use. Also study of...
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DaveE reacted to Averagesupernova's post in the thread Series motors, switched to parallel with
Like.
I do believe I'm finished here... -
Welcome to PF. In series, the motors will have the same current, and so the same torque. In parallel, if the shaft is unloaded, the...
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DaveE replied to the thread Peltier thermopar for hand heat charging battery.https://www.coherent.com/materials/rare-metals/thermoelectrics
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DaveE reacted to russ_watters's post in the thread Peltier thermopar for hand heat charging battery with Like.
That isn't true. The entire body puts out about 70W of heat. The surface area of a hand is probably 1% of the entire body. And...
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DaveE replied to the thread High School How much lower would a sheep be expected to jump if on a steep upward slope?.The direction of maximum slope (minimum? IDK). Arg(-grad(h))=0 where h is the height of the ground. If you're a nerd. Downhill. If...
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DaveE replied to the thread High School How much lower would a sheep be expected to jump if on a steep upward slope?.Does the slope really matter? What if the sheep is moving perpendicular to the fall line when they get to the fence?
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DaveE reacted to WWGD's post in the thread Physics How to close the gap: From Independent Research to Academic Discourse with
Haha.
He's just a poor boy, nobody loves him. -
DaveE reacted to fresh_42's post in the thread Physics How to close the gap: From Independent Research to Academic Discourse with Like.
Your request is not about publishing. To publish something is easier than ever. What you really want is to be read. This means you...
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@solvejskovlund -- Do you understand my comment/admonishment/warning? From your previous PF posts I know that you do not have much...
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DaveE replied to the thread Do light bulbs store energy?.OK. We don't know. Neither do you. That's how it goes with experiments that aren't scrupulously controlled. The fact that they all...
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DaveE replied to the thread Do light bulbs store energy?.The only energy an incandescent bulb can store is the thermal energy of the hot filament. This energy will dissipate quickly and isn't...
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DaveE replied to the thread News Weird News Compilation.Yes. Plus you can't program human fallibility and irrationality in advance. Driving with humans is a very human experience. Merging...
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According to Google AI: You generally should not apply new silicone over old silicone for a long-lasting, watertight seal because oils...
