[Sugar-devel] Physics Roadmap

[Brian Jordan]

On Wed, Jun 17, 2009 at 7:24 PM, Gary C Martin<gary at garycmartin.com> wrote:
> On 17 Jun 2009, at 06:29, Edward Cherlin wrote:
>
>> Did you look at my Turtle Art version of Alan Kay's third-grade gravity
>> lesson?
>>
>> http://wiki.sugarlabs.org/go/File:Gravity.odt
>
> I had a read, but it didn't get me very far, sorry – competing with an Alan
> Kay presentation is always going to be tough :-) Regarding Physics, it's
> more a sandbox for making weird and wonderful little mechanical devices; but
> specifically regarding gravity, I think there is a nice feature I'd like to
> try and find a way add as some point, 'object trails'.
+1

I tried this at one point using a black background in Physics and a
long camera exposure, it's a lot of fun seeing the physical motion in
one static image.

http://dev.laptop.org/~bjordan/physics/housegolf.jpg
http://dev.laptop.org/~bjordan/physics/trianglegolf.jpg

>  With this you could
> roll a ball off a cliff edge and see the motion curve left behind. Would be
> quite easy to add a grid overlay to allow measurement. I guess an optional
> gird would also allow building other more accurate experiments (i.e. I just
> made 3 pendulums of different lengths to see the shortest pendulum swing
> faster; and that using a larger mass weight did not affect frequency).
>
> --Gary
>
>> On Mon, Jun 8, 2009 at 11:39 AM, Brian Jordan<bcjordan at gmail.com> wrote:
>>>
>>> Attaching Sugar Devel (people who want to be involved with Physics
>>> development  might be on there).
>>>
>>>
>>> On Mon, Jun 8, 2009 at 5:28 AM, Asaf Paris Mandoki<asafpm at gmail.com>
>>> wrote:
>>>>
>>>> Hi,
>>>>
>>>> I've managed to get my development environment working and started
>>>> hacking
>>>> the Physics activity. I added a "pin" button and a "motor" button so
>>>> these
>>>> features aren't hidden anymore. I wanted to add a Play/Pause button but
>>>> it's
>>>> not as easy as I thought. It is much better to control time flow with
>>>> the
>>>> keyboard but I think it would be good to have a way to make the feature
>>>> explicit. I'm planing on committing my changes to the main branch as
>>>> soon as
>>>> I come up with a nicer icon for the motor button.
>>>>
>>>
>>> Commit it :)
>>>
>>> Would anyone like to help with making menu icons?
>>>
>>>> After I'm done with that I'm thinking on starting with the journal
>>>> integration. I will clone the main branch and work over there. I've seen
>>>> some suggestions for the scene file format at
>>>> http://wiki.laptop.org/go/Physics_File_Format . Is there a handy XML
>>>> library
>>>> I could use?
>>>>
>>>> I see the Physics component is now on dev.sugarlabs.org. I've added a
>>>> bug I
>>>> found, should I add the features I would like to implement in the
>>>> future? .
>>>> What is the best way for communicating regarding this project? Who are
>>>> the
>>>> people involved right now?
>>>>
>>>> Thanks,
>>>> Asaf
>>>>
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>>>
>>
>>
>>
>> --
>> Silent Thunder (默雷/धर्ममेघशब्दगर्ज/دھرممیگھشبدگر ج) is my name
>> And Children are my nation.
>> The Cosmos is my dwelling place, The Truth my destination.
>> http://earthtreasury.org/worknet (Edward Mokurai Cherlin)
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>
>