m********r
发帖数: 811 | 1 【 以下文字转载自 Physics 讨论区 】
发信人: miniplayer (mplayer), 信区: Physics
标 题: imaging system
发信站: BBS 未名空间站 (Thu Jul 2 12:29:51 2009, 美东)
Consider a 90 degree homogeneous bending magnet of bending radius 1 m that
is preceeded by a drift of length 1.2 m. It is followed by a drift of length
L such that the system is imaging in the horizontal plane. Determine L. |
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