6.1 What is a wave?
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The wave model of radiation
21st Century Physics
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6.1 What is a wave?April 12, 2023
How many types of wave have you
heard of in everyday use?
Do they have anything in common?
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Aims
• Introduce waves as disturbances that transfer energy
• Introduce software used in the unit to revise the link between pitch and frequency
• Demonstrate transverse and longitudinal waves
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Introduction to waves
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What is a wave?
A wave is a disturbance
moving through a material
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What causes a wave?
• The source of a wave is always something that vibrates
• The material that the wave travels through is called the medium
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Low frequency, high period
High frequency, low period
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Transverse
T
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Transverse
• The particles of the medium vibrate at right angles (perpendicular) to the direction in which the wave moves
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LongitudinalaLong
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Longitudinal
• The particles vibrate (oscillate) back and forth creating a continuing wave of pulses
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Water waves
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Homework
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