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一个独立的联邦机构在1950年由美国国会创建的,以促进科学的进步。
该奥多内尔基金会致力于建筑模型方面,以提高教育质量。
力矩
更新日志力矩
-
1.12 (12-10-26)
- Fixed a bug that caused number text boxes to round off to incorrect precision, see #3303
-
1.11 (12-8-8)
- Fixed a problem that prevented audio from playing under Java 7
-
1.10 (11-5-21)
- added new translation credits features
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1.09 (10-1-14)
- Added control for angle units (i.e. degrees or radians) to tabs 3 and 4.
- Fixed a bug that caused errors after clearing the data, then playing back a recording
- Fixed a bug that prevented the rotation platform from being dragged after setting an angular velocity.
- Changed range of angular momentum chart from (-20,20) to (-10,10) to match angular velocity ranges.
- Increased range of angular momentum chart to make default motion visible within the chart bounds.
- Added units of kg m^2 / s for angular momentum
- Restored the angle slider on the Rotation introduction panel, was inadvertently dropped
- Changed the length scale of all objects from millimeters to meters, increasing the size of several objects (including the platform and ladybugs)
- Changed the label of chart series from "Series" to "Forces" and "Torques", respectively,
- Added a label and editable text box for applying torque in the moment of inertia tab
- Determine when the object slips off the platform as a function of the radius and velocity.
- rotation: Fixed the units on the acceleration and velocity charts to be in terms of mm instead of m.
- torque: Added a vertical slider for setting the torque in the moment-of-inertia tab.
- 1.08 (10-1-8)
-
1.07 (09-4-21)
- improvements for layout in torque modules
- Moved the platform to the right so it's not obscured by the control panel, see #1092
- improve behavior on screen size increase, share extra space equally between graphs and play area, see #1092
- converted checkboxes to multiline and removed extra padding to get clear button to fit on the screen at 1024x768, see #1092
- fix layout for torque simulation, remove unused PhetApplicationConfig subclasses, cleanup, see #1092
- improve layout for 1024x768 resoultion, see #1092
- 1.06 (08-12-19)
陈江涛(华南师范大学教育信息技术学院2009级硕士研究生 cjtmw@163.com)
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