laptop radiation

oceangirl10

macrumors member
Original poster
Aug 14, 2016
87
8
I've been wondering about radiation emitted from a laptop and if this is a concern. I can feel it and purchased a protector for under the laptop, but now wonder if it doesn't get deflected up into my hands now etc.
 
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JustinRP37

macrumors regular
Jun 14, 2016
202
340
New York, NY
I've been wondering about radiation emitted from a laptop and if this is a concern. I can feel it and purchased a protector for under the laptop, but now wonder if it doesn't get deflected up into my hands now etc.
There is no way you can feel it. The 'radiation' these put off is non-ionizing and cannot damage tissue. What you might be feeling is the electric current from an ungrounded plug. Many users have reported a tingly feeling when using the laptop with just the power adapter plugged in without the grounded plug. Try both and see what happens.
 

oceangirl10

macrumors member
Original poster
Aug 14, 2016
87
8
There is no way you can feel it. The 'radiation' these put off is non-ionizing and cannot damage tissue. What you might be feeling is the electric current from an ungrounded plug. Many users have reported a tingly feeling when using the laptop with just the power adapter plugged in without the grounded plug. Try both and see what happens.
I have the 3 pronged plug from the laptop going into a power bar, and the 3 pronged power bar plugged into the wall. Am I using the grounded plug?
Also, could you comment on these articles in terms of differing opinions on the harmfulness of the radiation, if there is any. https://www.ncbi.nlm.nih.gov/pubmed/22315933 and https://www.electricsense.com/1138/my-9-tips-to-cut-down-on-exposure-to-computer-radiation/
 

Absrnd

macrumors 6502a
Apr 15, 2010
584
777
Flatland
I have the 3 pronged plug from the laptop going into a power bar, and the 3 pronged power bar plugged into the wall. Am I using the grounded plug?
Also, could you comment on these articles in terms of differing opinions on the harmfulness of the radiation, if there is any. https://www.ncbi.nlm.nih.gov/pubmed/22315933 and https://www.electricsense.com/1138/my-9-tips-to-cut-down-on-exposure-to-computer-radiation/
Wow, now this :(
you had the articles ready to post didn't ya

Alright I'll bite, why not turn of you laptop ?
 
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Absrnd

macrumors 6502a
Apr 15, 2010
584
777
Flatland
You know that if you live in a regular home, you would have to wear this:



everything electric emits a certain amount of radiation,
you must move into the country with just cows,and I am truly sorry you won't be able to post on this, or any other forum any more, I wish you well.
 

PROFESS0R

macrumors 6502
Jul 30, 2017
343
320
Speaking as an electrical engineer, anything that has a current flowing has an EMF; the larger the current, the larger the EMF. If you do not want to be exposed to EMF, you should walk around in a Faraday cage dragging a ground wire. The magnetic fields induced from a laptop computer are generally mitigated by appropriate grounding. If you want to be concerned about EMF, focus your attention on electric motors and power lines.
 

StellarVixen

macrumors 68020
Mar 1, 2018
2,280
3,761
Earth
Nothing that a tinfoil hat can't stop.

I've been using my MBP for 6 consecutive years, while wearing one, and look at me, nothing! I am totally healthy and protected from dangerous radiation that turns people into mutants.

Tinfoil hat is a life saving device.
 

SDColorado

macrumors 601
Nov 6, 2011
4,348
4,315
Highlands Ranch, CO
If I was that worried about the radiation being emitted from my laptop, I probably would also not risk the exposure by using the said laptop to research the risks of radiation from it or use it to post the question. That would be a little too risky and could shorten my lifespan by many seconds :)
 
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JustinRP37

macrumors regular
Jun 14, 2016
202
340
New York, NY
I have the 3 pronged plug from the laptop going into a power bar, and the 3 pronged power bar plugged into the wall. Am I using the grounded plug?
Also, could you comment on these articles in terms of differing opinions on the harmfulness of the radiation, if there is any. https://www.ncbi.nlm.nih.gov/pubmed/22315933 and https://www.electricsense.com/1138/my-9-tips-to-cut-down-on-exposure-to-computer-radiation/
The first article is a peer review scientific article. As a scientist with a PhD, it is a good article but it is merely saying the same thing people should know, and that is do not use a 'laptop' on your lap. But even if you do, it really is not that harmful. If you are pregnant, then yes take more precautions. The article is merely stating that perhaps people should rename 'laptops' to something else, and by-in-large the market has moved away from the term 'laptop' in favor of 'notebook'.

