Lesson 596 of 1524
Wave Optics
An accurate technique for determining how and where waves propagate is given by Huygens’s principle: Every point on a wavefront is a source of wavelets that spread out in the forward direction at the same speed as the…
Practice this chapterAn accurate technique for determining how and where waves propagate is given by Huygens’s principle: Every point on a wavefront is a source of wavelets that spread out in the forward direction at the same speed as the… The new wavefront is a line tangent to all of the wavelets
Wave characteristics are those associated with interference and diffraction Like all EM waves, the following relationship is valid in vacuum: c = f λ , where c = 3 × 10 8 m/s is the speed of light, f is the frequency of the electromagnetic wave, and λ is its wavelength in vacuum
Huygens’s principle — every point on a wavefront is a source of wavelets that spread out in the forward direction at the same speed as the wave itself. The new wavefront is a line tangent to all of…. following relationship — valid in vacuum: c = f λ , where c = 3 × 10 8 m/s is the speed of light, f is the frequency of the electromagnetic wave, and λ is its wavelength in vacuum. wavefront — a source of wavelets that spread out in the forward direction at the same speed as the…. diffraction — the bending of a wave around the edges of an opening or an obstacle.
Worked example
What does “Huygens’s principle” mean in Wave Optics?
- 1Use the wording this chapter gives for Huygens’s principle.
- 2The book says: every point on a wavefront is a source of wavelets that spread out in the forward direction at the same speed as the wave itself. The new wavefront is a line tangent to all of….
- 3Do not use the meaning of following relationship. That term means valid in vacuum: c = f λ , where c = 3 × 10 8 m/s is the speed of light, f is the frequency of the electromagnetic wave, and λ is its wavelength in vacuum.
Result: every point on a wavefront is a source of wavelets that spread out in the forward direction at the same speed as the wave itself. The new wavefront is a line tangent to all of…
Why. That is the meaning this chapter gives for Huygens’s principle.
Do not swap Huygens’s principle and following relationship. Huygens’s principle means every point on a wavefront is a source of wavelets that spread out in the forward direction at the same speed as the wave itself. The new wavefront is a line tangent to all of…. following relationship means valid in vacuum: c = f λ , where c = 3 × 10 8 m/s is the speed of light, f is the frequency of the electromagnetic wave, and λ is its wavelength in vacuum.
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.