O'Reilly logo

Consumer Electronics by S. P. Bali

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

REFLECTION OF WAVES

When a wave meets a surface separating two materials in which its velocity is different, some of the energy of the wave is reflected. The reflected wave has the same velocity, frequency and wavelength as the incident wave and the two waves are symmetrical with the surface, Fig. 1.14.

In some cases of reflection, a change of phase occurs which is of importance when considering the details of sound and light waves. In external reflection, the phase of a wave changes by 180°. In the case of internal reflection, the incident and reflected waves are in phase. This is shown in Fig. 1.15.

 

images

 

Fig. 1.14 The reflected wave and the ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required