Double Slit Interference

Multiple slits
Include diffraction
Examine approximation
Calculation
Single slit diffraction
Comparison to single slit
 Index

Interference concepts
 
HyperPhysics***** Light and Vision R Nave
 Go Back





Double Slit Interference

Displacement y = (Order m x Wavelength x Distance D)/(slit separation d)

For double slit separation d = micrometers = x10^ m

and light wavelength l = nm at order m =,

on a screen at distance D = cm

the displacement from the centerline for maximum intensity will be

= cm.

This corresponds to an angle of q = ° .

This calculation is designed to allow you to enter data and then click on the quantity you wish to calculate in the active formula above. The data will not be forced to be consistent until you click on a quantity to calculate. Default values will be entered for unspecified parameters, but all values may be changed.

Note: The small angle approximation was not used in the calculations above, but it is usually sufficiently accurate for laboratory calculations.

Multiple slits
Include diffraction
Examine approximation
 Index

Interference concepts
 
HyperPhysics***** Light and Vision R Nave
 Go Back