waves
TRANSCRIPT
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Types of Waves
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Types of Waves–Longitudinal Wave
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Types of Waves
–Transverse Wave
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Crest and Trough
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Amplitude
• Maximum distance the wave vibrates from its rest position.
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• Which one of these waves has a larger amplitude?
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Wavelength (λ)• The distance from any point on
one wave to that same point on the next wave.
λ
λ
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• Which one of these waves has a larger wavelength (λ)?
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Frequency (f)• The number of waves (or cycles)
produced in a given amount of time–One vibration per second = one hertz – 1Hz
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• Which one of these waves has a higher frequency?
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• f = 1/TFrequency and Period are reciprocals of each other.
v = f λThe velocity of a wave equals the wavelength times the
frequency.
λ = v TThe wavelength of a wave equals the velocity times the
period.
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Reflections
Loose End – In Phase Reflection
Fixed End – Out of Phase Reflection
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Reflected and Transmitted
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Refraction
• Refraction is the bending of waves when they enter a medium where their speed is different.
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Refraction
• Waves passing from one medium to another have the same frequency.
• The wavelength change depends on velocity change so that
– f = v/λ is constant.