{"action":"created","issue":{"url":"https://api.github.com/repos/phetsims/pendulum-lab/issues/82","labels_url":"https://api.github.com/repos/phetsims/pendulum-lab/issues/82/labels{/name}","comments_url":"https://api.github.com/repos/phetsims/pendulum-lab/issues/82/comments","events_url":"https://api.github.com/repos/phetsims/pendulum-lab/issues/82/events","html_url":"https://github.com/phetsims/pendulum-lab/issues/82","id":85237033,"number":82,"title":"Energy Conservation Violated","user":{"login":"phet-steele","id":5863899,"avatar_url":"https://avatars.githubusercontent.com/u/5863899?v=3","gravatar_id":"","url":"https://api.github.com/users/phet-steele","html_url":"https://github.com/phet-steele","followers_url":"https://api.github.com/users/phet-steele/followers","following_url":"https://api.github.com/users/phet-steele/following{/other_user}","gists_url":"https://api.github.com/users/phet-steele/gists{/gist_id}","starred_url":"https://api.github.com/users/phet-steele/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/phet-steele/subscriptions","organizations_url":"https://api.github.com/users/phet-steele/orgs","repos_url":"https://api.github.com/users/phet-steele/repos","events_url":"https://api.github.com/users/phet-steele/events{/privacy}","received_events_url":"https://api.github.com/users/phet-steele/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/phetsims/pendulum-lab/labels/PhET%20will%20address","name":"PhET will address","color":"fef2c0"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":4,"created_at":"2015-06-04T19:15:30Z","updated_at":"2015-06-22T19:46:50Z","closed_at":null,"body":"At the smallest length, the total energy bar does not stay constant but instead fluctuates up and down.\r\n1. Go to the Energy screen.\r\n2. Slide the length down to 0.1m.\r\n3. Set the pendulum swinging (90 degrees works well).\r\n4. Enable the energy graph and zoom in until the total energy bar is shown at a reasonable scale.\r\n\r\nRuler is there for reference:\r\n\r\n![pendla2](https://cloud.githubusercontent.com/assets/5863899/7992180/cd910b26-0aba-11e5-944b-9184f1cd5702.gif)\r\n\r\nThis is in no way consistent for me. Sometimes thermal energy is made somehow (friction is never turned on) and the thermal energy fluctuates instead, and other times nothing wrong appears to be happening. Tested on Win 8.1 FF and Chrome.\r\n\r\nTroubleshooting information:\r\nName: Pendulum Lab\r\nURL: http://www.colorado.edu/physics/phet/dev/html/pendulum-lab/1.0.0-dev.4/pendulum-lab_en.html\r\nVersion: 1.0.0-dev.4 2015-06-04 17:46:07 UTC\r\nFeatures missing: touch\r\nUser Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0\r\nLanguage: en-US\r\nWindow: 1366x633\r\nPixel Ratio: 1/1\r\nWebGL: WebGL 1.0\r\nGLSL: WebGL GLSL ES 1.0\r\nVendor: Mozilla (Mozilla)\r\nVertex: attribs: 16 varying: 28 uniform: 1024\r\nTexture: size: 16384 imageUnits: 16 (vertex: 16, combined: 32)\r\nMax viewport: 32767x32767\r\nOES_texture_float: true\r\nDependencies JSON: {\"comment\":\"# pendulum-lab 1.0.0-dev.4 Thu Jun 04 2015 11:46:00 GMT-0600 (MDT)\",\"assert\":{\"sha\":\"903564a25a0f26acdbd334d3e104039864b405ef\",\"branch\":\"master\"},\"axon\":{\"sha\":\"7de4a27be4b322b71c5f5046df193a03ccf0f161\",\"branch\":\"master\"},\"babel\":{\"sha\":\"8725cd18114c1307057c465a0762a3cf8f1cb1b9\",\"branch\":\"master\"},\"brand\":{\"sha\":\"b3362651f1d7eddb7f8697d02400472f97f9d140\",\"branch\":\"master\"},\"chipper\":{\"sha\":\"c7d6ea5f9bef6e3882309af56ad409908dd28878\",\"branch\":\"master\"},\"dot\":{\"sha\":\"a6a50c92c4cda5f8a3371d8c357ea565b7e7bd6c\",\"branch\":\"master\"},\"joist\":{\"sha\":\"55fd6884039c5ef2f2145093c8530beab5490233\",\"branch\":\"master\"},\"kite\":{\"sha\":\"b915f3b160744e4833d177dc38e74e4cbc912883\",\"branch\":\"master\"},\"pendulum-lab\":{\"sha\":\"2b4cf70e4a8a88b37882b1643d44155a806508ab\",\"branch\":\"master\"},\"phet-core\":{\"sha\":\"23834d107dc1cb368c00901c76927b712b9caa10\",\"branch\":\"master\"},\"phetcommon\":{\"sha\":\"bb92c52cd90fdaa0c2a746fea82594afd439b4db\",\"branch\":\"master\"},\"scenery\":{\"sha\":\"f09eddb7393946fcbedb63ebf6b88d1785c91bfc\",\"branch\":\"master\"},\"scenery-phet\":{\"sha\":\"7ffc5a1a36e0afe36d035d0367078b3558fd157f\",\"branch\":\"master\"},\"sherpa\":{\"sha\":\"ae2168a85ceb4094c23cd47ba5fe8145375448eb\",\"branch\":\"master\"},\"sun\":{\"sha\":\"c9087fbb0cdd83f79452330fec3b83f809e2c0d8\",\"branch\":\"master\"}}"},"comment":{"url":"https://api.github.com/repos/phetsims/pendulum-lab/issues/comments/114235629","html_url":"https://github.com/phetsims/pendulum-lab/issues/82#issuecomment-114235629","issue_url":"https://api.github.com/repos/phetsims/pendulum-lab/issues/82","id":114235629,"user":{"login":"ariel-phet","id":4051174,"avatar_url":"https://avatars.githubusercontent.com/u/4051174?v=3","gravatar_id":"","url":"https://api.github.com/users/ariel-phet","html_url":"https://github.com/ariel-phet","followers_url":"https://api.github.com/users/ariel-phet/followers","following_url":"https://api.github.com/users/ariel-phet/following{/other_user}","gists_url":"https://api.github.com/users/ariel-phet/gists{/gist_id}","starred_url":"https://api.github.com/users/ariel-phet/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ariel-phet/subscriptions","organizations_url":"https://api.github.com/users/ariel-phet/orgs","repos_url":"https://api.github.com/users/ariel-phet/repos","events_url":"https://api.github.com/users/ariel-phet/events{/privacy}","received_events_url":"https://api.github.com/users/ariel-phet/received_events","type":"User","site_admin":false},"created_at":"2015-06-22T19:46:50Z","updated_at":"2015-06-22T19:46:50Z","body":"Hopefully will be fixed with a new minimum length"}}