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From Karnataka Open Educational Resources
→Concept #2 - Wave Nature of Light
#[http://www.youtube.com/watch?v=CN-wjj_phVA Thomas Young's Double Slit Experiment]
#[http://www.youtube.com/watch?v=CN-wjj_phVA Thomas Young's Double Slit Experiment]
===Activity No # 1 - Simulation of double slit experiment===
===Activity No # 1- Reflection, Refraction and Diffraction as waves===
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''[http://karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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The objective is to demonstrate how we can explain the phenomena of light - reflection, refraction - through the wave model.
The teacher must reconcile the rays to the wave model.
* '''Estimated Time''' - 40 minutes
* '''Materials/ Resources needed'''<br>
Computer, Projector, Blackboard
* '''Prerequisites/Instructions, if any'''<br>
Simulation of the double slit experiment
* '''Multimedia resources'''
* '''Website interactives/ links/ simulations'''
{|class="wikitable"
|-
|[[File:Reflection_and_refraction.png|300px|link=http://www.olympusmicro.com/primer/java/reflection/huygens/index.html]]
|[[File:diffraction.png|300px|link=http://www.olympusmicro.com/primer/java/diffraction/index.html]]
|}
<br>Source:[http://www.olympusmicro.com/ Olympus Microscopy Centre]
* '''Process (How to do the activity)'''
After discussing the simulation, explain the process of reflection and refraction in waves
* '''Developmental Questions (What discussion questions)'''
#Have you seen any waves?
#When they encounter an obstruction what do they do? (They bounce back, they bend around, etc_
#In this image, what do you see happening to the wavefronts - they get reflected, they get refracted
#How can we represent this using a ray diagram?
* '''Evaluation (Questions for assessment of the child)'''
Observe the student response to above questions
* '''Question Corner'''
===Activity No # 2 - Simulation of double slit experiment===
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|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
* '''Question Corner'''
* '''Question Corner'''
===Activity No # 2- Explain the double slit experiment===
===Activity No # 3- Explain the double slit experiment===
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#The interaction between two waves is called interference
#The interaction between two waves is called interference
#This can be constructive or destructive interference
#This can be constructive or destructive interference
* '''Evaluation (Questions for assessment of the child)'''
* '''Evaluation (Questions for assessment of the child)'''
Observe the student response to above questions
Observe the student response to above questions