The second article is 'clickbait'. Most of the claims are dubious, if not downright false. Sorry, a salt lamp and a house plant just are not going to make using a computer 'healthier'. Besides, most people carry a cellphone that is actively communicating with a cell tower at all time, and most carry them in their front pockets right by their genitals. So far, humans are doing quite all right at reproducing during the smartphone era.

Do what you can to prevent cancer, by all means, but the best way to reduce the risk is to exercise, eat healthy food, avoid too much sugar, don't smoke, don't drink excessively; and the biggest preventive measure is to live in an area with clean water and clean air.
 

trifid

macrumors 68000
May 10, 2011
1,856
4,531
Not completely related but I think it's relevant to harmful things many of us are not aware of, I recently found out about a disturbing discovery regarding blue light emitted from screens:

"Results of new research from the University of Toledo now point to a specific way in which blue light emitted from electronic devices has the potential to lead to macular degeneration, a major cause of vision loss throughout the U.S.

Macular degeneration results from the death of specialized photoreceptor cells in the retina, so critical for our vision.

“It’s no secret that blue light harms our vision by damaging the eye’s retina,” said Ajith Karunarathne, PhD, Assistant Professor, Department of Chemistry and Biochemistry, University of Toledo in a news release.

Photoreceptor cells are vital to our vision by capturing visual images in our world, and transmitting them to our brain via a compound known as retinal.

Retinal is produced by our eyes, and is provoked by blue light which leads to a number of chemical reactions. But it turns out that some of these reactions lead to toxic radicals which can permanently damage these photoreceptor cells, leading to cell death. One they are gone, they cannot regenerate."

https://www.forbes.com/sites/robert...smartphone-harmful-to-your-eyes/#638b5275c753
 
Jul 4, 2015
4,488
2,548
Paris
I have the 3 pronged plug from the laptop going into a power bar, and the 3 pronged power bar plugged into the wall. Am I using the grounded plug?
Also, could you comment on these articles in terms of differing opinions on the harmfulness of the radiation, if there is any. https://www.ncbi.nlm.nih.gov/pubmed/22315933 and https://www.electricsense.com/1138/my-9-tips-to-cut-down-on-exposure-to-computer-radiation/
OMG that second link.

Stay away from health cranks for your mental health’s sake. They put all kinds of fear into people just to get clickbait or sell stupid products.

Your computer, phone, WiFi or microwave have no effect on your health. Except for your eyes if you strain at a screen all day.
 
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oceangirl10

macrumors member
Original poster
Aug 14, 2016
87
8
You know that if you live in a regular home, you would have to wear this:



everything electric emits a certain amount of radiation,
you must move into the country with just cows,and I am truly sorry you won't be able to post on this, or any other forum any more, I wish you well.
You should not be replying to posts.
[doublepost=1542588144][/doublepost]
You know that if you live in a regular home, you would have to wear this:



everything electric emits a certain amount of radiation,
you must move into the country with just cows,and I am truly sorry you won't be able to post on this, or any other forum any more, I wish you well.
You should not be replying to posts.
Wow, now this :(
you had the articles ready to post didn't ya

Alright I'll bite, why not turn of you laptop ?
You should not be replying to posts on here.
[doublepost=1542588200][/doublepost]
OMG that second link.

Stay away from health cranks for your mental health’s sake. They put all kinds of fear into people just to get clickbait or sell stupid products.

Your computer, phone, WiFi or microwave have no effect on your health. Except for your eyes if you strain at a screen all day.
Thank you. I will return the shield I purchased for $100.
[doublepost=1542588286][/doublepost]
Not completely related but I think it's relevant to harmful things many of us are not aware of, I recently found out about a disturbing discovery regarding blue light emitted from screens:

"Results of new research from the University of Toledo now point to a specific way in which blue light emitted from electronic devices has the potential to lead to macular degeneration, a major cause of vision loss throughout the U.S.

Macular degeneration results from the death of specialized photoreceptor cells in the retina, so critical for our vision.

“It’s no secret that blue light harms our vision by damaging the eye’s retina,” said Ajith Karunarathne, PhD, Assistant Professor, Department of Chemistry and Biochemistry, University of Toledo in a news release.

Photoreceptor cells are vital to our vision by capturing visual images in our world, and transmitting them to our brain via a compound known as retinal.

