Sorry to highlight.
Actually, there is no concrete proof on saying that cellphones can cook your brain cells until today. There are on going research on this matter.
Nowadays cellphones, the intensity(the power) of transmission signal is low and it should follow the FCC(Federal Communications Commission (FCC) is an independent United States government agency) (Malaysia also use similar regulation of FCC) regulations.
Commercially, available electronic products is been designed to give minimum effect on human healty (not dont have effect, but minimum). That is the reason, Malaysian government still allow public to use cellphones, or else they might had banned it, isnt it? :-)

There are many criteria that we have to consider to say, whether we going to have harm on our body, if we are exposed to Electromagnetic wave (eg UV) or not. Few of it are :-
a) wavelength
b) intensity of the wave
c) how long you been exposed
d) maybe, which part of you body is exposed

In (a) usually, the shorter the wavelength is more harmful for our human body, but you have to remember that it not necessarily, that the penetration is deep into our body.
(b) The more the intensity, the more energy the wave carries. The more energy it carries, its more hamful.
© Simply, more time exposed, more teruk la.
(d) We have some organs that not protected well, such as our skin.

So, no one can ever tell, in certain that UV from CCFL is harmful or not (maybe in general we can predict). Unless you refer to its manual(if got), or you do the measurement of (a), (b) and ©.
Pls feel free to correct me if i am wrong.

UV is not in the visible spectrum!! (not in natural light)
UV is higher frequency than in visible light(means shorter wavelegth, like you said). And yes, it can carry higher enegry per photon(~12eV)



This post has been edited by ryansxs: Sep 19 2006, 11:38 PM

We are not off-topic, we are still talking about UV.
I did not said you can see UV. Human eyes can only see visible spectrum of electromagnetic wave. Thats the reason its called "VISIBLE!!!"

Oh my God! Where you got the statement of UV is between indigo to transparent???
Do you know indigo is in visible range of spectrum? And UV is at the END of visible range of spectrum(at the higher frequency side of visible spectrum). Please see this link.
http://en.wikipedia.org/wiki/Electromagnetic_spectrum

This post has been edited by ryansxs: Sep 20 2006, 12:24 AM

Its not criticizing. We are in forum, we correct each others mistakes, thats all. We are just share information in here, arent we?.
Its no harm to talk about physics and other science subject, if the topic is related isnt it? hehe!
If the TS ask the question, "Does UV Light harm you?, the one they use for PC decoration." and we answer....."yes" (or "no") Then im sure TS also sien seeing our replies...hehe!
Anyway, i guess we had made our points clear here. I hope, we had shared some good information with others.

Cheers to you mate!