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A wave entering a slower medium
[ Flash ]
Is this refraction? Angle of incidence?
No. The wave is changing speed but not bending.
a) Which wave characteristic changes? stays the same?
b) How many times faster is the blue medium than yellow
medium?
[ Flash ]
a) wavelength decreases in blue medium
b) frequency is the same
c) Blue medium is twice as fast
b. n and V
1 – incident medium
2 – refractive medium
Name all the ways these waves are different.
What characteric(s) do the waves have in common?
Show Me The Physics
[ Flash ]
Direction, Velocity, Wavelength are different
Frequency is the same
Waves, Refraction, Velocity, Wavelength
Slow to Fast Medium
When a light changes media,
its wavelength changes NOT its
frequency |
c.
n, λ
When light refracts it
BENDS, CHANGES SPEED and
WAVELENGTH
Which medium is faster?
Top medium, has larger wavelength
Refraction and Wavelength
Don Ion
Why No Refraction?
Angle of incidence = 0
Ex) What is the angle of incidence?, angle of refraction?
0 degrees, 0 degrees
What's wrong with this picture?
Lower left ray is not possible
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What is the angle of incidence and the angle of refraction?
June 2016
Enrichment
Using pins to trace the path of light
from air into glass and back into air
NOVA (PBS) explains
how refraction makes diamonds sparkle
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