Physics: Interference and diffraction (2)

Physics: "In phase" vs. "out of phase". Constructive vs. destructive interference. Double-slit interference. Multiple slit interference / diffraction gratings. Single-slit diffraction; Huygens' principle. Thin films

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(1) "In phase", "out of phase". The relationship between path-length difference and phase
(2) Continued
(3) Continued. Constructive vs. destructive interference
(4) Double-slit interference
(5) Continued
(6) Continued
(7) Continued
(8) Continued
(9) Multiple slits / diffraction gratings
(10) Continued
(11) Single-slit diffraction; Huygens' principle
(12) Continued
(13) Thin films
(14) Continued


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Category:

Education

Tags:

• physics
• interference
• diffraction
• constructive
• destructive
• double
• slit
• multiple
• grating
• phase
• education
• college
• student
• university
• exam
• test
• educational
• study
• campus
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[jrjubach]

these videos, although very informative, are titled wrong, as they don't address interference or diffraction.

[crysisnov]

Thank you for clearing this up, I had some struggle with the path length differences. :)

[alkmaher]

@dudeohsogreat 1 full wavelength is equal to 2pi. In order for two waves to be out of phase, one must be ahead of the other by half a wavelength; therefore, this corresponds to 2pi/2 which is equal to pi (180 degrees) not pi/2 (90 degrees)

[flightsimulatorA340]

yeah understood thanks

[eastcoastflush]

@dudeohsogreat 180 degrres is ota phase..not 90

[eastcoastflush]

@TFTimotheus

look its easy one wave has 1 wavelegth or 2 or ..n more than the other one (suppused they both have the same wavlength)

[dudeohsogreat]

out of phase is not the same as not in phase..only wehen the phase difference is 90 are they said to be out of phase

[TFTimotheus]

So, when one has one more wavelength than the other. They're out of phase? Or are they still in phase?

4:04 confused me.