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 Does UV Light harm you?, the one they use for PC decoration

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SUSAcey
post Sep 19 2006, 05:36 PM

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Yessuh, the UV lights will harmxor your skin. First your skin will feel itchy and hot. Then after sometimes near ur CPU for like a few months, your skin will start rotting from the inside. When your skin peel off, you'll see maggots in ur arms and ur bones with crack lines. After that you'll need to amputate your arm. The horror... the horror...
Skylinestar
post Sep 19 2006, 07:55 PM

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imagine the casing is on your table, on the right side of the monitor.
u are using your mouse on your right hand, therefore closest to the uv tube.
so, u use your pc for 7 hours. does it really affect our health since the right hand is placed so close to the uv tube?
LWRNCH6550
post Sep 19 2006, 08:15 PM

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QUOTE(| e 3 h y 0 r | @ Sep 19 2006, 05:16 PM)
logical but no doctor here ???? and why was the thread moved to here ler, i was expecting a doctor in the health category to answer my queries
*
you sound like ur in big trouble . Someone around u just got skin cancer or what ?
no offence .

copied from another forum
QUOTE
Longwave UV such as what you have for displays for the public, is not bad
for you if the intensity is low. The type of UV intensity used in your
computer, and for displays that are properly done, is okay to use.

High intensity UV in the longwave band would be dangerous at close range,
and with long exposer, if the proper eye protection is not used. Medium and
Shortwave UV are the dangerous ones to be concerned about, even at the low
power intensities.

The UV lamps sold to the public that are for displays or to illuminate a
room for entertainment, should not be dangerous. Just like any other light,
you should not stare in to it for any duration of time.

UV radiation can be blocked to a great extent with ordinary glass. UV tubes
and bulbs are made from a quartz mineral material to allow them to radiate
the UV rays.

Acrylic type materials are very transparent to UV radiation, and require
specialized coatings to pass the UV rays. When you have eye glasses that are
what we call the plastic lenses, they have to be coated to protect the
wearer from the UV rays coming in to his or her eyes.

Reflected UV light is also dangerous, if the intensity is high enough.
Materials that are giving off illumination from the UV light will not be as
dangerous, if the illumination is in the proper band for safe viewing.

As for any UV light, the less we look at it, the better off we are. UV
exposer will lead to the greater risk of cataracts, and other eye problems
over the long duration.
SUSAcey
post Sep 19 2006, 08:43 PM

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QUOTE(malaysianPotato @ Sep 18 2006, 11:43 PM)
wikipedia/google? these kind of questions really dont need a whole thread dedicated to them, answers can be gotten from simple searches on any decent search engine.
*
This is a good example of ppl who dont deserve to be in forums. First of all, I do lash out at mods sometimes (you're human im human, so what). THIS is a forum, people ASKED something to get some ANSWERS, they might not be as HIGH TECH as you are (or may I call it "nerdy") to know there's a wikipedia or another search engine besides Yahoo's.

@Threadstarter: The UV CCFL is black light, not like the true UV from the sun, so its harmless. Besides its inside the case and most of the time people put the case on the floor next to the table or on the table where the biggest part that's flashed by the black light is your pinky.
yamato
post Sep 19 2006, 10:24 PM

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QUOTE(LWRNCH6550 @ Sep 18 2006, 11:37 PM)
its harmless except when u are staring long time at it . if ur talking abt radiation like CRT monitors or PC radiation . Metal casings have better RF ( radio frequency ) shielding than those perspex case ( full transparent cases ).
*
light, any kind of them is electromagnetic radiation. the energy transfer of light is radiation.

Radio-frequency or RF is the use of a radio frequency magnetic field to transfer energy by means of induction in the near field.

there are some info out there combining RF with radiaotion which is totaly wrong since energy only tranfer in 3 forms:
1. radiation
2. conduction
3. induction

dont mixed up! smile.gif

QUOTE(MangKoK^ayon @ Sep 19 2006, 12:45 PM)
if it harms, they couldn't be selling it easily... whistling.gif:
*
cellphones do cook our brains, but guess what, u & i are buying, using, complaining but still using.

i called it stupidity.




Please use the "Quote" button. There's no need to do multiple replies.

