c517402

9 ms·

31.
by c517402 9y ago
I know good ol' boys who stick to beer, whiskey, and a little weed who regularly cull the duck, quail, deer, and wild pig populations to keep them from overbreeding. Mostly, they leave the coyotes alone because they keep the rabbits an
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by c517402 9y ago
The Geometric Algebra version of Kramer's rule is one of coolest most insightful things I've seen. Good examples can be found in the opening chapters of "Geometric Algebra for Computer Science" by Dorst, Fontijne, &
33.
by c517402 9y ago
IIRC when Intel was in the business of building educational add ons to desktops, they produced some microscopes something like these.
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Experiment Reveals No Detectable ‘Greenhouse’ Difference Between CO2 and Air(notrickszone.com)
2 points by c517402 9y ago|0 comments
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by c517402 9y ago
Administrative bloat isn't just a problem at the University level, but across all levels of education in the US.
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by c517402 9y ago
LEDs and photovoltaics are both PN junctions. I wonder why they don't mention making better photovoltaics, or why their landscape function can't be used to improve photovoltaics.
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by c517402 9y ago
I think there is a perspective that has been overlooked in these comments. It is that the "professors' unprofessional programs" are probably very understandable to someone who deeply understands the science/engineering c
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by c517402 9y ago
IMHO, there is no Software Engineering. There is only Computer Science. There is none of the discipline that comes from engineering, and only the messiness that comes from science. The heroes in software are Computer Scientists and everyon
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by c517402 9y ago
Let's not get crazy. Sharks? Of course, it's Dolphins.
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by c517402 9y ago
IMHO, the first problem of summing a generalized array of numerical elements is not best solved recursively. I suggest sum(flatten( )) is better and uses less overhead. The subsequent problems under discussion more strongly require recursio
41.
by c517402 9y ago
And yet the wild population still needs to be controlled. http://www.smithsonianmag.com/science-nature/a-plague-of-pig...
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by c517402 9y ago
I have personally been producing particles that are there own anti-particles since childhood. And, I continue to do so as I write this comment. Photons!
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by c517402 9y ago
If you follow your Wikipedia link and then follow the link for Green's function two times, you come to the article that points out that Green's function methods only work on linear differential equations. The multipole method you
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by c517402 9y ago
IIRC Feynman was also concerned about the infinities as well, but ultimately pragmatic. The infinities bother me as well. But, on reflection classical point particles produce forces that approach infinity as they become close, so the quanta
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by c517402 9y ago
"untreatable infinities in calculations of particle interactions due to the possibility of point particles coming arbitrarily close to each other." This is actually very misleading. As mentioned in other comments, QED has "in
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by c517402 9y ago
It seems like the correspondence should be something other a-z. Something like making the vowels or more common letters more distinctive. E.g., making the vowels the lightest weight, that is make aeiou use the single dot letters dotsies us
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by c517402 9y ago
Brazilian School of Cosmology and Gravitation, Rio de Janeiro, Brazil http://www.ceacbrasil.com/bscg/ Unfortunately, not there this year.
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by c517402 9y ago
Old Cray computers had the best memory bandwidth when the fast dimension of an array was of length 64*n +- 1.
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by c517402 9y ago
There was a time when a good Liberal Arts education included Calculus because it was considered one of the great achievements of Western Civilization. The article says, "Their thinking has led to initiatives like Community College Path
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In 1995, this astronomer predicted the Internet’s greatest failure(medium.com)
9 points by c517402 9y ago|2 comments
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by c517402 9y ago
This article is great and IMHO is an example of the internet at its best. The article author, who knew and understood the intellectual development of the book where 'open recursion' was first used, explained, in the context of the
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by c517402 9y ago
The article does a very poor job of describing her work. Does anyone have links to something understandable?
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by c517402 9y ago
So, the diabetic guy goes to McDonalds and they are out of ice as well. He explains his predicament to the manager who says, "Sure, we will sell you a bag of ice when our machine has made more." But, then there is a nice big compe
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by c517402 9y ago
Texas State Highway 130 - You can pay the toll, drive your Farrari at 100 mph and have only a small chance of being pulled over. You can drive at 95 mph on one stretch and have zero chance of being pulled over. From Wikipedia: "The hig
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by c517402 9y ago
The article says that helicopters can't fly over the mine. But, the end of the runway is close by and the flight path is almost tangent to the edge of the hole. https://www.google.com/maps/place/Mirny,+Sakha+
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by c517402 9y ago
People in Phoenix are referred to as Phoenicians. Which has always struck me as a misnomer.
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by c517402 9y ago
For an Advanced SST the quote near the end is, "Advances in aircraft technology suggest that sonic boom amplitudes for this type of aircraft, also referred to as a High Speed Civil Transport (HSCTJ or the "Orient Express". co
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by c517402 9y ago
The turbines engines used for natural gas based electrical power production can be throttled up and down over a wide range. IIRC from maximum power down to about 15%. But, no you do not want to just shut them off. There are natural gas base
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by c517402 9y ago
Thank you for the link to the stackexchange discussion. I read it and the Wikipedia and NASA pages it links to. Based on the Wikipedia link the calculated second table by the stackexchange author is incorrect. The Wikipedia article points o
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by c517402 9y ago
"Pilot Lt Col Ed Yielding and Reconnaissance Systems Officer Lt Col Joseph Vida took off at Palmdale, California and landed at Washington-Dulles a scant hour, four minutes, and 20 seconds later."[1] I don't remember any sonic

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