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Wonders of Physics


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Waves – Confuse with V, f and lamda?

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Wavefront

Wavefront is an imaginary line which joins all identical points (e.g. crests) in phase.

Wavefront can be created in a ripple tank.

Circular
Horizontal

The video below shows how horizontal wavefront is created.

<p>Horizontal Wavefront from evantoh on Vimeo.</p>

Circular_1

The video below shows how other types of wavefront are created.

<p>Different Wavefront from evantoh on Vimeo.</p>

 


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Transverse Waves and Longitudinal Waves

Transverse waves are waves in which the direction of the wave is perpendicular to thedirection of the vibration.
e.g Light, water, and any waves in the electromagnetic spectrum

Longitudinal waves are waves in which the direction of the wave is parallel to the direction of the vibration.
e.g Sound

Wave equation: V = fλ 
From the rope videos, with only vertical displacement, speed of wave is constant.
Hence frequency is inversely proportional to wavelength. [f increases, λ decreases, and vice versa]

 


1 Comment

Transverse Waves and Longitudinal Waves

Transverse waves are waves in which the direction of the wave is perpendicular to thedirection of the vibration.
e.g Light, water, and any waves in the electromagnetic spectrum

Longitudinal waves are waves in which the direction of the wave is parallel to the direction of the vibration.
e.g Sound

Wave equation: V = fλ 
From the rope videos, with only vertical displacement, speed of wave is constant.
Hence frequency is inversely proportional to wavelength. [f increases, λ decreases, and vice versa]