In form 4 u’ve learned refraction of light. Light is part of electromagnetic wave. Thus other types of waves also undergo refraction.
Lets recall light refraction..watch this video!
Refraction is a phenomenon where there is a change of direction of the traveling waves from 1 medium to another due to change of speed.
Refraction of Water Wave:
When water waves move from deep to shallow region, their wavelength become shorter and the velocity decreases.
The frequency of the wave remain unchanged.
wave bended as it moves from different depth
Wavelength λ decreased as it moves frm deeper to shallow region.
1 comment:
INCORRECT: "Refraction is a phenomenon where there is a change of direction of the traveling waves from 1 medium to another due to change of speed."
Why? Because when angle of incidence is zero (parallel to normal), direction of refracted waves same as that of incident waves although the WAVELENGTH & the SPEED CHANGE!
What about this?
"Refraction is a phenomenon in which the waves undergo changes in speed and wavelength without change of frequency when they travel from one medium to another medium - from denser (shallow water) to less dense medium (deeper water), speed and wavelength increases and the waves bend away from normal if angle of incidence > 0`; and from less dense to denser medium, speed and wavelength decrease and the waves bend towards normal if angle of incidence > 0`.
Compare notes in the noble values of science.
Humbly yours,
Tan
PJ Physics Tutor
Email: tutortan1@gmail.com
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