The document discusses different types of electromagnetic waves including radio waves, microwaves, infrared waves, visible light, ultraviolet rays, X-rays, and gamma rays. It provides details on radio waves, microwaves, and infrared waves. For radio waves, it notes they can travel long distances and are generated artificially and received via antennas. Microwaves have shorter wavelengths than radio waves and do not reflect off the ionosphere. Infrared waves are used for thermal imaging but no specific uses are mentioned.

1. E.M.G YADAVA WOMEN’S COLLEGE, MADURAI-14.
(AN AUTONOMOUS INSTITUTION-AFFILIATED TO MADURAI KAMARAJ
UNIVERSITY)
RE-ACCREDITED (3RD CYCLE)WITH GRADE A+ AND CPGA 3.51 BY NAAC
TOPIC: ELECTROMAGNETIC WAVES
Mrs. S. Ameer Nisha Bibi
Department of physics
E.M.G Yadava Women’s College , Madurai

2. DEFINITION
• Electromagnetic Waves are
created as a result of vibrations
between electric field and
magnetic field
• In other words Waves are
composed of oscillating
Magnetic and electric fields.

3. TYPES OF ELECTROMAGNETIC
WAVES
• RADIO WAVES
• MICRO WAVES
• INFRARED WAVES
• VISIBLE LIGHT
• ULTRAVIOLET RAYS
• X-RAYS
• GAMMA RAYS

4. • Radio waves are a type
of electromagnetic
Radiation With waves in
the electromagnetic
spectrum Longer than
infrared light
• Radio waves are
generated artificially by
transmitter and received
by radio Reciever using
antenna

5. PROPERTIES OF
RADIOWAVES
1. Radio waves can travel for a long
distance
2. Radio waves can penetrate through
materials
3. Radio waves cannot be felt and
they are invisible
4. Wavelength range of radio waves is
from thousands of meters to 30 cm
5. Frequency from 3HZ to 10HZ

6. MICRO WAVES
• DEFINITION

7. PROPERTIES OF MICRO WAVES
It was shorter
wavelength
Micro waves are not
reflected by ionosphere
It travels in a straight
line and are reflected by
the conducting surfaces
It easily attenuated
within shorter distances

8. INFRA RED WAVES
Uses:

9. X-RAY WAVES USES AND
APPLICATION
Uses
Breast
cancer

10. References:
• https://physics.info>emwaves
• https://science.jrank.org>pages>x-rays
• Liew,s.c “Electromagnetic waves”
• https://www.e-
education.psu.edu/astro801/content/13-p5html

11. THANK
YOU