Refraction (Edexcel GCSE Physics): Flashcards
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Practise the cards
14 cards from this deck
What is refraction?
What is refraction?
When waves change direction due to changing speed between media
What happens when waves slow down?
What happens when waves slow down?
Bend towards the normal
What happens when waves speed up?
What happens when waves speed up?
Bend away from the normal
Waves at right angles to surface
Waves at right angles to surface
Do not change direction
What is a wavefront?
What is a wavefront?
Imaginary line connecting same points in a set of waves
Angle of incidence
Angle of incidence
Angle between incident wave and normal
Angle of refraction
Angle of refraction
Angle between refracted wave and normal
Wave entering denser material
Wave entering denser material
Bends towards the normal
Wave entering less dense material
Wave entering less dense material
Bends away from the normal
Wavelength in denser material
Wavelength in denser material
Decreases
Which wavelengths slow down more?
Which wavelengths slow down more?
Shorter wavelengths
Blue vs red light in denser medium
Blue vs red light in denser medium
Blue slows down more than red
What is dispersion?
What is dispersion?
Different wavelengths refract differently, creating rainbow
EM wave interactions with substances
EM wave interactions with substances
Absorb, transmit, refract, or reflect (depends on wavelength)