15:[[11985143,{"by":"Fr0styMatt88","descendants":24,"id":11985143,"kids":[11985376,11986041,11985352,11987479,11985628,11985249,11985399,11986195,11990517,11990509,11990504,11990500,11990494,11985383,11985295,11986716,11993321,11987988,11986181,11986780,11985326,11985656,11985770,11985192,11985595],"score":86,"text":"I've been on a big math and physics kick lately and have started reading Feynman's "Six Easy Pieces".

It's got me thinking - what software is out there that is kind of like a particle / quantum physics sandbox? Any environments where you can start playing with things, such as particles and forces, with lots of graphics / interactivity?

To put it another way - what are some of the best 'software physics toys' that people have come across?

I've seen 'The Powder Toy' (http://powdertoy.co.uk/) and 'Algodoo' (http://www.algodoo.com/). Algodoo seems to deal mainly with mechanics and The Powder Toy is extremely fun though not really meant to be realistic as such.

Anything like 'The Powder Toy' but more in-depth?","time":1467021762,"title":"Ask HN: Good software for interactive exploration of quantum/particle physics?","type":"story"}],[5776590,{"by":"matwiemann","descendants":15,"id":5776590,"kids":[5776667,5776836,5776778,5776755,5776791,5776758,5776699],"score":26,"text":"","time":1369688857,"title":"500 requests/s with Ruby on Rails 4 on a 5$ / month server","type":"story","url":"http://blog.wiemann.name/500-requestss-with-ruby-on-rails-4-on-a-5-month-server"}],[5700819,{"by":"EvanMiller","descendants":24,"id":5700819,"kids":[5701156,5701011,5702668,5702571,5703073,5701686,5701046,5704403,5701744,5700929,5701535,5701203],"score":160,"text":"","time":1368472922,"title":"Announcing Evan's Awesome A/B Tools","type":"story","url":"http://www.evanmiller.org/announcing-evans-awesome-ab-tools.html"}],[5030511,{"by":"usaar333","descendants":47,"id":5030511,"kids":[5030704,5030643,5030674,5030894,5030706,5030711,5030849],"score":153,"time":1357713503,"title":"When EC2 Hardware Changes Underneath You","type":"story","url":"http://blog.picloud.com/2013/01/08/when-ec2-hardware-changes-underneath-you/"}],[2321838,{"by":"jasoncwarner","descendants":170,"id":2321838,"kids":[2321974,2321981,2321920,2322046,2322212,2322186,2322064,2322028,2322926,2321940,2321950,2322103,2322137,2322166,2322124,2321897,2321989,2322052,2321927,2321964,2322205,2322055,2322095,2322463,2322143,2322816,2322586,2322235,2321976,2322572,2322393,2322579,2322239,2321978,2322509,2323789,2322329,2344808,2322350,2322371,2322617,2323287,2322285,2322058,2322506,2321923,2326348,2322068,2322415,2322683,2323880,2322067,2322297,2328652,2322543,2322764,2322532,2322131,2321966,2322277,2322056,2322317,2322085,2321957,2321988,2323056,2323390,2322268,2322279,2322246,2322214,2322305,2322200,2322271,2324406,2322950,2322010,2321985,2322792,2323217,2322156,2321990,2328146,2322006],"score":118,"text":"I am the Ubuntu desktop manager at Canonical. The Ubuntu community is getting ready to start planning for the next UDS in May.

I know there are quite a few Ubuntu users here and I wanted to reach out and see what people would like to have fixed, changed, improved, removed, added or anything else in the upcoming release. I'm also quite interested in those who DON'T use Ubuntu and what their thoughts are on why they don't use it (might be related).

Things to consider:

* Applications and default app selection

* Configuration & Settings

* Usability and ease of use

* Accessibility

It would be helpful for me if you could give a brief rundown of what you use Ubuntu for as well.

Cheers,

-Jason

PS. If you have used Unity in the 11.04 beta, now would be a good time to give feedback on that as it could shape the 11.10 release as well.","time":1300094375,"title":"Ask HN: What would you like to see in Ubuntu 11.10, Oneiric Ocelot?","type":"story","url":""}]]

user:	viktorsr
created:	July 29, 2010
karma:	6
about:	Developer in Barcelona. Interested in node.js, Ruby, Solr, Hadoop, HBase, and new and old technologies in general.

1.	Examples in Number Theory by Terence Tao [2005][PostScript](math.ucla.edu) 2 points by viktorsr 14 years ago \| 3 comments
2.	Understanding Amazon EC2 failures and redundancy(rotanovs.com) 2 points by viktorsr 14 years ago \| 0 comments