Diffraction
Chapter Name : Wave Optics |
Sub Topic Code : 101_12_10_06_03 |
Topic Name : Diffraction |
|
Sub Topic Name : Seeing The Single Slit Diffraction Pattern |
|
Introduction
The diffraction phenomenon is described as the apparent bending of waves around small obstacles and the spreading out of waves past small openings.
Pre-Requisites:
Diffraction
Activity:
The closely spaced tracks on a CD or DVD act as a diffraction grating to form the familiar rainbow pattern seen when looking at a disk.
Real Life Question:
What is diffraction?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Reflection | Diffraction refers to various phenomena which occur when a wave encounters an obstacle. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|
Places to visit :
CD rack
Practical examples around us
| Examples | Explainations |
|---|---|
| CD, DVD | The closely spaced tracks on a CD or DVD act as a diffraction grating to form the familiar rainbow pattern seen when looking at a disk. |
What you learn in Theory:
This principle can be extended to engineer a grating with a structure such that it will produce any diffraction pattern desired.
What you learn in Practice:
This principle can be extended to engineer a grating with a structure such that it will produce any diffraction pattern desired.