Retinal is produced by our eyes, and is provoked by blue light which leads to a number of chemical reactions. But it turns out that some of these reactions lead to toxic radicals which can permanently damage these photoreceptor cells, leading to cell death. One they are gone, they cannot regenerate."

https://www.forbes.com/sites/robert...smartphone-harmful-to-your-eyes/#638b5275c753
I purchased glasses for this awhile ago and noticed a huge difference in my eye health.
[doublepost=1542588479][/doublepost]
The first article is a peer review scientific article. As a scientist with a PhD, it is a good article but it is merely saying the same thing people should know, and that is do not use a 'laptop' on your lap. But even if you do, it really is not that harmful. If you are pregnant, then yes take more precautions. The article is merely stating that perhaps people should rename 'laptops' to something else, and by-in-large the market has moved away from the term 'laptop' in favor of 'notebook'.

The second article is 'clickbait'. Most of the claims are dubious, if not downright false. Sorry, a salt lamp and a house plant just are not going to make using a computer 'healthier'. Besides, most people carry a cellphone that is actively communicating with a cell tower at all time, and most carry them in their front pockets right by their genitals. So far, humans are doing quite all right at reproducing during the smartphone era.

Do what you can to prevent cancer, by all means, but the best way to reduce the risk is to exercise, eat healthy food, avoid too much sugar, don't smoke, don't drink excessively; and the biggest preventive measure is to live in an area with clean water and clean air.
What is the danger, even though minimal, of a laptop being on a lap? also, I just purchased a laptop shield for $100 on amazon. One reviewer measured radiation before and after the use of the shield and there was a huge difference. Other than saying he was probably from the store selling them, if it were true, what would it mean? I might return this laptop shield. Thank you.
[doublepost=1542588586][/doublepost]
I'll bite: Oceangirl, how are you 'feeling radiation'?
Whatever it is, I feel a sensation on my legs that gets stronger the longer I have the laptop there, and it does not feel like heat. I thought it felt like what radiation might feel like, but I have no idea. I can feel it a bit on my hands on the top as well. I am a bit sensitive to environmental things at times, though.
[doublepost=1542588701][/doublepost]
Speaking as an electrical engineer, anything that has a current flowing has an EMF; the larger the current, the larger the EMF. If you do not want to be exposed to EMF, you should walk around in a Faraday cage dragging a ground wire. The magnetic fields induced from a laptop computer are generally mitigated by appropriate grounding. If you want to be concerned about EMF, focus your attention on electric motors and power lines.
I thought I knew this, but just to be sure - if I have a three pronged cord from my laptop to a 3 pronged outlet on a power bar, which is plugged in with three prongs to a wall outlet, is this all properly grounded?
 

tamara6

macrumors regular
Apr 28, 2004
168
38
The thing is that you can't feel "radiation" that way.

There are two types of things that people mean when they say "radiation." One is electromagnetic radiation. This is a very large family of essentially the same type of thing, with varying energies. Radio waves, infrared light, visible light, ultra violet light, x-rays, and gamma rays are all forms of electromagnetic radiation. Of these, some ultra violet light, all x-rays, and all gamma rays have enough energy to cause damage to your cells. But most people do not feel this damage at the time it is happening (think sunburn - you can go out on a cloudy day and get sunburned and not notice until much later, after you are inside and away from the sun). If you don't typically feel a tingly feeling when you are in the sun or getting a dental x-ray, then anything of this sort that may come from your computer (which would not be nearly as energetic) would not be felt, either.

The other type of "radiation" is radioactive radiation - primarily alpha particles and beta particles. Again, unless you are in an extreme situation (think Hiroshima) you would not feel this radiation. Back in the 1920s/30s/40s it was not uncommon for radioactive products to be sold to the public (who did not realize their dangers). But regulations are much tighter now, and there is essentially no way that your computer would be exposing you to this type of radiation - it would not be allowed by law.

I can think of two things that you might be feeling - one is if your computer is not plugged in to a grounded outlet. Most 3 pronged outlets are grounded, or they are supposed to be. But the wiring in your building may be such that the third prong is simply not connected to ground. You can check this, though, by using your computer on battery power only. If you still feel a tingling, then this is not the problem. If you only feel the tingling when your computer is plugged in, then this is your problem and you should consult someone (like an electrician) to see about your wiring.

Another possibility is that there is something that is vibrating inside your computer that you are able to feel - a fan running on low, that you can't hear but there is still a small vibration, or something similar. You can check to see if this is "normal" for your computer model by finding someone with a similar one and checking to see if it feels the same way. It is possible that there is a mechanical issue with your computer.