This post has been edited by ianho: Sep 19 2006, 10:53 PM
ryansxs
post Sep 19 2006, 10:48 PM

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QUOTE(yamato @ Sep 19 2006, 10:32 PM)
cellphones do cook our brains, but guess what, u & i are buying, using, complaining but still using.

i called it stupidity.
*
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? :-) icon_rolleyes.gif

ianho
post Sep 19 2006, 10:57 PM

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ryansxs
post Sep 19 2006, 11:08 PM

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QUOTE(| e 3 h y 0 r | @ Sep 18 2006, 11:11 PM)
Does UV Light harm you? icon_question.gif
*
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. smile.gif
(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. icon_rolleyes.gif
yamato
post Sep 19 2006, 11:12 PM

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color l () f (*1014 Hz) Energy (*10-19 J)
violet 4000 to 4600 7.5 to 6.5 5.0 to 4.3
indigo 4600 to 4750 6.5 to 6.3 4.3 to 4.2
blue 4750 to 4900 6.3 to 6.1 4.2 to 4.1
green 4900 to 5650 6.1 to 5.3 4.1 to 3.5
yellow 5650 to 5750 5.3 to 5.2 3.5 to 3.45
orange 5750 to 6000 5.2 to 5.0 3.45 to 3.3
red 6000 to 8000 5.0 to 3.7 3.3 to 2.5

ultra violet carries the most energy among the 7 colours in the natural light.
means UV harm most. not sure bout the one in ur rig..heh


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This post has been edited by yamato: Sep 19 2006, 11:29 PM
vintec
post Sep 19 2006, 11:28 PM

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QUOTE(Acey @ Sep 19 2006, 10:43 PM)
This is a good example of ppl who dont deserve to be in forums.  First of all, I do lash out at mods sometimes (you're human im human, so what).  THIS is a forum, people ASKED something to get some ANSWERS, they might not be as HIGH TECH as you are (or may I call it "nerdy") to know there's a wikipedia or another search engine besides Yahoo's.
*
totally agree. i'm one of the victims of those mod wanabes too. not spamming here but i'm just showing my support to threadstarter that her post is meaningful.
ryansxs
post Sep 19 2006, 11:29 PM

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QUOTE(yamato @ Sep 19 2006, 11:12 PM)
color l () f (*1014 Hz) Energy (*10-19 J)
violet 4000 to 4600 7.5 to 6.5 5.0 to 4.3
indigo 4600 to 4750 6.5 to 6.3 4.3 to 4.2
blue 4750 to 4900 6.3 to 6.1 4.2 to 4.1
green 4900 to 5650 6.1 to 5.3 4.1 to 3.5
yellow 5650 to 5750 5.3 to 5.2 3.5 to 3.45
orange 5750 to 6000 5.2 to 5.0 3.45 to 3.3
red 6000 to 8000 5.0 to 3.7 3.3 to 2.5

ultra violet carries the most energy in the 7 colours in the natural light.
means UV harm most. not sure bout the one in ur rig..heh
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)

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This post has been edited by ryansxs: Sep 19 2006, 11:38 PM
LWRNCH6550
post Sep 19 2006, 11:35 PM

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uhhh~~after reading another few post of scientific explaination , im starting to understand how the threadstarter feels .
yamato
post Sep 19 2006, 11:45 PM

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QUOTE(ryansxs @ Sep 19 2006, 11:29 PM)
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)
*
brother, we are becoming off topic again here. dont make the mod warn twice.
» Click to show Spoiler - click again to hide... «



back to the subject:
IMHO, any kind of light do harm to human, but only in different level.
if our body recovery rate is greater than the aging rate done by the light, than it wont be a concern. thumbup.gif

HTH

This post has been edited by yamato: Sep 20 2006, 12:03 AM
ryansxs
post Sep 20 2006, 12:06 AM

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QUOTE(yamato @ Sep 19 2006, 11:45 PM)
brother, we are coming off topic again here.
UV is is between indigo-to-transparent, barely visible by naked eyes, natural light/ sun light does consist UV.
*
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
yamato
post Sep 20 2006, 12:49 AM

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ahh...ryan, i dont have the intension of arguing about anything, i just wanna share my point of view to TS and other members.

it seems like you are criticizing most of my posts in this thread. and i would like apologize if im the one who make you feel that way.

microwave or macromave, visible or not visible spectrum is not related to this thread. anyway the subject is:
Does UV Light harm you?, the one they use for PC decoration.

and i would just stress my opinion for once more which i already did in previous post.
"any kind of light do harm to human, but only in different level.
if our body recovery rate is greater than the aging rate done by the light, than it wont be a concern. thumbup.gif "

cheers





ryansxs
post Sep 20 2006, 01:08 AM

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QUOTE(yamato @ Sep 20 2006, 12:49 AM)
ahh...ryan, i dont have the intension of arguing about anything, i just wanna share my point of view to TS and other members.

