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The Wavelength of light

PhysicsPhysics
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Tutor Pace Posted

The Wavelength of light

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Mukul Rathi

1. Magnetic field and electric in an electro magnetic wave are always perpendicular to direction of propagation of wave. By wavelegth , we means that electric field attains its amplitude ( its maximum value ) again while travelling half of wavelength.

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Aaron Naidoo

1) It means the the displacement from crest to crest (in phase points) in the electric or magnetic wave is 750nm, in the measured medium (a vacuum in this case).

2) Certain wavelengths can penetrate further than others (x rays vs visible light for example). In a vacuum the weve would go on indefinitely as no energy is lost in the moment (using the partical modal of light). The oscillations effect the frequency of the wave therefor effecting the wavelength (c = f*lamda, where lamda is the wavelength and c is the speed of light). the actual distance will depend on how energy is lost due to friction and induction with the surrounding medium. 

 

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