LCD Monitors give off NO radiation?!

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gnuel3

Senior member
Oct 19, 2002
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Is it true? Absolutely none at all? :D

Cuz I quite a bit of time on the pc and my eyes are getting bad. :(

Also, how much radiation do flat screen crts give off?
 
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FishTankX

Platinum Member
Oct 6, 2001
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Eh, well, i'll say this. Everything gives off radation. Speakers, computers, TV's, radios, even rocks!

It's much much smaller than a CRT. The radation that is. You could safely work infront of an LCD for like, forever and not get any harmful radation from them. If radation is your concern, an LCD is probably infinitley better than a CRT.
 
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gnuel3

Senior member
Oct 19, 2002
506
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Ah, I see. Thanks. :D Looks like its time for me to get a LCD. :D

Flat screen crts give the same radiation as non flats?! :-o What are the advantages of a flat screen then? Wow, I always though they gave less radiation, heh.
 
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tapir

Senior member
Nov 21, 2001
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The advantage of a flat screen is that it looks better: less glare on the screen, clearer images and such. The technology of the cathode ray tube and such is all the same, its just the use of an aperture grill or flat tube to make the picture nicer.
 
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Bovinicus

Diamond Member
Aug 8, 2001
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CRTs don't emit that much radiation that I would be worried. Of course, with the cancer rate so high now, I can see how you get a little concerned. LCDs are good for either reasons though, so it's not necessarily a bad idea to go with one. Just make sure the radiation isn't the only reason.
 
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Antoneo

Diamond Member
May 25, 2001
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Originally posted by: JKing76
Worrying about the radiation from any modern monitor is quite silly.
Click to expand...
I agree, there are other sources of "radiation" that we are constantly exposed to everyday but wouldnt even give a second thought about it. In my opinion its more of a marketing gimmick, one of those features++ type of thing when it doesnt really matter. Eyes getting bad or sore from long computer use is usually because of eyestrain because of the lack of clarity/ focus, low refresh rates, or even brightness or glare.

LCDs, as mentioned in the post above mine, will give off radiation. There is still controversy as to whether or not any harm is being produced by being exposed to this "radiation" but if you believe in that stuff, if the monitor don't kill you the power lines going to your house will then ;) It will be much less than those produced by CRTs but I wouldn't use that as the main reason for getting one ;).
 
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FishTankX

Platinum Member
Oct 6, 2001
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BTW, LCD's are much easier on your eyes, possibly because they dont' scan. It may just be me, but it seems to me as if eyes have to work pretty hard to reasemble the progressive scanning of the CRT into a complete image. While LCD's just reproduce the whole image in one fell swoop.
 
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gnuel3

Senior member
Oct 19, 2002
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Wow, thanks for the responses, heh. Actually, I was thinking radiation like radiation to the eyes, not like cell phone radiation that effects your brain and stuff like that. Cuz my eyes are like 400 degress right now and I don't want it to get any worse..
 
jamesbond007

jamesbond007

Diamond Member
Dec 21, 2000
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Tell you what. I had a few CRTs in my days...my eyes have gotten real bad these past couple years. I recently bought a LCD and I couldn't be happier. It plays all my games very well, I use the DVI port for best quality, and if you ask me, your eyes are always worth it. I use a Samsung 191T and I wouldn't trade this thing for the world!

Best INVESTMENT I ever purchased.

Good luck!
 
Jeff7

Jeff7

Lifer
Jan 4, 2001
41,596
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Originally posted by: gnuel3
Wow, thanks for the responses, heh. Actually, I was thinking radiation like radiation to the eyes, not like cell phone radiation that effects your brain and stuff like that. Cuz my eyes are like 400 degress right now and I don't want it to get any worse..
Click to expand...

Could just be a bad refresh rate. If I look at a monitor with a 60Hz refresh rate (which most PC's are set to by default it seems) for more than a few minutes, it's headache time. For me, it's 85Hz or better always.
What're you using as your current monitor and videocard?

