[领域] 光学 (Optical Instruments) [来源] physics for scientists and engineers 2e (randall d. knight) 课本习题 [题目] 1.Two light bulbs are 1.20 m apart. From what distance can these light bulbs be marginally resolved by a small telescope with a 3.80 cm-diameter objective lens? Assume that the lens is diffraction limited and λ=600nm. 2.Your biology textbook tells you that a certain structure in the cell has a size of 0.75μm. You would like to see this structure using orange light with a wavelength of 600nm. What minimum numerical aperture must your microscope objective have? [瓶颈] 两题都看得懂 可是不知怎麽下手 @@ 麻烦大家了! (这节的标题叫 The Resolution of Optical Instruments 大概跟凹凸透镜有关) --

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