10A Superposition

10.1 INTERFERENCE
10.1.1 Principle of Superposition
10.1.2 Phase Difference
10.1.3 Path Difference

10.2 RIPPLE TANK
10.2.1 Two-Source Interference Pattern
10.2.2 Necessary Conditions for Interference

10.3 DOUBLE SLIT
10.3.1 Double Slit Interference Pattern
10.3.2 Derivation of the dsinθ Formula
10.3.3 Derivation of the Lλ/d Formula
10.3.4 Young’s Double Slit Experimental Set-up

10.4 DIFFRACTION GRATING
10.4.1 N-slit Interference Pattern (Beyond the Syllabus)
10.4.2 Diffraction Grating Interference Pattern
10.4.3 White Light Interference Pattern

10.5 SINGLE-SLIT
10.5.1 Single-Slit Interference Pattern
10.5.2 Derivation of the bsinθ Formula (Beyond the Syllabus)
10.5.3 Diffraction
10.5.4 Diffraction Envelope
10.5.5 Rayleigh’s Criterion

For the PDF version, click here.

Demonstrations: Click here

Explanation Videos: Click here

Animations: Click here

Applet:
Two source Interference
https://ngsir.netfirms.com/englishhtm/Interference.htm
https://ngsir.netfirms.com/englishhtm/Interference2.htm
https://www.walter-fendt.de/html5/phen/interference_en.htm

Double Slit
https://www.walter-fendt.de/html5/phen/doubleslit_en.htm

Grating
http://ngsir.netfirms.com/englishhtm/MultipleSources.htm

Single Slit
https://www.walter-fendt.de/html5/phen/singleslit_en.htm

Diffraction
Slit: http://ngsir.netfirms.com/englishhtm/Diffraction.htm
Obstacle: http://ngsir.netfirms.com/englishhtm/Diffraction2.htm
Corner: http://ngsir.netfirms.com/englishhtm/Diffraction3.htm

Diffraction Envelope
https://groups.physics.northwestern.edu/vpl/optics/diffraction.html

Rayleigh’s Criterion
https://www.compadre.org/osp/items/detail.cfm?ID=8198