2. Do you like this show?
YES.
Can you know about
this rays?
YES,We know about
laser rays.

3. LASER
TO DAY WE ARE DISCUSSING
ABOUT LASER RAYS.
THESE RAYS ARE USED IN
MANY AREAS, LIKE
INDUSTRIAL,SCIENCE&TEC
HNOLOGY,MEDICINE,DEFEN
CE AND SPACE SCIENCE
ECT.

4. 1.INTRODUCTION.
2.ABBREVATION OF
LASER.
3.TYPES OF LASER.
4.APPLICATIONS OF
LASERS.

6. The basic scientific principle
behind a laser was first put forward
by DR. charles H.townes in 1954.
The efforts of several scientists
laser led to the development of the
first laser called pulsed laser in
1960.

8. VARIOUS TYPES OF LASERS ARE NOW IN
OPERATION WHICH CAN BE BROADLY
CLASSIFIED INTO:

9. SOLID STATE LASERS
EX: RUBY LASER
LIQUID AND DYE LASERS
GASEOUS LASERS
EX:HE-NE LASER

12. 1.LASERS HELPED IN UNDERSTANDING AND OFFERING
CLARIFICATIONS FOR MANY BASIC PROBLEMS OF
SCIENCE AND TECHNOLOGY
2.WITH THE HELP OF HE-NE LASER,IT WAS PROVED
THAT THE VELOCITY OF LIGHT IS SOME IN ALL
DIRECTIONS.
3.IN ASTRONOMY, LASERS HELPED IN EXTENDING THE
DISTANCE OF OBSERVATION OF STELLAR OBJECTS AND
STUDY THEIR NATURE.

13. THE COUNTING OF
ATOMS IN A SUBSTANCE
BECAME POSSIBLE
BECAUSE OF LASER.
IN COMPUTERS, LASERS
ARE USED TO RETRIEVE
STORED INFORMATION
FORM A COMPACT
DISC(CD)

15. LASERS ARE USED IN
FIBRE-OPTIC
ENDOSCOPETO
DETECT ULCERS IN
THE INTESTINES.
LASERS ARE USED FOR
BLOODLESS SURGERY.

16. Lasers are used extensively in the
treatment of eye-
diseases,particularly to reattach a
detached retina.
The liver and lung
diseases could be treated
by lasers.

18. LASERS ARE USED NOW FOR
CUTTING, DRILLING AND
WELDING OF METALS AND
OTHER MATERIALS.
LASER LIGHT IS USED TO
COLLECT THE
INFORMATION ABOUT THE
PREFIXED PRICES OF
VARIOUS PRODUCTS IN
SHOPS AND BUSINESS
ESTABLISHMENTS FROM
THE BAR-CODE PRINTED ON
THE PRODUCT.

20. LASER ARE USED IN SPACE
COMMUNICATION, IN RADARS AND IN
SATELLITES.

21. LASERS ARE USED IN VARIOUS GUIDED
MISSILES AND ALSO FOR DETECTION OF
ENEMY TARGETS.

22. NOWADAYS, A STUDENT CAN FLY A PLANE WITH THE
HELP OF LASER RAYS. MAN HAS INVENTED TO FLY A
PLANE WITHOUT USING ANY FUAL.
LASER IS USEFUL TO MANKIND IN MANY
WAYS. IN FUTURE, MANY UNBELIEVABLE THINGS
ARE GOING TO HAPPEN WITH THE USE OF LASER
RAYS.