Page 4 - form 5 physics chapter 1
P. 4

What is meant by a wavefront?    1. Plane wavefronts

Lines joining all the points of
the same phase are called
wavefronts.

                                 2. Circular wavefronts

The wavefronts of a transverse

wave and longitudinal wave are

perpendicular to the direction
of propagation of the waves.

Describing Waves         Amplitude (a)
                         The maximum displacement from its equilibrium
Vibration/Oscillation    position.
The movement from        Amplitude relates to loudness in sound and
one extreme position to  brightness in light. SI unit: meter, m
the other and back to
the same position.

                         Wavelength (λ)
                         The distance between two adjacent points of the
                         same phase on a wave.

                         The distance between   The distance between
                         two successive crests  two successive
                         or two successive      compressions or two
                         troughs                successive rarefactions
                                                in a sound wave.

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