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Young’s Double Slit Experiment

Young’s Double Slit Experiment

by Kajan Juraj (5piptus5@gmail.com

Experiment description

 

https://courses.lumenlearning.com/austincc-physics2/chapter/27-3-youngs-double-slit-experiment/

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Young’s Double Slit Experiment

Young’s double-slit experiment. Here pure-wavelength light sent through a pair of vertical slits is diffracted into a pattern on the screen of numerous vertical lines spread out horizontally. Without diffraction and interference, the light would simply make two lines on the screen.

 

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Young’s Double Slit Experiment

Double slits produce two coherent sources of waves that interfere. (a) Light spreads out (diffracts) from each slit because the slits are narrow. These waves overlap and interfere constructively (bright lines) and destructively (dark regions). We can only see this if the light falls onto a screen and is scattered into our eyes. (b) The double-slit interference pattern for water waves is nearly identical to that for light. Wave action is greatest in regions of constructive interference and least in regions of destructive interference. (c) When the light that has passed through double slits falls on a screen, we see a pattern such as this.

 

Experiments on our laser bench

 

Double slit 

Young’s Double Slit Experiment

 

Young’s Double Slit Experiment

 

with a knife, we cut slits with different slit distance, (match for dimension reference)

 

experimental installation setup 

Young’s Double Slit Experiment

 

laser 

Young’s Double Slit Experiment

 

slit with numbers 1-4 

Young’s Double Slit Experiment

 

laser at low power aimed at the slit number 1 

Young’s Double Slit Experiment

 

laser at full power aimed at the slit number 1 

Young’s Double Slit Experiment

 

interference pattern from slit number 1 

Young’s Double Slit Experiment

 

laser aimed at the slit number 3 

Young’s Double Slit Experiment

 

interference pattern from slit number 3

 

 

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 Young’s Double Slit Experiment

 

Single slit

Young’s Double Slit Experiment

 

http://labman.phys.utk.edu/phys222core/modules/m9/diffraction.htm

 

 

cut single slit (in the blue cross)

Young’s Double Slit Experiment

 

laser at low power aimed at the single slit 

Young’s Double Slit Experiment

interference pattern from a single slit

 

Young’s Double Slit Experiment

 

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