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1. A Project report on
Diffraction Of light
Submitted in partial fulfillment of the requirement of degree of
Diploma in Electronics and Telecommunication
Under
WEST BENGAL STATE COUNCIL OF TECHNICAL AND VOCATIONAL
EDUCATION AND SKILL DEVELOPMENT
Under the supervision of
Sr. Lecturer (Dept. Of Physics)
Rabishankar Pandit
Lecture in Physics
EIJE, HOWRAH
By
Name – Angkita Paul
Registration number - D212206307
Roll number – DEIJETCES2 – 10006308

2. Diffraction of Light
By Angkita Paul
Department: D-ETC
Reg. No : D212206307

3.  ACKNOWLEDGEMENT
 INTRODUCTION
 Light
 Waves
 Diffraction
 Double Slit
 Diffraction Grating
 Applications
 CD
 DVD
 Resolution
 Conclusion
CONTENTS :-

4.  ACKNOWLEDGEMENT
I would like to express my special thanks of gratitude to my teacher Mr. Rabishankar Pandit ,
who gave me the golden opportunity to do this wonderful project of Applied Physics-2 on
“Diffraction Of Light” who also helped me in completing my project. I come to know about so
many new things I am really thankful to them. Secondly I would also like to thank my parents
and friends who helped me a lot in finalizing this project with in the limited time frame.
ANGKITA PAUL
ELECTRONIC AND TELECOMMUNICATION ENGINEERING
2ND SEMESTER

5.  INTRODUCTION
A light wave is an electromagnetic wave that travels through the vacuum of
outer space. Light waves are produced by vibrating electric charges. It is
sufficient to merely say that an electromagnetic wave is a transverse wave
that has both an electric and a magnetic component.
The transverse nature of an electromagnetic wave is quite different from
any other type of wave. Let's suppose that we use the customary slinky to
model the behavior of an electromagnetic wave. As an electromagnetic wave
travelled towards you, then you would observe the vibrations of the slinky
occurring in more than one plane of vibration. This is quite different than
what you might notice if you were to look along a slinky and observe a
slinky wave traveling towards you. Indeed, the coils of the slinky would be
vibrating back and forth as the slinky approached; yet these vibrations
would occur in a single plane of space. That is, the coils of the slinky might
vibrate up and down or left and right. Yet regardless of their direction of
vibration, they would be moving along the same linear direction as you
sighted along the slinky. If a slinky wave were an electromagnetic wave,
then the vibrations of the slinky would occur in multiple planes. Unlike a
usual slinky wave, the electric and magnetic vibrations of an
electromagnetic wave occur in numerous planes. A light wave that is
vibrating in more than one plane is referred to as unpolarised light. Light
emitted by the sun, by a lamp in the classroom, or by a candle flame is
unpolarised light.

6.  LIGHT

8.  Waves
Frequency–the number of complete
cycles that pass a given point per unit
time
Period–the time required for one
complete cycle of a wave to pass a
given point along the line of travel

9.  Diffraction

10.  Double Slit Experiment
Each photon not only goes through both
slits, but also simultaneously traverses
every possible trajectory en route to the
target

11.  Diffraction Grating

12.  CD

13.  DVD

14.  Resolution

15.  Conclusion
• Diffraction –the spreading of light into a region behind an
obstruction
• All waves can be diffracted, not just light waves
• Wave diffraction affects us every day!

16. Thank You