Diffraction Grating Problems - Physics

This physics video tutorial explains how to solve diffracting grating problems. It explains how to calculate the second order angle given the wavelength of light used in nm and the number of lines per centimeter of the diffraction grating. It explains how to calculate the wavelength of light given the angle of the third order bright fringe. Finally, it explains how to calculate the number of lines per centimeter of a diffracting grating given the wavelength of light and the angle of the second order bright fringe. This video contains plenty of examples and practice problems on diffraction grating.

Ray Diagrams:

The Huygens Principle:

Young's Double Slit Experiment:

Single Slit Diffraction:

Diffraction Grating Problems:

Polarization of Light Problems:

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Brewster's Angle:

Planck's Constant and Blackbody Radiation:

Photon Momentum and Effective Mass:

Wien's Law:

Compton Effect & Wavelength:

Physics 2 Final Exam Review:

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Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

[nontlerembeyi]

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[iphoneeeful]

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[沈む瀬あれば浮かぶ瀬あり]

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[brd]

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[cornettdavies]

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[wobblyjohn]

Error in defining 'd' at 1:27.

[albertnoub]

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[geoffphillips]

Hi, great vids! Quick question if d=1/N, N = number of lines per meter, for example, d= slit spacing… then are we counting the end edge of the diffraction grating as 1slit? Take a diffraction grating of 1m with one line ( slit) in the middle, we know slit spacing is 0.5 m … we know there are 2 slit spacings & 1 slit. But applying the formula without counting end edge as 1 slit we get o.5 = 1/1 … instead of 0.5=1/2 ( counting the end edge as a slit. ) I hope this makes sense.. thanks 🙏