Lesson: Circular Aperture Diffraction and ResolutionPhysics
In this lesson, we will learn how to describe the effect of wavelength on the limit of resolution and how to describe the effects of diffraction from circular apertures.
Sample Question Videos
The headlights of a car are 1.3 m apart. What is the maximum distance at which an eye with a pupil diameter of 0.40 cm can resolve these two headlights? Assume that the wavelength of light from the headlights is 555 nm.
The primary mirror of the orbiting Hubble Space Telescope has an angular resolution of rad. What is the smallest detail that it can observe at a distance of km?
The Gemini North telescope at Mauna Kea, Hawaii, which has a diameter of 8.1 m, observes two objects on the Moon. What is the minimum distance on the lunar surface that the objects must be separated by for them to be resolvable? Assume that only the diffraction effects of the telescope aperture limit the resolution and that 550 nm wavelength light is used to observe the objects. Use m as the distance to the Moon.