RADIATION EFFECTS & UR MOBILE - QUANTIFIED

1. We all hear about how the radiations emitted from our mobiles keep effecting us on the wrong side……but what are the specifications laid down for quantification of these effecting variables? What are these variables ?How much do they effect us? Do separate mobile handsets effect us in different ways?Are their any safe limits in these? What are the available standards?

2. The first and the most significant variable is the Specific absorption rate (SAR) , a measure of the rate at which energy is absorbed by the body when exposed to a radio frequency (RF) electromagnetic field. It is defined as the power absorbed per mass of tissue and has units of watts per kilogram. SAR is usually averaged either over the whole body, or over a small sample volume (typically 1 g or 10 g of tissue). The value cited is then the maximum level measured in the body part studied over the stated volume or mass.

3. SAR is used to measure exposure to fields between 100 kHz and 10 GHz. It is commonly used to measure power absorbed from mobile phones and during MRI scans. Few specifications of good and bad mobiles as found rated from TOI site at their INFOTECH tab are shown below with details :

SAMSUNG IMPRESSION : GOOD

Maximum radiation: 0.35 Watts per kilogram (W/kg) (based on reported radiation level when held up to your ear)

SAR when held at the ear: 0.35 W/kg

SAR when worn on the body: 0.83 W/kg

MOTOROLA RAZR V8 : GOOD

Maximum radiation: 0.36 W/kg

SAR when held at the ear: 0.36 W/kg

SAR when worn on the body: 0.86 W/kg

SAMSUNG SGH-T229 : GOOD

Maximum radiation: 0.38 W/kg

SAR when held at the ear: 0.38 W/kg

SAR when worn on the body: 0.69 W/kg

MOTOROLA MOTO VU204 : WORST

Maximum radiation: 1.55 W/kg

SAR when held at the ear: 1.55 W/kg

SAR when worn on the body: 0.58 W/kg

BLACKBERRY CURVE 8330 : WORST

Maximum radiation: 1.54 W/kg

SAR when held at the ear 1.54 W/kg

SAR when worn on the body 0.99 W/kg

4. United States: The FCC requires that phones sold have a SAR level at or below 1.6 watts per kilogram (W/kg) taken over a volume of 10 gram of tissue while European Union specify SAR limits within 2 Watts/kg taken over a volume of 10 gram

5. So next times some one asks you or even mentions about radiation effect of mobiles on health….just make the aspect more clear of weather of not his/her mobiles in meeting the S.A.R norms or not?

6. Thanks Wiki,Tech gadgets and TOI.

HP and VLC at logger heads?

1. One fine evening last week,suddenly my speakers of laptop dozed of permanently...I mean no sound output.I took it as a regular audio driver conflict since I keep installing and uninstalling softwares on my laptop.So in next few days...i tried fiddling with the drivers....did fresh installations...but kuch kaam na aaaya!!!

2. Since I am addicted to keep the speakers ON for music everytime I am working,I thought the layman's idea of formatting would come as the best and easiest solution...so I went ahead and formatted the system and installed a fresh Vista premium OS.But.......sameproblem stood again.....I thought may be my speakers have conked off............which is unlikely otherwise........

3. Today came another close friend of mine Sunil with a similar problem....in his notebook Compaq.He gave me an astoundingly unbelievable news......that after he called up his HP auth dealer with the problem he got this answer ........"The laptop will not cover under warranty if its identified that the diagonse report finds the user used the VLC player.".............

4. Shocking indeed for me..............I have been using VLC Player of and on with media player classic at times regularly.When I googled on this i got few threads which said the same thing.......these threads include the following links :

a. http://www.infoinfi.com/2009/01/29/hp-and-vlc-player-on-conflict/

b. http://forum.videolan.org/viewtopic.php?f=14&t=57589

5. So did i screw my speakers because of VLC ? Pl answer...............any one....?????

6. The extract of one of the threads is reproduced below :

" The Biggest Computer system vendor HP (Hewlett Packard) reporting their laptop customers to not to use VLC Player.VLC Player is the popular open source video player software among a lot of computer users. Recently HP laptop users facing a inbuilt speaker problem, which is often getting malfunction across the users. The official HP service center executives advicing the laptop users to stop using the VLC player to watch, play media files. They reporting that playing a media files using VLC Player causing the damage to the built in speakers.As an additional information the official HP service center executives informing the customers bring the laptop to service for the build in speaker problem that , “the laptop will not cover under warranty if its identical that the diagonse report finds the user used the VLC player.” "