DaveE's latest activity
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DaveE replied to the thread Bismuth Crystals.Perhaps you misspoke? Isn't that everything? Also, I don't think the Carbon in Steel is a metal, but I'm bad at Chemistry and Carbon is... -
I would say that the most fundamental concept in mathematics is the natural numbers. And since the set of all natural numbers is...
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DaveE reacted to Nugatory's post in the thread Undergrad Is infinity a necessary concept? with
Like.
There isn’t any single “the concept” of infinity in math. There are multiple concepts, all of which have rigorous definitions that... -
DaveE replied to the thread Bismuth Crystals.I always thought that steel, bronze, and brass were metals. But that's the problem with vernacular language, it all depends on how you...
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DaveE replied to the thread Bismuth Crystals.Pure metals? "Like that", like what? There is Galena (PbS), Pyrite (FeS2), Stibnite (Sb2S3) Plus more exotic metals...
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DaveE replied to the thread Basic skills that kids are lacking.Motivation is the first step in teaching. Students will only rarely learn and remember things that they don't think are interesting or...
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DaveE reacted to renormalize's post in the thread Double slit experiment with single electrons and no observation with Like.
Can you describe an empirical observation or experiment which would distinguish between an electron that actually "exist(s) in our...
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DaveE reacted to jbriggs444's post in the thread Undergrad Meaning of division by non-whole real numbers with
Informative.
Are you comfortable with long division using pencil and paper? My generation was taught how to do this. There is no problem in... -
DaveE replied to the thread Basic skills that kids are lacking.Yes, I do think it is possible that kids today don't need to learn the Riemann - Roch theorem. I don't think your birthdate is the issue...
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DaveE reacted to Muu9's post in the thread Physics Considering transitioning to physics, any advice? with Like.
Try speaking with faculty at your institution working in computational physics/chem/bio or applying ML to physical/chemical/biological...
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DaveE replied to the thread What’s something that turned out to be much harder to do?.- Cloning mammals. Dolly the sheep was a bit of a surprise. - Gene editing (CRISPR etc.). Still early days, but I doubt Watson, Crick...
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DaveE replied to the thread Other Technical books that have been read cover to cover.All of the problems? No one does every exercise, do they? I'm pretty sure we did Goodman, Fourier Optics, cover to cover at school...
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DaveE reacted to pasmith's post in the thread Undergrad Best way to numerically solve this system of equations? with Like.
It may be easier to express the first two as $$ (1 - sN_i)(1 - c_i \lambda) + sN_i = 1 - c_i\lambda + sc_iN_i \lambda = 0.$$ Newton's...
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DaveE replied to the thread M 2.9 - 20 km ENE of Kenilworth, Illinois.OK, disclaimer... Native California guy here... So what? Today there were 8 M2.5 or bigger earthquakes in the US. M 2.5 is the smallest...
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Golgi was Italian I believe. Besides discovering the Golgi Complex, Golgi came up with the Golgi stain which fills a subset of neurons...