Please enable JavaScript.
Coggle requires JavaScript to display documents.
Interference (Interference and Coherent Sources (Review of Superposition…
Interference
Interference and Coherent Sources
Review of Superposition
Interpretation of Amplitude
Monochromatic Light
Constructive and Destructive Interference
Path Difference
The difference between distance it takes one source to point P and the distance it takes for the other source to reach the same point P
Similar, but not the same as Standing Waves
Similarities
Differences
Two Source Interference
Why a constant phase relationship(coherence) is not possible for light
Laser(monochromatic light) has many atoms with the same frequency so these issues occur less frequently
Creating Two Source Interference
Light typically behaves in an random order so we can't easily assume they're
coherent
But if we split incoming light the two or more sections resulting are in the same phase relative to each other
Whatever random changes occurring in the original source equally change the new sources
In
relative phase
Dual Split Experiment
One slit to make more ideal monochromatic light
Two slits to keep that relative frequency
Result on a sheet of paper is called
interference fringe
Interference pattern depends on the wavelength of the light
\(y_m\alpha \lambda\)
Assumptions made
Relationships
Slit size
\(I\alpha a\)
a=aperture size
If we increase the size of a slit this allows for more light to come in
More light means the intensity increases
Wavelength
Distance between slits
Distance from the mask to the screen
Introduction/Premise
Light has dual characteristics of wave and particle behavior
Sometimes its more convenient to interpret light as a ray but other times it is better to interpret light as a wave
Whenever we have interference of light it we must change our perspective to light as a wave
This is what we use to describe how colorless objects light a CD can give off color