The bottom line is that radiation from your computer is probably not the source of your tingly feelings.
 

Painter2002

macrumors 65816
May 9, 2017
1,088
772
Austin, TX
So I’m don’t want to go much into this other than to say this... EMFs are a thing, but they are emitted from every single device you use in a greater or lesser degree. Your phone, stovetop, electric heater, tv, stereo, heck even you laptop’s power brick, all release greater or lesser amounts of EMFs. To say that a laptop is a concern anymore than those other everyday items would be useless, especially considering the fact that normally day to day life in today’s society’s is going to expose you to so much more EMFs than you using your laptop. Also, no case (except maybe one made out of lead??) is going to stop EMFs from going through the bottom of your laptop to you legs.

In the end, I think it is better to focus on controlling things that you can control more, such as eating healthy organic foods with antioxidants that help prevent cancers, or living a healthy lifestyle that involves exercise, rather than worrying about stuff that you really can’t change or avoid. The only way to truly avoid the hazards of the modern electronic age would be to live off the grid, which means no job, limited to no electricity, and little to no way to communicate to the outside world. Sounds like an awfully lonely way to live if you ask me.

In summary, try to enjoy life a little more, and worry a bit less.
 

oceangirl10

macrumors member
Original poster
Aug 14, 2016
87
8
Thanks all. There are so many articles about the dangers of the radiation
The thing is that you can't feel "radiation" that way.

There are two types of things that people mean when they say "radiation." One is electromagnetic radiation. This is a very large family of essentially the same type of thing, with varying energies. Radio waves, infrared light, visible light, ultra violet light, x-rays, and gamma rays are all forms of electromagnetic radiation. Of these, some ultra violet light, all x-rays, and all gamma rays have enough energy to cause damage to your cells. But most people do not feel this damage at the time it is happening (think sunburn - you can go out on a cloudy day and get sunburned and not notice until much later, after you are inside and away from the sun). If you don't typically feel a tingly feeling when you are in the sun or getting a dental x-ray, then anything of this sort that may come from your computer (which would not be nearly as energetic) would not be felt, either.

The other type of "radiation" is radioactive radiation - primarily alpha particles and beta particles. Again, unless you are in an extreme situation (think Hiroshima) you would not feel this radiation. Back in the 1920s/30s/40s it was not uncommon for radioactive products to be sold to the public (who did not realize their dangers). But regulations are much tighter now, and there is essentially no way that your computer would be exposing you to this type of radiation - it would not be allowed by law.

I can think of two things that you might be feeling - one is if your computer is not plugged in to a grounded outlet. Most 3 pronged outlets are grounded, or they are supposed to be. But the wiring in your building may be such that the third prong is simply not connected to ground. You can check this, though, by using your computer on battery power only. If you still feel a tingling, then this is not the problem. If you only feel the tingling when your computer is plugged in, then this is your problem and you should consult someone (like an electrician) to see about your wiring.

Another possibility is that there is something that is vibrating inside your computer that you are able to feel - a fan running on low, that you can't hear but there is still a small vibration, or something similar. You can check to see if this is "normal" for your computer model by finding someone with a similar one and checking to see if it feels the same way. It is possible that there is a mechanical issue with your computer.

The bottom line is that radiation from your computer is probably not the source of your tingly feelings.
Thanks for the info. When I said "so many articles about the dangers of radiation" I meant specifically EMF from laptops - I guess this is fake information.
Just to clarify, are you saying that the electromagnetic radiation emitted from a laptop is not something that can be damaging and that the only EMR that can be are some ultra violet light, all x-rays, and all gamma rays, which obviously are not emitted from a computer?

I purchased the attached item.
Was it a complete waste of money? I can return it.
 

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HDFan

macrumors 68020
Jun 30, 2007
2,395
664
I've been wondering about radiation emitted from a laptop and if this is a concern. I can feel it and purchased a protector for under the laptop, but now wonder if it doesn't get deflected up into my hands now etc.
There are hypersensitive people who can feel EMF. I have met and talked with many of them. Do you do get symptoms, such as migraines? As long as you don't get any symptoms I wouldn't worry about it.
 

tamara6

macrumors regular
Apr 28, 2004
168
38
My goal was to try to convince you that the tingling that you feel is most likely not from any sort of "radiation" from your computer. I think you should look into other sources for that.

