Recent content by alchemist7

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    Undergrad How Do You Distinguish Between Interference and Diffraction in Wave Experiments?

    interference vs diffraction ?? given a question with two or more slits , how to determine if it is interference or diffraction?
    • alchemist7
    • Thread
    • Diffraction Interference
    • Replies: 1
    • Forum: Optics
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    Undergrad Understanding Phase Shift in Wave Light

    phase shift in wave light?? when doing reflecton/refraction/transmission of wave light exercise,we must take phase shift into account. but in what situation there is a π phase shift ? or other phase shift? i cannot apply this well! help~
    • alchemist7
    • Thread
    • Light Phase Phase shift Shift Wave
    • Replies: 2
    • Forum: Optics
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    Undergrad What factors affect the coherence of waves?

    I do understand the definition that their initial phase different is not constant. but i just cannot imagine what kind of wave has changing initial phase. isn't initial phase the phase at the time 0? how can it change?
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    When is the amplitude coefficient of reflection parallel to the incidence plane zero?

    At what angle of incidence is amplitude coefficient of reflection parallel to the incidence plane 0? my solution is that by Fresnell's equation, r//=tan(i-i`)/tan(i+i`)=0, i=i`,i=90.so for whatever surface,angle of incidence should be 90. is it correct? different from the answer!
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