Diffraction Grating Calculator, Formula With Examples

Diffraction grating Calculator :

Enter the Diffraction grating calculator its Wavelength in nanometers(nm), Grating density in millimeter(mm), Angle of incidence in deg, Diffracted images in deg, and you get the calculation below the calculator, you check it.

Diffraction Grating Calculator

Diffraction grating formula :

Diffraction grating formula is the wave length of light    λ (m) in meter and multiply the order of grating n(kg/ms-1) in kilogram per meter per second-1 is equal to the product of distance d(m) in meter and multiply the sin theta sinθn.Hence the Diffraction grating formula can be written as,

λ (m)*n(kg/ms-1)=d(m)* sinθn

Where,

N→ order of grating kg ms-1

d → distance in mm ,cm, m

λ→  wavelength of light in meter

θ → angle in degree

Example: 1

Calculate slit spacing? In a diffraction grating is of width 6 cm and produces a deviation of 400 in second order with the light of wavelength 600nm..

Answer:

Given,

Angle    θ=400

Order n=2

Wavelength    λ=600nm

Given by

λn=dsinθn

d=2 *600 *10-9/sin 400

d=1.42607 *10-6 m

Example: 2

Calculate slit spacing? In a diffraction grating is of width 8 cm and produces a deviation of 800 in second order with the light of wavelength 500nm.

Answer:

Given,

Angle    θ=800

Order n=2

Wavelength    λ=500nm

Given by

λn=dsinθn

d=2 *500 *10-9/sin 800

d= 1.18839 *10-6 m

 

 

 

 

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