Funny how we used to do that. New Scientist was my bent, and I had several years of bound copies at one time in my office at Uni. They came home later into storage when I left the Uni. About half got irrepairably damaged during a sewerage fault, and the remainder I gifted to my son, who in the words of the American tourist from "84 Charing Cross Rd", likes "yards of bound leather" to decorate his apartment.
Cheers On Mon, Jul 14, 2025 at 06:19:04PM -0600, Steve Smith wrote: > > I'm not clear on your (EricS's) age (childhood) but I have a full bound > collection of SciAm which might date back that far I'd love to find someone to > take over from me... I already tried unloading them on Zingale but he ducked > that bullet. > > Any takers? Old paper and dust? > > > > Eric writes > > When I was a kid, there was some article (maybe Sci. Am.?) that I found > wonderful. > > Bilateral Symmetry may apply to in magazines too :-) Here's a 1973 article > in "American Scientist" instead of "Scientific American" :-) > > https://www.americanscientist.org/article/how-the-owl-tracks-its-prey > from the article: > Asymmetrical placement of the ears (one higher than the other) allows the > owl to determine both the azimuth (horizontal direction) and elevation > (vertical direction) of sounds. > > > On Mon, Jul 14, 2025 at 2:33 PM Santafe <[email protected]> wrote: > > > On Jul 15, 2025, at 2:41, glen <[email protected]> wrote: > > > > Now, I'm sensitive to the argument that all this falls under > parallax, even radially symmetric body types and the 9 octopus > ganglia. > And bi- vision, hearing, etc. is a simple form of parallax: > triangulation. > > When I was a kid, there was some article (maybe Sci. Am.?) that I > found > wonderful. > > It had to do with owl ear asymmetries, which are produced by tufts of > stiff feathers at unequal positions in front of whatever feather-hood > (or something) channels sound to the ear canals. > > Upshot of the articles was that owls need resolution in the vertical > as > well as the horizontal, from phase, intensity, and packet-arrival-time > differences (including what acousticians term the “head-shaped > transfer > function”, as I learned some decades later working among the > acousticians for a few years). > > Article claimed (I have no way to check without a dive to see what has > been done since) that owls and people have about the same acuity in > lateral position of a sound’s origin, if the sound has enough shape > (so, not a clarinet) to cue from. But people have terrible vertical > acuity. For owls, the vertical acuity is ballpark-comparable to the > lateral. > > > .- .-.. .-.. / ..-. --- --- - . .-. ... / .- .-. . / .-- .-. --- -. --. / > ... --- -- . / .- .-. . / ..- ... . ..-. ..- .-.. > FRIAM Applied Complexity Group listserv > Fridays 9a-12p Friday St. Johns Cafe / Thursdays 9a-12p Zoom > https://bit.ly/virtualfriam > to (un)subscribe http://redfish.com/mailman/listinfo/friam_redfish.com > FRIAM-COMIC http://friam-comic.blogspot.com/ > archives: 5/2017 thru present > https://redfish.com/pipermail/friam_redfish.com/ > 1/2003 thru 6/2021 http://friam.383.s1.nabble.com/ > > .- .-.. .-.. / ..-. --- --- - . .-. ... / .- .-. . / .-- .-. --- -. --. / ... > --- -- . / .- .-. . / ..- ... . ..-. ..- .-.. > FRIAM Applied Complexity Group listserv > Fridays 9a-12p Friday St. Johns Cafe / Thursdays 9a-12p Zoom > https://bit.ly/virtualfriam > to (un)subscribe http://redfish.com/mailman/listinfo/friam_redfish.com > FRIAM-COMIC http://friam-comic.blogspot.com/ > archives: 5/2017 thru present > https://redfish.com/pipermail/friam_redfish.com/ > 1/2003 thru 6/2021 http://friam.383.s1.nabble.com/ -- ---------------------------------------------------------------------------- Dr Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders [email protected] http://www.hpcoders.com.au ---------------------------------------------------------------------------- .- .-.. .-.. / ..-. --- --- - . .-. ... / .- .-. . / .-- .-. --- -. --. / ... --- -- . / .- .-. . / ..- ... . ..-. ..- .-.. FRIAM Applied Complexity Group listserv Fridays 9a-12p Friday St. Johns Cafe / Thursdays 9a-12p Zoom https://bit.ly/virtualfriam to (un)subscribe http://redfish.com/mailman/listinfo/friam_redfish.com FRIAM-COMIC http://friam-comic.blogspot.com/ archives: 5/2017 thru present https://redfish.com/pipermail/friam_redfish.com/ 1/2003 thru 6/2021 http://friam.383.s1.nabble.com/
