Thin-film destructive interference in reflected light Solution

STEP 0: Pre-Calculation Summary
Formula Used
Destructive Interference = Number*Wavelength
Id = n*λ
This formula uses 3 Variables
Variables Used
Destructive Interference - Destructive Interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is canceled exactly by a negative displacement of the other wave.
Number - A number is a mathematical object used to count, measure, and label.
Wavelength - (Measured in Meter) - Wavelength can be defined as the distance between two successive crests or troughs of a wave.
STEP 1: Convert Input(s) to Base Unit
Number: 2 --> No Conversion Required
Wavelength: 26.8 Meter --> 26.8 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Id = n*λ --> 2*26.8
Evaluating ... ...
Id = 53.6
STEP 3: Convert Result to Output's Unit
53.6 --> No Conversion Required
FINAL ANSWER
53.6 <-- Destructive Interference
(Calculation completed in 00.000 seconds)

Credits

Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
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4 Thin-Film interference Calculators

Thin film constructive interference in reflected light
Constructive Interference = ((Number A+1)/2)*Wavelength Go
Thin-film destructive interference in transmitted light
Destructive Interference = ((Number A+1)/2)*Wavelength Go
Thin-film constructive interference in transmitted light
Constructive Interference = Number A*Wavelength Go
Thin-film destructive interference in reflected light
Destructive Interference = Number*Wavelength Go

Thin-film destructive interference in reflected light Formula

Destructive Interference = Number*Wavelength
Id = n*λ

What is thin-film interference ?

Thin-film interference is the phenomenon that is a result of lightwave being reflected off two surfaces that are at a distance comparable to its wavelength. When light waves that reflect off the top and bottom surfaces interfere with one another we see different colored patterns. During this, the light reaches the boundary between two media, and part of it gets reflected and some part gets transmitted.

When the second medium is a thin film, there are two reflections occurring close together at the top and bottom boundary surfaces of the thin film. Thus, there are two waves emerging from a thin film – one wave reflected off the top surface of the film and the other reflected off the bottom surface.

How to Calculate Thin-film destructive interference in reflected light?

Thin-film destructive interference in reflected light calculator uses Destructive Interference = Number*Wavelength to calculate the Destructive Interference, Thin-film destructive interference in reflected light is formed when a plane wave (parallel rays) is incident normally on a thin film of uniform thickness d then waves reflected from the upper surface interfere with the waves reflected from the lower surface. Destructive Interference is denoted by Id symbol.

How to calculate Thin-film destructive interference in reflected light using this online calculator? To use this online calculator for Thin-film destructive interference in reflected light, enter Number (n) & Wavelength (λ) and hit the calculate button. Here is how the Thin-film destructive interference in reflected light calculation can be explained with given input values -> 53.6 = 2*26.8.

FAQ

What is Thin-film destructive interference in reflected light?
Thin-film destructive interference in reflected light is formed when a plane wave (parallel rays) is incident normally on a thin film of uniform thickness d then waves reflected from the upper surface interfere with the waves reflected from the lower surface and is represented as Id = n*λ or Destructive Interference = Number*Wavelength. A number is a mathematical object used to count, measure, and label & Wavelength can be defined as the distance between two successive crests or troughs of a wave.
How to calculate Thin-film destructive interference in reflected light?
Thin-film destructive interference in reflected light is formed when a plane wave (parallel rays) is incident normally on a thin film of uniform thickness d then waves reflected from the upper surface interfere with the waves reflected from the lower surface is calculated using Destructive Interference = Number*Wavelength. To calculate Thin-film destructive interference in reflected light, you need Number (n) & Wavelength (λ). With our tool, you need to enter the respective value for Number & Wavelength and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Destructive Interference?
In this formula, Destructive Interference uses Number & Wavelength. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Destructive Interference = ((Number A+1)/2)*Wavelength
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