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Fringe Width Formula

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Fringe Width is the distance between two consecutive bright or dark fringes in an interference pattern, typically measured from the center of a bright fringe to the center of the next bright fringe. Check FAQs

β = \frac{λ \cdot D}{d}

β - Fringe Width?λ - Wavelength?D - Distance between Slits and Screen?d - Distance between Two Coherent Sources?

Fringe Width Example

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Here is how the Fringe Width equation looks like with Values.

Here is how the Fringe Width equation looks like with Units.

Here is how the Fringe Width equation looks like.

51.0717 = \frac{26.8 \cdot 20.2}{10.6}

51.0717cm = \frac{26.8cm \cdot 20.2cm}{10.6cm}

51.0717 = \frac{26.8 \cdot 20.2}{10.6}

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Fringe Width Solution

Follow our step by step solution on how to calculate Fringe Width?

FIRST Step Consider the formula

β = \frac{λ \cdot D}{d}

Next Step Substitute values of Variables

∴

β = \frac{26.8cm \cdot 20.2cm}{10.6cm}

Next Step Convert Units

∴

β = \frac{0.268m \cdot 0.202m}{0.106m}

Next Step Prepare to Evaluate

∴

β = \frac{0.268 \cdot 0.202}{0.106}

Next Step Evaluate

∴

β = 0.510716981132076m

Next Step Convert to Output's Unit

∴

β = 51.0716981132076cm

LAST Step Rounding Answer

∴

β = 51.0717cm

Fringe Width Formula Elements

Variables

Fringe Width

Fringe Width is the distance between two consecutive bright or dark fringes in an interference pattern, typically measured from the center of a bright fringe to the center of the next bright fringe.

Symbol: β

Measurement: LengthUnit: cm

Note: Value can be positive or negative.

Formulas to find Fringe Width

Wavelength

Wavelength is the distance between two consecutive peaks or troughs of a wave, which is a fundamental property of a wave that characterizes its spatial periodicity.

Symbol: λ

Measurement: LengthUnit: cm

Note: Value can be positive or negative.

Formulas to find Wavelength

Distance between Slits and Screen

Distance between Slits and Screen is the distance between the slits and the screen in a Young's double-slit experiment, used to measure the interference pattern of light waves.

Symbol: D

Measurement: LengthUnit: cm

Note: Value should be greater than 0.

Formulas to find Distance between Slits and Screen

Distance between Two Coherent Sources

Distance between Two Coherent Sources is the distance between two sources that emit waves in phase with each other, resulting in an interference pattern.

Symbol: d

Measurement: LengthUnit: cm

Note: Value can be positive or negative.

Formulas to find Distance between Two Coherent Sources

Other formulas in Young's Double Slit Experiment (YDSE) category

Go Path Difference for Constructive Interference in YDSE

Δx CI = \frac{y CI \cdot d}{D}

Go Path Difference in Young's Double-Slit Experiment

Δx = \sqrt{{(y + \frac{d}{2})}^{2} + D^{2}} - \sqrt{{(y - \frac{d}{2})}^{2} + D^{2}}

Go Path Difference for Maxima in YDSE

Δx max = n \cdot λ

Go Path Difference in YDSE given Distance between Coherent Sources

Δx = d \cdot \sin (θ)

How to Evaluate Fringe Width?

Fringe Width evaluator uses Fringe Width = (Wavelength*Distance between Slits and Screen)/Distance between Two Coherent Sources to evaluate the Fringe Width, Fringe Width formula is defined as a measure of the distance between two consecutive bright or dark fringes in an interference pattern, which is a fundamental concept in optics and physics, used to describe the distribution of light intensity in a given region. Fringe Width is denoted by β symbol.

How to evaluate Fringe Width using this online evaluator? To use this online evaluator for Fringe Width, enter Wavelength (λ), Distance between Slits and Screen (D) & Distance between Two Coherent Sources (d) and hit the calculate button.

FAQs on Fringe Width

What is the formula to find Fringe Width?

The formula of Fringe Width is expressed as Fringe Width = (Wavelength*Distance between Slits and Screen)/Distance between Two Coherent Sources. Here is an example- 5107.17 = (0.268*0.202)/0.106.

How to calculate Fringe Width?

With Wavelength (λ), Distance between Slits and Screen (D) & Distance between Two Coherent Sources (d) we can find Fringe Width using the formula - Fringe Width = (Wavelength*Distance between Slits and Screen)/Distance between Two Coherent Sources.

Can the Fringe Width be negative?

Yes, the Fringe Width, measured in Length can be negative.

Which unit is used to measure Fringe Width?

Fringe Width is usually measured using the Centimeter[cm] for Length. Meter[cm], Millimeter[cm], Kilometer[cm] are the few other units in which Fringe Width can be measured.

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Fringe Width Formula

Fringe Width Example

Fringe Width Solution

Fringe Width Formula Elements

Other formulas in Young's Double Slit Experiment (YDSE) category

How to Evaluate Fringe Width?

FAQs on Fringe Width

Variable Name