17 nov 2005 · Waves and Optics 3 3 Superposition of Mechanical Waves One of the most important concepts we encounter in vibrations and waves is
The information about our physical surroundings is transmitted to us by waves such as sound and light waves Vibrations and waves are among the most important
Caveats: • Modifications of Fermat's Principle are necessary for moving media (e g , light traveling in moving fluid) • Frequency of light has to be fixed
Wave optics deals with the connection of waves and rays of light It is used when the wave characteristics of light are taken in account Wave Optics deals with
Wave Optics 10 2 HUYGENS PRINCIPLE We would first define a wavefront: when we drop a small stone on a calm pool of water, waves spread out from the point
(b) Sound waves bend into all parts of the room, a wave effect, More important, however, is the fact that interference patterns can be used to measure
the emphasis from light rays to light waves—from geometrical optics to physical important phenomena such as interference, diffraction, and polarization
characteristic properties such as: Reflection, refraction, interference, diffraction • Therefore light waves must have all these properties Now we will learn:
Hence the theory was discarded (2) Huygens' wave theory: says each point in a light source sends out waves in all directions through
importance for using, designing, or manufacturing optical systems In order to wave optics, and quantum optics—are then briefly discussed, after which, the
More important, however, is the fact that interference patterns can be used to measure wavelength Young did this for visible 962 CHAPTER 27 WAVE OPTICS
electromagnetic waves can travel through empty space (without a medium) travels through the following media: electrical wire, optical fiber, air, and space Beyond the strength of the signal, distance is important in communications
This will lead to a definition of the term, the “spectrum ” It will be nice if our measure also tells us when each frequency occurs This light wave has many
Electromagnetic Waves—64 important difference between light waves and the water wave along the optical axis from the center of the mirror to the focal
It is important to convey to students at least some of the exciting ideas of 20th century Chapter 25: Modern Optics and Matter Waves 25-3 Using Class Time
Wave optics is based on Maxwell's equations (see, for instance, [3 1]) When written in SI units Again, the harmonic spherical waves are of special importance:
last chapter will we concern ourselves specifically with wave optics, although in the and important fact about nature, which is that the laws of physics
be important when we discuss polarization) the wave equation for electromagnetic waves follows from Maxwell's 1 be ∆x, then by using the definition of
this chapter, the reader will find a table of important names and dates related to the history These ideas laid the foundations for the wave theory of light, which
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Light Waves and Polarization Wave Theory – Light travels as a transverse electromagnetic wave The GVD is important single mode optical fibers m/s