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Jonathan
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« Reply #30 on: 19:25:39, 27-09-2007 » |
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Well spotted, it's the Nearnst Equation for pH electrode potential calculations! It's about the only named equation I can remember from A level.
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Best regards,
Jonathan
*********************************************
"as the housefly of destiny collides with the windscreen of fate..."
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increpatio
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« Reply #31 on: 19:28:27, 27-09-2007 » |
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Well spotted, it's the Nearnst Equation for pH electrode potential calculations! It's about the only named equation I can remember from A level.
Irish Leaving cert chemstry is rather a lot below A-level chemistry in its standard; I think it's the only subject that is (that is: colleges that require A-level chemistry often don't accept L.Cert higher-level chemistry). Still fun though. |
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IgnorantRockFan
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« Reply #32 on: 11:44:31, 28-09-2007 » |
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My favourite equation is so cool that I made my own gif of it just so I could show people on forums:   |
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Allegro, ma non tanto
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richard barrett
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« Reply #33 on: 11:49:53, 28-09-2007 » |
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I remember at university that this equation was written on a toilet door with underneath it the words "therefore God exists." I spent some considerable time (well, as long as it took, on various occasions) pondering this idea before deciding it didn't follow at all.
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George Garnett
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« Reply #34 on: 11:51:12, 28-09-2007 » |
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That is very sweet  . (But shouldn't it be on a maths or a language thread rather than a science thread?  ) |
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« Last Edit: 11:53:23, 28-09-2007 by George Garnett »
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IgnorantRockFan
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« Reply #35 on: 11:55:32, 28-09-2007 » |
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(But shouldn't it be on a maths or a language thread rather than a science thread? ) Or possibly on the religion thread? |
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Allegro, ma non tanto
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increpatio
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« Reply #36 on: 16:44:25, 28-09-2007 » |
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I remember at university that this equation was written on a toilet door with underneath it the words "therefore God exists." I spent some considerable time (well, as long as it took, on various occasions) pondering this idea before deciding it didn't follow at all.
http://www.cs.uwaterloo.ca/~shallit/euler.htmlThat is very sweet . (But shouldn't it be on a maths or a language thread rather than a science thread? ) There *isn't* a maths thread though, I think. There's a maths and music thread, but no maths thread. And yes, it's a darling equation. I remember being very taken aback by the Lagrange Inversion Formula in my youth:  (g is the inverse of f). But not because it was an especially beautiful-looking equation. Oh wait! Here's one:   |
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Kittybriton
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« Reply #37 on: 02:31:33, 29-09-2007 » |
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I remember being very taken aback by the Lagrange Inversion Formula in my youth: Even at this distance I can't help looking at something like that and thinking about how to separate the various elements for correct typesetting (and then get the proof back three months later when I had no idea how I had done it, and everything was wonky). |
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Click me -> About meor me -> my handmade storeNo, I'm not a complete idiot. I'm only a halfwit. In fact I'm actually a catfish. |
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MT Wessel
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« Reply #38 on: 16:06:05, 29-09-2007 » |
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I remember at university that this equation was written on a toilet door with underneath it the words "therefore God exists." I spent some considerable time (well, as long as it took, on various occasions) pondering this idea before deciding it didn't follow at all.
Ah, Doubting Richard ? Er, try this for size then ... 0!=1 ..."therefore God exists". So you can stick it in your pipe and smoke it as far as I'm concerned ..  |
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« Last Edit: 01:22:16, 30-09-2007 by MT Wessel »
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lignum crucis arbour scientiae
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increpatio
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« Reply #39 on: 22:55:23, 29-09-2007 » |
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I remember being very taken aback by the Lagrange Inversion Formula in my youth: Even at this distance I can't help looking at something like that and thinking about how to separate the various elements for correct typesetting (and then get the proof back three months later when I had no idea how I had done it, and everything was wonky). Hahahah; thankfully mathematicians all do their own typsetting nowadays (or rather they get their computers to do it...courtesy of the Latex typesetting language). Not hard at all. |
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increpatio
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« Reply #40 on: 00:47:52, 28-11-2007 » |
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When we say a space has three dimensions, what are the dimensions of which there are three?
I would put it like this. To localise a point or event in space you need three coordinates (and of course a frame of reference). Do you thought? One coordinate can do just fine... But yeah, what you're saying is right. I realized that the word 'dimensional' is very important, that talk of 3 'dimensions' is a derivative of this. I'd probably say that there are no 3 dimensions in 'normal' space, but whatever maximal set of properly different directions you chose, there will be three of them; that is to say, though the 'dimensions' themselves could be anything, they have one common property, that their size is three. I find this quite beautiful, and I don't know why this all has ended up in the argument area! Actually, I'll move this reply somewhere else I think... But what exactly is this "space" anyway... ? Space is a word used to represent how things can be different, maybe? Not sure! |
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MT Wessel
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« Reply #41 on: 00:53:40, 07-12-2007 » |
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There's no such thing as space and time, only pints (hic) |
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lignum crucis arbour scientiae
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increpatio
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« Reply #42 on: 04:06:59, 07-12-2007 » |
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There's no such thing as space and time, only pints (hic) Are not pints units of volume; that is to say, measures of space? Some might think them quite arbitrary, but I do not; have not many philosophers and scientists been able to measure their scientific prowess in terms of their drinking capacity, and is not the one-pint vessel the absolutely ideal container for alcoholic fluids such as might render people conductive to philosophic, philanthropic, and scientific insights profound (or, indeed, a friendly chat with the barman)? |
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oliver sudden
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« Reply #43 on: 08:29:21, 07-12-2007 » |
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And which pint? This from wiki: United Kingdom, Commonwealth of Nations (Imperial)
1 pint = 20 fluid ounces = 568.26125 ml ≈ 568 ml
1 pint = 4 gills (this was the legal definition although in some areas a gill of milk or beer is referred to as a half-pint; elsewhere a gill was the ⅓ pint of milk given free to school children)
United States
1 pint (wet) = 16 fluid ounces = 2 cups = 473.176473 ml ≈ 473 ml
1 pint (dry) = 550.6104713575 ml ≈ 551 ml
1 pint (metric) = 500 ml (informally) Confusing the issue further, I remember the Australian metric pint in my youth being not the miserly US 500ml (still less the US non-metric wet pint, which is barely more than a schooner!) but the generous she'll-be-right-mate 600ml. 20% more. As you'd expect. |
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increpatio
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« Reply #44 on: 08:46:26, 07-12-2007 » |
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And which pint? This from wiki: United Kingdom, Commonwealth of Nations (Imperial)
1 pint = 20 fluid ounces = 568.26125 ml ≈ 568 ml
1 pint = 4 gills (this was the legal definition although in some areas a gill of milk or beer is referred to as a half-pint; elsewhere a gill was the ⅓ pint of milk given free to school children)
United States
1 pint (wet) = 16 fluid ounces = 2 cups = 473.176473 ml ≈ 473 ml
1 pint (dry) = 550.6104713575 ml ≈ 551 ml
1 pint (metric) = 500 ml (informally) Confusing the issue further, I remember the Australian metric pint in my youth being not the miserly US 500ml (still less the US non-metric wet pint, which is barely more than a schooner!) but the generous she'll-be-right-mate 600ml. 20% more. As you'd expect. It is easier to define the notion of 'pint' to be something absolute than to admit these local variations; thus one encounters a space-time metric with geographical and temporal dependencies as soon as one has mastered transatlantic travel and had a few colonial revolts. |
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