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Path: ...!eternal-september.org!feeder2.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Peter Fairbrother <peter@tsto.co.uk> Newsgroups: rec.crafts.metalworking Subject: Re: 1991 ranger brake problem - CO2 & O3 Date: Mon, 18 Nov 2024 02:09:47 +0000 Organization: A noiseless patient Spider Lines: 36 Message-ID: <vhe7ld$u72b$1@dont-email.me> References: <vgu410$17hmn$1@dont-email.me> <d5j5jjh9l75v95jofkrde2b2r8o7lr2bfr@4ax.com> <vgujf2$1dvhj$1@dont-email.me> <vh0fpo$1p7o4$1@dont-email.me> <sl98jjdjikf1fdlvn38ablen8hu4aui4mg@4ax.com> <vh2s43$2b5ip$1@dont-email.me> <vh2vln$2c38a$1@dont-email.me> <vh3281$2ch8h$1@dont-email.me> <0f5ajjpv7pg7qm21kfjc6unsl8f48s3kc9@4ax.com> <vh3774$2dg8a$1@dont-email.me> <vh382r$2dngf$1@dont-email.me> <vh38u5$2dg8a$2@dont-email.me> <vh3egn$2evqb$1@dont-email.me> <vh5j5j$2v6fp$1@dont-email.me> <vcadjjta7qb14jlee2r76lk1394hrvncji@4ax.com> <vh7hsq$3e5bj$1@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Mon, 18 Nov 2024 03:09:49 +0100 (CET) Injection-Info: dont-email.me; posting-host="53358bc88ae8e7f640ed81281457dcf6"; logging-data="990283"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18TpEukHotHwav9LoACwz5OHU8DDtvqr0Y=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:b4grleezPOJ0cuWF/wYGI6VrJF8= In-Reply-To: <vh7hsq$3e5bj$1@dont-email.me> Content-Language: en-GB Bytes: 3243 On 15/11/2024 13:20, Jim Wilkins wrote: > Chemistry is > too complex for simple explanations. My 4 year degree in it qualified me > only to understand further education which the Vietnam draft prevented, > though the knowledge of matter, energy and quantum mechanics gave me a > boost into other fields like semiconductor physics. I dunno. I only did a three year (Hons) degree ;) Can do some quantum stuff, and pde's, sometimes, but failed conic sections till years later. Perhaps because they have little to do with chemistry. i digress. If you keep it to atoms made of nuclei and electrons, without going into the quantum physics but with a little electron cloud handwavium, it can be fairly understandable. But often l o o o o n n g, especially if you include reaction mechanisms. One of my favourites is when in a house to describe the rooms as electron clouds of atoms, each with one nucleus - just barely visible to scale - in each room. But even if you do get it all in there, and get it understandable (and correct, of course), does it help the average citizen or even tekki-sheddi? Possibly not. So it squirms back into the murk of knowledge which is never going to be used. Or gets relegated to Google storage - keep the outline, search for details if/when needed. Especially in chemistry where there are over a billion entries in the Beilstein/Gmelin/Reaxys database... In places like this I try to curate for a curious intelligent person, with a smattering of science, to feel that I answered a question or they learned something, hopefully light enough to float in the murk... or an outline worth remembering. Peter Fairbrother