Invisible wrote:

>> http://www.falstad.com/circuit/
> 
> Ah yes, another interesting toy. If only I knew what it all means...

Heh. When I was a kid, I had one of those electronics kits where you 
wire things together with spring terminals. Great fun. This applet 
really makes me want to run out to the local Radio Shack and grab a few 
handfuls of components and a breadboard and start building stuff for the 
fun of it.

> Actually, that site has a whole heap of seriously interesting stuff. I 
> also enjoy playing with the digital filters and so forth.
> 

Electron orbitals was another fun one ... I believe there's a function 
in POV-Ray that generates an electron probability cloud.

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>>> http://www.falstad.com/circuit/
>>
>> Ah yes, another interesting toy. If only I knew what it all means...
> 
> Heh. When I was a kid, I had one of those electronics kits where you 
> wire things together with spring terminals. Great fun.

Yes, I also have 3 of those in my room somewhere. (Most of them now 
hopelessly broken.) That's how I first learned about logic gates, and 
how neat they are.

Somewhere I've got some of that microboard and a stack of 7400s... >:-D 
[I never did build that computer though...]

>> Actually, that site has a whole heap of seriously interesting stuff. I 
>> also enjoy playing with the digital filters and so forth.
> 
> Electron orbitals was another fun one ... I believe there's a function 
> in POV-Ray that generates an electron probability cloud.

Um... sure, if it's sin() or something. ;-)

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Invisible wrote:

>> Electron orbitals was another fun one ... I believe there's a function 
>> in POV-Ray that generates an electron probability cloud.
> 
> Um... sure, if it's sin() or something. ;-)
> 

This one:

 > f_quantum(x,y,z, P0). It resembles the shape of the electron density
 > cloud for one of the d orbitals.

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Mike Raiford wrote:
> Invisible wrote:
> 
>>> Electron orbitals was another fun one ... I believe there's a 
>>> function in POV-Ray that generates an electron probability cloud.
>>
>> Um... sure, if it's sin() or something. ;-)
>>
> 
> This one:
> 
>  > f_quantum(x,y,z, P0). It resembles the shape of the electron density
>  > cloud for one of the d orbitals.

Ah, right. So it's in functions.inc. I've never really looked in there. ;-)

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Am Wed, 09 Jan 2008 10:01:11 +0000 schrieb Invisible:

> As for "Science, 261, 189, 9 July 1993", what does that actually *mean*?
> 
(Assuming you don't already know this stuff, but maybe it is still useful 
for someone else) It is a short way of citing articles of scientific 
journals. In this case the journal is called "Science Magazine", the 
volume is 261 and the pagenumber, where the article starts, is 189.

http://www.sciencemag.org/cgi/content/abstract/261/5118/189

Usually you have to subscribe to such journals to download articles, and 
it is very expensive to subscribe to them, so usually it is only done by 
universities or research institutions. If there is a university near you, 
you can try to get articles at the library, as journal subscriptions are 
usually for the university network and (at least in germany) you can get 
a university library card also as a normal person for a very small fee 
(something like 10 € for a year). For finding articles

http://scholar.google.com

is not bad, although there are better search pages for which you have to 
pay a subscription fee.

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Florian Pesth wrote:
> Am Wed, 09 Jan 2008 10:01:11 +0000 schrieb Invisible:
> 
>> As for "Science, 261, 189, 9 July 1993", what does that actually *mean*?
>>
> (Assuming you don't already know this stuff, but maybe it is still useful 
> for someone else) It is a short way of citing articles of scientific 
> journals. In this case the journal is called "Science Magazine", the 
> volume is 261 and the pagenumber, where the article starts, is 189.
> 
> http://www.sciencemag.org/cgi/content/abstract/261/5118/189
> 
> Usually you have to subscribe to such journals to download articles, and 
> it is very expensive to subscribe to them, so usually it is only done by 
> universities or research institutions.

I see. So *this* is why you can never actually read all these papers 
they tell you exist? [I've never read a "paper" in my life, for example. 
And I'm not very clear on what one actually "is" either.]

> If there is a university near you, 
> you can try to get articles at the library, as journal subscriptions are 
> usually for the university network and (at least in germany) you can get 
> a university library card also as a normal person for a very small fee 
> (something like 10 € for a year). For finding articles
> 
> http://scholar.google.com
> 
> is not bad, although there are better search pages for which you have to 
> pay a subscription fee.

OK.

Well in this case, I probably wouldn't understand the paper in question 
anyway, but still...

-- 
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Florian Pesth wrote:
> http://scholar.google.com
> 
> is not bad, although there are better search pages for which you have to 
> pay a subscription fee.

Access to other search pages may also be included in a university 
library membership.

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Bill Pragnell wrote:

> Access to other search pages may also be included in a university 
> library membership.

Theoretically I have a lifetime membership to DeMontfort's library. That 
probably doesn't help very much though - unless I drive to Leicester. 
(Which, obviously, I'm not going to do.)

-- 
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> I see. So *this* is why you can never actually read all these papers they 
> tell you exist? [I've never read a "paper" in my life, for example. And 
> I'm not very clear on what one actually "is" either.]

Try adding "site:citeseer.ist.psu.edu" into any google search you do, then 
the results list should be papers that match your search.

If I google "site:citeseer.ist.psu.edu haskell" I get 6640 results, each of 
which is a paper you can read online for free (just click the link, then 
choose the format you want to read it in at the top right).

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scott wrote:
>> I see. So *this* is why you can never actually read all these papers 
>> they tell you exist? [I've never read a "paper" in my life, for 
>> example. And I'm not very clear on what one actually "is" either.]
> 
> Try adding "site:citeseer.ist.psu.edu" into any google search you do, 
> then the results list should be papers that match your search.
> 
> If I google "site:citeseer.ist.psu.edu haskell" I get 6640 results, each 
> of which is a paper you can read online for free (just click the link, 
> then choose the format you want to read it in at the top right).

For reasons that aren't entirely clear, almost all Haskell documentation 
is in the form of research papers - so if they weren't available online, 
there wouldn't be any documentation at all. So it tends to be online. 
Odd arrangement...

Let's see what I get for reaction diffusion...

http://citeseer.ist.psu.edu/85000.html

OK, that looks pretty promising. [Without actually reading it yet.]

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