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Lesson 1080 of 1524

Diffraction and Interference

Characteristics of diffraction patterns produced with diffraction gratings can be determined

Practice this chapter

Characteristics of diffraction patterns produced with diffraction gratings can be determined Diffraction gratings have been incorporated in many instruments, including microscopes and spectrometers

Slits produce a diffraction pattern if their width and separation are similar to the wavelength of light passing through them Interference bands of a single-slit diffraction pattern can be predicted

diffraction — bending of a wave around the edges of an opening or an obstacle. resolution — degree to which two images can be distinguished from one another, which is limited by diffraction. diffraction grating — many of evenly spaced slits having dimensions such that they produce an interference pattern. laser — acronym for a device that produces light amplification by stimulated emission of radiation.

Worked example

What does “diffraction” mean in Diffraction and Interference?

  1. 1Use the wording this chapter gives for diffraction.
  2. 2The book says: bending of a wave around the edges of an opening or an obstacle.
  3. 3Do not use the meaning of resolution. That term means degree to which two images can be distinguished from one another, which is limited by diffraction.

Result: bending of a wave around the edges of an opening or an obstacle

Why. That is the meaning this chapter gives for diffraction.

Do not swap diffraction and resolution. diffraction means bending of a wave around the edges of an opening or an obstacle. resolution means degree to which two images can be distinguished from one another, which is limited by diffraction.

Practice margin

This chapter

A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.