BOLLU SRINIVAS
Last Activity: 9 Years ago
Freshnal difraction: both the point source and screen is relatively close to the obstacle then forms difraction pattern. this situation is described as near field diffraction or freshnal diffraction.
Fraunhoffer diffraction: IF the source, obstacle and screen are far enough away that all lines from source to the obstacle can conside parllal,this pnenomenon is called fraunhoffer diffraction.
We will use fraunhofffer diffrction is usually simpler to analyze.
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