As for the radiation thing - step outside, and you'll get hit by more radiation than a monitor will produce.;)
 
arcenite

arcenite

Lifer
Dec 9, 2001
10,660
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Radiation is something i've always worried about from CRT monitors. I just don't have the money to upgrade to a Good LCD :-(
 
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Derango

Diamond Member
Jan 1, 2002
3,113
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Radiation to the eyes isn't really a problem...Its the fact that when you use a computer, you're focusing on an object thats always a few feet away from you....so your eyes get a little lazy and end up not being able to focus on objects that are further away

Thats a more pressing issue than radiation in my book :)
 
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kgraeme

Diamond Member
Sep 5, 2000
3,536
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The type of monitor has nothing to do with your eyes burning. The burning sensation is simply because they are dry and sore. You are working your eyes considerably by just looking at the monitor, and when we look at a monitor we blink less. It would be like going to the gym and working out for eight hours, drinking little to no water, going home and falling asleep without stretching then getting up in the morning and doing it all over again. On top of that, you probably watch TV which does much the same thing. So now you work out, come home, work out some more, then go to sleep.

The "working out" is not an exaggeration either. It may seem like you're not doing much, you're just looking at the one monitor at the same distance all the time. But think how much your arms would hurt if you had to do nothing more than hold them outstretched and immobile for eight hours. I'll bet you can't even do it for five minutes. When we get up and look around, we let our eyes focus on different things at different distances. We in effect are stretching them after a workout. And blinking them gives them a drink of Gatorade.

 
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Gosharkss

Senior member
Nov 10, 2000
956
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All electronic equipment radiates RFI. Amounts vary by make and model. Simply passing an electric current through a wire will create some small amount of RFI.

In terms of radiated emissions, LCDs are cleaner in terms of low-frequency electric and magnetic fields. (I am not aware of any studies, which have firmly established a link between these fields and health problems).

If you are concerned you should read This link


In terms of radiated emissions, LCDs are cleaner in terms of low-frequency electric and magnetic fields. (I am not aware of any studies, which have firmly established a link between these fields and health problems).

LCDs may, in some cases, are worse than a CRT monitor for radiated high-frequency noise (RFI). In the monitor industry we are required to measure RFI and products typically fall into two categories, FCC Class A and FCC Class B. A is intended for commercial use (B) the stricter standard for home uses. In fact some airlines are now restricting or eliminating the use of notebook computers during flight out of fear that they will interfere with navigational equipment.

I've measured some LCD?s on the test range that were well above the FCC required levels even higher than many CRT products I have tested. Many things can cause RFI, poor termination the video cabling, poor shielding the internal logic including the drivers for the panel itself.
 
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kgraeme

Diamond Member
Sep 5, 2000
3,536
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Gosharkss, I always love your posts about monitors. Great stuff!

So from your post it sounds like the FCC doesn't require RFI testing of LCDs? I thought that RFI was part of the required testing for any electronic device to be able to pass Class B cert for consumer market sale.
 
Eug

Eug

Lifer
Mar 11, 2000
24,154
1,803
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Hmmm.... People always seem to be worried about the health risks of CRT and cell phone radiation.

Some of these same people regularly eat greasy bacon double cheeseburgers with supersized fries and coke.

When it comes to your health, I agree one must be vigilant, but there are better things to worry about than CRT/LCD radiation. :p
 
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Gosharkss

Senior member
Nov 10, 2000
956
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Originally posted by: kgraeme
Gosharkss, I always love your posts about monitors. Great stuff!

So from your post it sounds like the FCC doesn't require RFI testing of LCDs? I thought that RFI was part of the required testing for any electronic device to be able to pass Class B cert for consumer market sale.
Click to expand...

Sorry if I confused you. Yes LCD's must pass FCC class B for home use. My point was that some LCD's even though they pass the requirement are louder than some CRT's I have tested.

 
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buleyb

Golden Member
Aug 12, 2002
1,301
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Is there a LCD version of the sun? Because that would be great, you know, if it didn't affect you when you go outside...

:)

:)
 
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