You could probably get away with a transient setup if you pass it over something like an oil-flow visualisation medium. The flow changes direction over each oblique shock, so there should be sharp corners in the traces. And that's likely safer anyway, because the observer doesn't have to get near the exhaust while it's moving at supersonic speeds, and the exhaust doesn't have to be hot enough to glow for visibility. Run the demo with everyone a safe distance away, then bring over the oil plate for everyone to see the streak pattern.
The problem is you only get diamonds in an overexpanded supersonic jet (i.e. lower pressure than ambient air), which means you need a good idea of what the properties of the high-pressure combustion products would be so you can design an appropriate nozzle to bring them down to below-ambient pressures. These combustion products are probably highly nonuniform and may even still be reacting as they pass through the nozzle, so the problem of nozzle design would be trickier than in steady flow.
@freemo Hi there Freemo, if I may make a suggestion, I would recommend trying to incorporate wavelet analysis rather than Fourier analysis for this particular application, as the wavelet transform allows for some temporal specificity on signals that vary over time, while still allowing you to access the frequency data you need. It's incredibly useful, and you may even be able to use a matrix factorization approach with the resultant data to pull out key points of interest and recommend stocks based on the behaviors of other stocks, assuming you have the processing power and access to relevant data. Here is a link to a paper I recently read on the topic regarding this application in brain networks, as well as the Wikipedia page to wavelet transforms, and a video on the application to financial time series analysis. Feel free to ask any questions you may have and I'll try to respond soon :)
https://en.wikipedia.org/wiki/Wavelet_transform
If you arent using a Cooley-tukey Fast fourier Transform to analyze your stock data can you really say you know how to buy/sell stocks? :)
Integrating fourier analysis into my Algorithmic Trading that I've been doing. I really should have done this much sooner.
For a while now i've had this nagging need to produce a small scale device capable of producing and demonstrating Shock Diamonds. No interest in efficiency or using it for propulsion or anything. I really just want people to be able to see shock diamonds up close and safely.
Anyone here every listen to Corky Siegel? I feel like they arent really well known at all, I'm not a fan myself but Woofy girl Stroll amuses me, and that whole album including Train is really good.
@nemo I think we need to convince exam boards such as https://qualifications.pearson.com/en/qualifications/edsq/entry-level-and-level-1-in-eds.html who run basic skills courses to include proper mention of the fediverse, they mention Linux at least in the latest draft spec. I am trying to get in touch to correct that to GNU / Linux.
@karangrep @nemo you may want to follow @aral , Aral is working on small-web which is an interesting project
@freemo @Diptchip @Science
Love the parable.
I read something similar the other day.
https://lukesmith.xyz/articles/chess.html
Philosopher: "For all your science your beleifs are no better than a flat disc on the back of elephants resting on a turtle's back"
Astronomer: "Even without science that makes no sense, what is the turtle resting on top of!"
Philosopher: "Another turtle, its turtles all the way down!"
Astronomer: "See, that is just absurd, how could anyone believe that!"
Philosopher: "What does your science say keeps the earth and the moon fixed to each other?"
Astronomer: "Gravity, the moon orbits around the earth, or rather, the center of mass between the earth and the moon, its just an orbit"
Philosopher: "Then what does your earth orbit?"
Astronomer: "The center of the solar system."
Philosopher: "And the solar system?"
Astronomer: "The center of the galaxy!"
Philosopher: "And where does it end, what is at the end of this logic"
Astronomer with a defeated look on his face: "Its orbits, just orbits... It.. is... orbits, all the way down."
::Philosopher smiles::
@mnmlsm
pv - Pipe Viewer - is a terminal-based tool for monitoring the progress of data through a pipeline.
@khird Excellent job this week getting rid of spam accounts that had never posted. Lot of time you invested, very much appreciated.
Jeffrey Phillips Freeman
Innovator & Entrepreneur in Machine Learning, Evolutionary Computing & Big Data. Avid SCUBA diver, Open-source developer, HAM radio operator, astrophotographer, and anything nerdy.
Born and raised in Philadelphia, PA, USA, currently living in Utrecht, Netherlands, USA, and Thailand. Was also living in Israel, but left.
Pronouns: Sir / Mister
(Above pronouns are not intended to mock, i will respect any persons pronouns and only wish pronouns to show respect be used with me as well. These are called neopronouns, see an example of the word "frog" used as a neopronoun here: http://tinyurl.com/44hhej89 )
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