[squeakland] Kedama Questions

[Randy Caton]

I agree with the second scientist and Yoshiki on the last point. We have a lot of convincing evidence that something we call an atom and something called a molecule, etc. exist. For example X-ray diffraction, chemical reactions, the periodic table, atomic energy levels, molecular rotational levels, electron diffraction, etc. We have models for them that explain a lot. We don't know what their underlying reality is (whatever that means).  

Randy

Randall Caton
41596 Bald Eagle Drive
Bigfork, MN 56628
218-832-3490
Sent from my iPhone

On Nov 6, 2010, at 1:44 AM, Yoshiki Ohshima <yoshiki at vpri.org> wrote:

> At Sat, 6 Nov 2010 00:40:06 -0400,
> Steve Thomas wrote:
>> 
>> Yoshiki,
>> 
>> I was helping my son with Chemistry and the question on his test was "Which has more molecules, a liter of frozen
>> vegetable oil or a liter of liquid vegetable oil.  So I reminded him the experiment we did with the balloon and how it
>> contracted when we put it in ice water and expanded when we warmed it up.
>> 
>> Then I thought your Particles Dye in Water project and tried resizing the Kedama World (which didn't work) I was able to
>> change the worlds scale. I eventually created two separate Kedama worlds in another project each with 500 turtles and
>> scaled them to convey the idea.
> 
>  Ah, I'd love to see it.
> 
>> I wanted to make a copy of the Kedama World (two avoid creating the same scripts twice), to show the "Dye in Water"
>> model with different tick rates at the same time to facilitate comparison (which is easier when you can see both at the
>> same time). This idea came from my youngest son who suggested we try the Dye in Water with Ice Water and Hot Water.
> 
>  Right now, no.  Many internal structure needed to be taken care of
> and I couldn't go far enough to allow copying, and migrating particles
> from one world to another, etc.
> 
>> So, couple of things:
>> 
>> 1. Can you change the size of a Kedama world (w/o changing the size of the turtles?)
> 
> For now, do the following:
> 
> - Create a text object and type in:
> 
>   KedamaMorph new openInWorld
> 
> - Just select the "KedamaMorph" part, and press Ctrl-b or Alt-b or
>    Cmd-b you'll see a green window.
> - Press a little button labeled "class" around the center.
> - from the top-right pane, choose the element labeled
>    "defaultDimensions" (may be clipped by the scroll bar).
> - You should see a point expression that looks like:
> 
>    ^ 100 @ 100
> 
>   Replace it with your favorite numbers like "300 at 300", and press
>   Ctrl-s or Alt-s or Cmd-s.  The red border around the bottom pane go
>   away and you can close the browser window.
> 
> - Now, go back to the text object, and select all text ("KedamaMorph
>   new openInWorld") and press Ctrl-d, Alt-d, or Cmd-d.
> 
>> 2. Just curious why does each edge have its own mode (bouncing, wrap, stick) as opposed to one for all?
> 
>  For example, the gas tank example utilize it.  the top edge is set
> to wrap but others are set to bounce.
> 
>> 3. How can I model the color changes for a Particles in Dye project. I was thinking of something along the lines of
>>    having the colors "mix" when the dye and water were in the same spot (or in the other's patch) but wasn't sure how
>>    to do that. I assume it has to do with setting the red/green/blue component from/into patch, but couldn't quite
>>    figure it out.
> 
>  ...  I have an answer but running out time.  Next time I can do it,
> I'll try to write an example.  But unfortunately, the code not going to
> be pretty.  (The effect it makes will be pretty, however^^;)
> 
>> 4. How can I add an extra turtle to a world? (ex: dye and water)?
> 
>  From the menu in the viewr for the KedamaWorld.  The button between
>  orange 'v' and blue '+', and choose 'add a new breed of turtle'.
> 
>> Lastly I really love your question: "Is there really such a thing as a molecule? How can we avoid asking you just to
>> believe it?" I have been posing this question to a bunch of folks including some professors at Princeton. Two of the
>> three said something like "that's a really good question, I don't know I've just always believed it" One just got this
>> big smile and said, "its a model and we use experiments to see how
>> well the model works."
> 
>  Well, the last one is close to my thinking.  We are not going to
> know the "final truth", but science is a methodology to try to
> approach it.
> 
> -- Yoshiki
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