DaveE's latest activity
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DaveE reacted to Baluncore's post in the thread 12 year old seeking feedback on multi-element blade alloy with
Like.
Welcome to PF. The elements you add to an alloy, do not work to average all their properties. It is specific combinations of elements... -
DaveE replied to the thread Undergrad Higher magnification calibration slide.I wonder if you could use a diffraction grating instead of a calibration slide? The spacing will be well known and much smaller. Less...
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DaveE replied to the thread Undergrad Higher magnification calibration slide.There are both types. The eyepiece version is normally called a reticle. He's referring to a calibration slide on the stage (stage...
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DaveE reacted to SiennaTheGr8's post in the thread Graduate Rotating Disk Method to Attain Light Speed? with Like.
Here is a demonstration:
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DaveE reacted to BillTre's post in the thread Request for a new History of Science subforum with Like.
OK, to start: These to fun and games: Programming Jokes: Lame, Science & Math Jokes! Bad Math Jokes These in General Discussion seem...
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No offense taken. We just strive to keep the signal-to-noise ratio very high here, so spitballing ideas is not consistent with that...
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A stock car racing Saturday night will have a right front tire temperature up to 225° F tread temperature. Inside the tire will be up to...
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DaveE reacted to berkeman's post in the thread Cool weather experience - echos off clouds with Like.
It could be that an inversion layer formed at the same time (I don't know if inversions create clouds or vise-versa of if they are even...
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The table appended to post 17 is probably correct, but it may leave a reader with the wrong impression. Helium is difficult to contain...
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DaveE replied to the thread YouTube Classics, Part Deux.Truly a classic, this one.
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DaveE reacted to .Scott's post in the thread Undergrad How many carriers for phased array? with Like.
I think you might as well go with two carrier frequencies. Either way, you will need two beam-forming circuits that are independently...
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DaveE replied to the thread Need help with pressurized air.Yes!!! As everyone here has said, it's about the water, not the gas (although I wouldn't use Helium). Not so much. Also, remember air...
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Possibly noteworthy: The water content of compressed air is typically 'saturated.' This can be misleading. The vapor pressure of water...
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Nitrogen behaves the same as dry air. In both those cases, the number, n, of molecules of gas in the tire remains constant. Given an...
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Woo-wee! That is one call that would have been pretty challenging for me. Serious props and kudos to the FFs who climbed that crazy...
