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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。
碰撞实验室
更新日志碰撞实验室
-
2.01 (12-10-12)
- Changed "Sticky" and "Bouncy" to "Inelastic" and "Elastic"
-
2.00 (12-6-14)
- Many changes, including adding a introductory tab. See below for more information.
- Disabled "back" button control also when going backwards would go less than time == 0.
- Disabled "back" control when elasticity has gone under 100%, due to buggy behavior
- Increased size of zoom in/out buttons
- Slider thumb colors changed to blue for increased visibility
- Fixed momenta diagram arrows so that zooming will keep the arrows fixed to the grid
- Renamed "Rewind" button to "Restart"
- Center of mass is always in front of balls and arrows
- Change precision of data table to 2 places in Intro tab, 3 in Advanced tab
- Font size reduction in the data table
- Reduced header height
- Made the ball column in the data table thinner
- Data table heavily changed
- Moved About / Preferences buttons
- Moved PhET logo to the upper-right
- Updated control-panel background color to match normal-modes
- Hide arrow head indicators when not paused
- Capitalizing headers in the data table
- Adding units row into data table
- Added extra row on Intro tab for annotations
- Removed Y-related columns in Intro tab
- Added "V" to velocity arrow tip
- Velocity arrow target position now centered on the tip
- Velocity arrow color / layering / size changes
- Advanced tab: slightly reduced vertical size to fit larger play button
- Increased size of the Kinetic Energy readout
- Added checkbox to toggle "Kinetic Energy" visibility
- Changed 0% and 100% marks on the elasticity slider to "Sticky" and "Bouncy".
- Increased size of the play button
- Changed "Time Rate" to "Sim Speed"
- Added "Return Balls" button
- Added Introduction tab
- 0.01 (10-10-21)
- 1.00 (10-10-21)
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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