Wireless Communication and Health Hazards of Mobile Phones

1. BY
ARINDAM GHOSH
ASSISTANT PROFESSOR
&
HEAD OF DEPARTMENT OF PHYSICS
DON BOSCO COLLEGE, TURA

2. FORMATION OF RADIATION

3. ELECTROMAGNETIC SPECTRUM

5. ELEMENTS OF COMMUNICATION
SYSTEM

6. HISTORY OF COMMUNICATION
SYSTEM
• Early days: Use of drum beating and trained
pigeons
• 13th – 16th century: Use of messengers
• 19th century: Postal Services, Telegraph,
Telephone, Wireless Telegraphy
• 20th century: Television, FAX, ARPA, Fiber
Optics, World Wide Web (Internet)

7. WIRELESS COMMUNICATION
• WIRELESS COMMUNICATION IS THE TRANSFER OF
INFORMATION BETWEEN TWO OR MORE POINTS THAT ARE
NOT CONNECTED BY AN ELECTRICAL CONDUCTOR.
• The most common wireless technologies use RADIO WAVES.
• It encompasses various types of fixed, mobile, and portable
applications, including two-way radios, cellular telephones,
personal digital assistants (PDAs), and wireless networking.
• Applications of radio wireless technology include GPS units,
garage door openers, wireless computer mice, keyboards and
headsets, headphones, radio receivers, satellite television,
broadcast television and cordless telephones.

8. EARTH’S
ATMOSPHERE

9. TYPES OF WAVE PROPAGATION

10. BLOCK DIAGRAM OF
COMMUNICATION SYSTEM

11. INSIDE THE MICROPHONE & SPEAKER
TRANSDUCERS

12. TYPES OF MODULATION

13. SOURCES OF WIRELESS RADIATION
 Cell phones
 Cell towers
 Cordless phones
 PDA’s – Blackberry, Treo, iPhone
 Wireless games (Wii)
 Baby monitors
 Smart Meters
 Wireless Internet – Wi-Fi, Wi-Max,
WLAN

14. HEALLTH HAZARDS OF
MOBILE PHONES

15. SOME OF THE IMPACTS…..
• 10. Impaired Concentration/ Memory/ Learning
Capacity
• 9. General Sickness/ Nausea/ Thyroid/ High BP/
High Blood Sugar
• 8. Eye Problems
• 7. Increased Stress/ Headache/ Sleep Problems
• 6. Risks to the Unborn
• 5. Neurodegenerative Disorders
• 4. Heart Risks
• 3. Reduced Fertility
• 2. Loss of Hearing
• 1. Brain Cancer

17. LONG TERM – ACCELERATED AGING
 Childhood & adult leukemia,
 Childhood & adult brain tumors
 Increased risk of Alzheimers and
neurodegenerative diseases
 Altered immune function including
increased allergic & inflammatory
responses
 Pathological leakage brain/blood
barrier
 Genotoxic effects (DNA damage)

18. WHY IS WI-FI SO DANGEROUS?
 It constantly transmits at full power –
doesn’t decrease power when not in
use
 It is on 24/7
 Exposure to full power microwave
pulses from router every few seconds
even if computer off
 Scientifically proven biologically active
 Evidence of cumulative effects

23. DO NOT SLEEP WITH MOBILE
PHONE UNDER THE PILLOW

25. Prefer SMS over calls

27. AVOID LIVING NEAR BASE STATIONS

28. “Cell phones are
so convenient
that they causes
inconvenience.”