You have purchased the shield. Does it work? Do you still feel the tingling? If yes, then return the shield, because it is not solving your problem. If you do not continue to feel tingling then keep the shield.

As for any actual harm that may come to you from using your computer - I don't think anyone can answer that. The article that you link to does not speak about direct absorption of radiation directly from the computer, but rather currents that may be induced in the body. I believe that there is no scientific consensus on what these effects may be (if there are any at all). What I can tell you is that only UV, X-rays, and gamma rays can cause the destruction of cells of the body due to direct absorption, and your computer does not put out substantial radiation at any of these frequencies.

I think you should be more concerned with what is causing your tingling, because that could actually be a health hazard (if, for instance, it turns out your house wiring is faulty). I, personally, do not worry about the health risks to my legs/lap due to electromagnetic radiation from my laptop. I do suspect that there is a danger from holding a very hot laptop on your lap - from the heat. But that is a separate issue, and not what you are asking about here.
 
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oceangirl10

macrumors member
Original poster
Aug 14, 2016
87
8
Just curious about which one you got, I'm researching and having trouble deciding on one due to so many options.
I got these. They seem to work great. My eyes don't bother me anymore when I work on the computer. They are a bit plasticky, but you could also call that flexible. I got them with a small prescription as well.
[doublepost=1542608716][/doublepost]
I got these. They seem to work great. My eyes don't bother me anymore when I work on the computer. They are a bit plasticky, but you could also call that flexible. I got them with a small prescription as well.
It looks like the lens comes in different colours. Mine look the same colour as the large picture, although they are not tinted that dark. The point is the blue light they filter.
 

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Absrnd

macrumors 6502a
Apr 15, 2010
584
777
Flatland
Whatever it is, I feel a sensation on my legs that gets stronger the longer I have the laptop there, and it does not feel like heat. I thought it felt like what radiation might feel like, but I have no idea. I can feel it a bit on my hands on the top as well. I am a bit sensitive to environmental things at times, though.
That "sensation" in your legs is called muscle tension...because you have a laptop on your...lap
instead of thinking you "feel" radiation, they are just bodily functions, like sensitivity from blue glare from screens, it is not irradiating you, it is just bright light in a color you don't like, adjust you screen color and brightness.

If you want to do real research into that topic, try to read up on the amount of electric/magnetic radiation you get, when you watch lightning through your home window, than report back :)

You seem to forget that the whole world is constantly bombarded with radiation, just from nature itself, and from space,
and you need that radiation, not everything you don't understand is bad for you o_O
 

doitdada

Suspended
Oct 14, 2013
946
557
Wi-fi and cellular radiation have been linked with cancer of the heart and brain, but that is only in small rodents, and no research or statistics show that this is the case for humans. The amount of radiation in these papers are extreme compared to the actual cases with wi-fi and phone usage.

I guess some people are more afraid of words rather than the amount of exposure.
 

oceangirl10

macrumors member
Original poster
Aug 14, 2016
87
8
That "sensation" in your legs is called muscle tension...because you have a laptop on your...lap
instead of thinking you "feel" radiation, they are just bodily functions, like sensitivity from blue glare from screens, it is not irradiating you, it is just bright light in a color you don't like, adjust you screen color and brightness.

If you want to do real research into that topic, try to read up on the amount of electric/magnetic radiation you get, when you watch lightning through your home window, than report back :)

You seem to forget that the whole world is constantly bombarded with radiation, just from nature itself, and from space,
and you need that radiation, not everything you don't understand is bad for you o_O
There seems to be a misunderstanding in a few posts that I think I'm being irradiated etc. I asked a simple question as to whether EMF from a laptop can be harmful. Also, I see a difference between watching lightning and having a gadget with EMF sitting right on top of you. Even apparent experts in these posts have said a laptop should not be called a laptop - Why is that? It is true that the experts unanimously say that there is no harm from EMF in a laptop. However, online, the articles saying there is harm far outnumber those that say there is, and there are hundreds of articles. If there truly is no harm at all, it really indicates the amount of misinformation out there about anything.
 

tamara6

macrumors regular
Apr 28, 2004
168
38
Sure - look up astrology - there are lots of articles out there about how the position of the stars on the day that you were born somehow influences the person that you are today. Just because there are a lot of articles on the internet about anything doesn't make it true.

Perhaps a place to start is on wikipedia - they tend to have more useful/less bogus information than just random web pages.
 
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