eNewsletter   HtmlText
 Home | Feedback |  About us | Contact us | Advertising |  Site Map Wednesday, 22 November 2017 
 Current Issue
 Cover Story
 What's new
 New Releases
 Top 5 Phones
 Phone Reviews
 Future Phones
 Mobile Accessories
 Price Guide
 Buyer Guide
 
 Site Features
 Dealer Search
 Phone Comparisons
 Service Centres
 Manufacturers
 Service Providers
 Organisations
 Mobile Glossary
 Downloads
Cover Story
Previous Print Forward Opinion Next
Radiation? Who cares?! - iMobile.com.au Radiation? Who cares?!

22 May 2002
By Richard Browning & Kinny Cheng

Have you ever got off the phone after your third round of “freetime” and felt that warm fuzzy feeling? No, not THAT warm and fuzzy feeling! The feeling you get on the side of your face just after an extended phone call. Ever wondered why your ear and surrounding flesh is warm and glowing a dull red? Could it be the warmth of the phone rubbing off on your head or perhaps the sheer grating quality of your girlfriend’s voice?

Or was it the side effect of holding something to your head for 20 minutes at a time or perhaps something a little bit more sinister? Luckily for the common man, there are some very interesting people out there who have researched this very query for us.

The concerns of the general public for a long time have been in the field of mobile phone radiation. People see a possible danger in holding an electro-magnetic device very close to their brain and are therefore concerned - worried and even stressed about the damage this may be doing to their health, future well-being, life-span and the doctor’s bill. The main problem faced at the moment, though, is a lack of conclusive evidence. Some research has been done, but the results lack dramatic-enough results to stir a big reaction in the public eye.

What radiation?

Many people may actually be confused with what they are actually being exposed to when a person is either using a mobile phone right next to their ear, or just sitting right next to someone who is. Those same people may simply refer to it as being “radiation”, which is probably correct if you know the difference between ionizing and non-ionizing radiation.

We all know that prolonged exposure to X-rays or gamma rays have been proven to cause health problems, where these are classified as ionizing radiation. Mobile phones and other similar communication devices (for example, walkie-talkies) use radio frequency (RF) fields to establish links with other devices - where these fields are classified as non-ionizing. In other words, the difference with ionizing and non-ionizing fields is that the former can produce ionization and radioactivity inside the human body, where the latter doesn’t. Confusing these two together may lead someone thinking that they’re carrying an always-on X-ray machine around in their pocket or purse!

The maximum amounts of non-ionizing radiation that mobile phone handsets normally produce are around 0.2 to 0.6 watts, and are considered to be low-powered RF transmitters. A walkie-talkie, for example, produces around 10 watts. Although far greater than a mobile phone, one must consider that a walkie-talkie is not used next to the ear for a prolonged timeframe, while a mobile phone is. Where the RF field strength decreases significantly when the device is located further away, exposure to such non-ionizing radiation is also dramatically reduced. Therefore, the use of devices such as handsfree headsets and car kits are valid candidates in achieving a reduction in direct RF exposure to the head.

But why do we still feel that warm fuzzy feeling at our ears after my “freetime” sessions if we’re not exposed to cancer-causing radiation? One simple explanation is because our body absorbs the RF energy that is produced by a mobile phone, and becomes heated once absorbed. Where the RF fields initially penetrate our body’s exposed tissue and works its way in, depth of penetration depends on the frequency of the RF fields. In the case of mobile phones frequencies, this can be up to a centimetre (no wonder we sometimes get those headaches!) If you’re worried about getting a fever from using a mobile phone, the fact is you won’t - simply because our body’s normal thermoregulatory processes carries this heat away.

According to the World Health Organisation’s information on electromagnetic fields relating to the use of mobile phones on public health, “all established health effects of RF exposure are clearly related to heating; and while RF energy can interact with body tissues at levels too low to cause any significant heating, no study has shown adverse health effects at exposure levels below international guideline limits.”

<Page 1 of 3>

Next Page


Radiation? Who cares?!

Table of contents

Table of contents:

What radiation? (Page 1)
What will it take? / What's been done so far? (Page 2)
Filters the phones? / Fact, or fiction? (Page 3)


Buyer Guide

Buyer Guide

Much time has passed since our original megapixel camera phone comparison article of late 2004, and manufacturers have had the opportunity to improve the...
More details...

Advertisements
click here
[Feb 2008]
World Mobile Congress 2008
[Jul 2007]
The CDMA turnoff - Where to now?
[Feb 2007]
GPS in Mobile Phones
[Aug 2006]
Wireless Japan 2006
[Jun 2006]
CommunicAsia Singapore 2006
[Feb 2006]
3GSM World Congress 2006
[Jun 2005]
3 against 7 @ CommunicAsia
[Feb 2005]
3GSM World Congress 2005
[Dec 2004]
Email by over the phone
[Aug 2004]
Banking on M-Commerce
[Jul 2004]
3G & i-mode
[May 2004]
CeBIT Australia 2004
[May 2004]
Mobile Phone Safety
[Mar 2003]
CeBIT excerpt #2
[Mar 2003]
CeBIT excerpt #1
[Dec 2002]
Congestion tunes out Optus users
[Nov 2002]
Mobile Messaging - SMS me now!
[Jul 2002]
Find your phone with Find A Phone
[May 2002]
Radiation? Who cares?!
[Sep 2001]
Mobile Number Portability
[Mar 2001]
Upcoming Smartphones - More PC than Mobile Phone!
[Feb 2001]
3G - When will it be a Reality?
[Jan 2001]
Have you ever..Talked to the Internet?
[Dec 2000]
Mobile Phone and PDA Rolled Into One?
[Nov 2000]
iMode - Future of 3G?
[Oct 2000]
Mobile Commerce
[Sep 2000]
Mobile Computing
[Aug 2000]
Concept Phones – A Peek Into Our Mobile Future
[Jul 2000]
CommunicAsia 2000 in Singapore
[Jun 2000]
Create your own free Personal WAP Site
[May 2000]
Personalise your Mobile with LogoManger
 
Previous Print Forward Opinion Next
| Home |  | Site Map |  | Contacts |  | About us |  | Feedback |  | Advertising |  
Last Updated on 31 March, 2009
Copyright 2000-2008  iMobile.com.au  All Right Reserved  Terms of Use