Lesson: Circular Aperture Diffraction and Resolution
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
Worksheet: 20 Questions • 1 Video
Find the minimum angular spreading of a 630 nm average wavelength flashlight beam that is originally 4.63 cm in diameter.
Find the minimum diameter mirror on a telescope that would allow you to see details as small as 500 m on the Moon. Use a value of 384 000 km for the distance to the Moon. Assume an average wavelength of 550 nm for the light received.
What is the minimum angular separation of two stars that are just resolvable by a 9.30 m diameter telescope, if atmospheric effects do not limit resolution? Use 570 nm for the wavelength of the light from the stars.