it seems like you are criticizing most of my posts in this thread. and i would like apologize if im the one who make you feel that way.

microwave or macromave, visible or not visible spectrum is not related to this thread. anyway the subject is:
Does UV Light harm you?, the one they use for PC decoration.

and i would just stress my opinion for once more which i already did in previous post.
"any kind of light do harm to human, but only in different level.
if our body recovery rate is greater than the aging rate done by the light, than it wont be a concern.  thumbup.gif "

cheers
*
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! smile.gif
Anyway, i guess we had made our points clear here. thumbup.gif I hope, we had shared some good information with others. wink.gif

Cheers to you mate! icon_rolleyes.gif


Vampyr3
post Sep 20 2006, 01:19 AM

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^not only ts, other thread readers too......like me for example laugh.gif
TSe 3 h y 0 r
post Sep 20 2006, 10:23 AM

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QUOTE(Acey @ Sep 19 2006, 05:36 PM)
Yessuh, the UV lights will harmxor your skin.  First your skin will feel itchy and hot.  Then after sometimes near ur CPU for like a few months, your skin will start rotting from the inside.  When your skin peel off, you'll see maggots in ur arms and ur bones with crack lines.  After that you'll need to amputate your arm.  The horror... the horror...
*
Ouch* sweat.gif

QUOTE(LWRNCH6550 @ Sep 19 2006, 08:15 PM)
you sound like ur in big trouble . Someone around u just got skin cancer or what ?
no offence .

copied from another forum
*
Thank you so much, it clears my mind now. I'm not in big trouble nor my friends are in big trouble. I just want to clear my mind before i get into BIGGER TROUBLE. I like the UV lights to be on my ride (im so into UV after i installed it), hence would like to know if i exposed to it every night when i drive would harm my health. Gomenesai again @@ rclxms.gif

QUOTE(Acey @ Sep 19 2006, 08:43 PM)
This is a good example of ppl who dont deserve to be in forums.  First of all, I do lash out at mods sometimes (you're human im human, so what).  THIS is a forum, people ASKED something to get some ANSWERS, they might not be as HIGH TECH as you are (or may I call it "nerdy") to know there's a wikipedia or another search engine besides Yahoo's.

@Threadstarter:  The UV CCFL is black light, not like the true UV from the sun, so its harmless.  Besides its inside the case and most of the time people put the case on the floor next to the table or on the table where the biggest part that's flashed by the black light is your pinky.
*
Yeahooo, thats one of the main reason i love lowyat forum with people like you guys to share thoughts and suggestions. The forum will last forever if there are informative threads like this. Btw, mine isnt in the case, is on room light of my car. rclxm9.gif

QUOTE(ryansxs @ Sep 19 2006, 11:08 PM)
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. smile.gif
(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.  icon_rolleyes.gif
*
Below link is the UV CCFL i installed in my ride. How do i know which is a) b) c) or d) ?
http://www.sunbeamtech.com/PRODUCTS/CCFL.HTML

QUOTE(vintec @ Sep 19 2006, 11:28 PM)
totally agree. i'm one of the victims of those mod wanabes too. not spamming here but i'm just showing my support to threadstarter that her post is meaningful.
*
notworthy.gif thank you ...

QUOTE(ryansxs @ Sep 20 2006, 01:08 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!  smile.gif
Anyway, i guess we had made our points clear here.  thumbup.gif  I hope, we had shared some good information with others.  wink.gif

Cheers to you mate!  icon_rolleyes.gif
*
Nope, i appreciate every concrete replies, thank you again thumbup.gif


Am i correct to safely say that the UV CCFL that i install in my ride is safe to switch it on at night while i drive? sweat.gif

eBola
post Sep 20 2006, 01:32 PM

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QUOTE(| e 3 h y 0 r | @ Sep 20 2006, 10:23 AM)

Am i correct to safely say that the UV CCFL that i install in my ride is safe to switch it on at night while i drive? sweat.gif
*
with many goods nowadays being made cheaply with little to no regard to QC, its hard to gvie u a definitive answer, short of getting the UV emissions analysed.

suffice to say, exercise moderation. if in doubt, dont use for too long if directly exposed. bestter safe than sorry, you dont want to end up realising 10 years down the road that all the UV rays u loved so much end up causing something.
kidmad
post Sep 21 2006, 05:42 PM

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im using them around a year, and i havun die yet. good enuff kua da answer. it wun harm u dat badly i guess, else they wudnt be selling them.

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