Appendix 2.4: Chart for Evaluating the Models of Light
MODEL: WAVE
Phenomena: Rectilinear Propagation
Supporting Arguments: every point on a wavefront can be considered as a point source of tiny secondary wavelets the spread out in front of the wave at the same speed.
Counter-Arguments: Newton said the the wave theory adequately explain Rec. Prop since waves emitted from a point source spread out in all direction.
Phenomena: Reflection
Supporting Arguments: Light reflects from a surface and the angle of incident is the same/equal to the angle of reflection.
Counter-Arguments: None
Phenomena: Refraction
Supporting Arguments: when wavefront move into shallow water they refract so that angle of refraction is less than the angle of incidence
Counter-Arguments: None
Phenomena: Dispersion
Supporting Arguments: Color of light have the same frequency but different wavelength.
Counter-Arguments: None
Phenomena: Diffraction
Supporting Arguments: When a large wavelength passes through a small opening you get a large diffraction and the opposite occur with a small wavelength and a large opening, wavelength of light very small.
Counter-Arguments: Newton said that if light was a wave should bend a lot more than the scientist Grimaldi observed.
Phenomena: partial reflection/ Refraction
Supporting arguments: waves partially effect/refract when there is a change in velocity partial reflection is noticeable when there is an increase in velocity partial reflection occurs when there is decrease in velocity.
Counter-arguments: None
Phenomena: Speed of Light
Supporting arguments: Wave theory shows that light slows down is a more dense medium (Foucault)
THE NATURE OF LIGHT: PART 2
THE WAVE AND PARTICLE MODELS OF LIGHT PROBLEM
ANSWER QUESTION: 1,3 TO 12
NEXT SCRIBE IS PRETTY MARY!
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