Measuring waves in a ripple tank
Lesson 11 / 13
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Lesson outcome
I can accurately measure the wavelength, frequency and wave speed of water waves in a ripple tank.
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Frequency of a wave can be measured indirectly from its speed and wavelength.
Wavelength of a wave can be measured by using a freeze frame of a wave moving along the length of a ruler.
It is more accurate to measure the length of, e.g. ten waves and dividing by ten, than measuring one wavelength.
Speed of a wave can be measured by recording the wave moving along a ruler with a timer in the frame.
Accurate distance and time are measured by freezing the film, played back in slow motion, to track one wave crest.
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