EEVblog Electronics Community Forum
General => General Technical Chat => Topic started by: ZeTeX on September 04, 2016, 05:31:22 pm
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Is it dangerous to charge your phone next to you in bed? can electromagnetic radiation from the charger itself can be bad for you? can radiation from your phone be bad for you?
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Is it dangerous to charge your phone next to you in bed? can electromagnetic radiation from the charger itself can be bad for you? can radiation from your phone be bad for you?
I'm not sure if you are kidding or not, but in the event not.
Chargers do not emit any harmful radiation or particulate that can harm you. You could sit next to one for 30 years non stop and have no real issues.
Phones do not emit any harmful radiation or particulate that can harm you. You could sit next to one for 30 years non stop and have no real issues.
Anyone who says otherwise is making shit up.
You can charge and use your phone next to your bed, at the kitchen table, in the living room, and anywhere else you want. The charging current coming out of the wire (not the wall) isn't even enough to
be sensed, and can't harm you either. Radiation from phones isn't a thing as there are no elements inside your phone that can produce that radiation and to my knowledge we can not produce ionizing radiation artificially without the use of any radioactive isotopes. Don't listen to me I have no clue what I am talking about. The rest is true.
So you are fine, do not worry at all about your phone.
EDIT:
So from the rest of the people here I have learned EM radiation is not limited to radio frequencies, and that through the right wavelengths and energy, they can be harmful.
2.4 Ghz or anything else your phone receives or picks up will never cause you any harm whatsoever.
Like any electrical competent, power surges can cause issues, but this would be the same concern for having a lamp in your room. A deskside or ceiling mount lamp could explode too, but it probably won't happen.
Charging a Liion based device is 99% of the time safe. I have charged those batteries as well as NIMH and Sealed Lead Acid (UPS) next to me for YEARS with never a problem. I even have a pre-recall bad battery Nvidia Shield tab (To be replaced soon) and it has never exploded. Of course if you sense hissing, a burning smell, a lot of heat form your phone, or anything of the sort you might want to chuck it
out the window. This is not to scare you. Liion/Lipo failures are RARE and as long as you have a PROPER charger that is charging and PROPER device, there are no worries. So don't go charging you cheap Chinese phone using your cheap Chinese charger next to your bed.
The long held myth that phones emitting EM radiation was probably a pretty cool idea from parents to stop their kids from tapping away at their phones.
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The only significant danger is of it catching fire due to the rare combo of a faulty battery or charger and a faulty protection circuit.
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Is it dangerous to charge your phone next to you in bed? can electromagnetic radiation from the charger itself can be bad for you? can radiation from your phone be bad for you?
I'm not sure if you are kidding or not, but in the event not.
Chargers do not emit any harmful radiation or particulate that can harm you. You could sit next to one for 30 years non stop and have no real issues.
Phones do not emit any harmful radiation or particulate that can harm you. You could sit next to one for 30 years non stop and have no real issues.
Anyone who says otherwise is making shit up.
You can charge and use your phone next to your bed, at the kitchen table, in the living room, and anywhere else you want. The charging current coming out of the wire (not the wall) isn't even enough to
be sensed, and can't harm you either. Radiation from phones isn't a thing as there are no elements inside your phone that can produce that radiation and to my knowledge we can not produce ionizing radiation artificially without the use of any radioactive isotopes.
So you are fine, do not worry at all about your phone.
Thanks, the reason why I created this thread is because today in school my electronic teacher told this bullshit that it is dangerous to charge your phone next to you in bed because of radiation.
I knew this is bullshit instantly because I remember researching this a few years ago but he is electrical engineer and have many more "awards" so I don't want to argue with him.
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Thanks, the reason why I created this thread is because today in school my electronic teacher told this bullshit that it is dangerous to charge your phone next to you in bed because of radiation.
Professor at uni showed us 0805 resistors and told us they cannot be soldered by hand. Smallest I have soldered by hand by this moment is 01005 which is like a piece of dust.
Or when he explained how LCD works, it was full of bullshit as well.
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*ALWAYS* be suspicious of an expert pontificating outside their area of expertise!
Those that can, do
Those that can't, teach
And those that can't teach teach teachers.
For the rational sceptic's view of the 'popular' take on the original issue, see http://www.badscience.net/2007/05/electrosmog-the-independent-has-seriously-excelled-itself-this-time-2/ (http://www.badscience.net/2007/05/electrosmog-the-independent-has-seriously-excelled-itself-this-time-2/)
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to my knowledge we can not produce ionizing radiation artificially without the use of any radioactive isotopes.
We can, xray tubes works without any radioactive isotope.
They employ a stron electric field to accelerate a beam of eletrons which strikes against an anode, usually made of copper or tungsten.
https://en.wikipedia.org/wiki/X-ray_tube
Also, UVC fluerescent tubes are widespread and used to sterilize water (and even erase eproms :D)
I only wanted to point out this, the rest of the answer is absolutely right
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The only risk is fire, and if it is going to catch fire, it's probably better that it catches fire next to you and wakes you up before it spreads, than sets fire to the rest of the house and kills you with the smoke before you're even aware of it.
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I'd imagine that the RF generated by the charging is a FRACTION of the RF generated by the phone itself. Either way I would not be worried about that RF. Think of people who live near transformers, I imagine that generates a decent amount of RF compared to a tiny charging circuit. My parents have one in their yard so I grew up with one and turned out ok. I think? :-DD
The biggest risk as mentioned is fire, and that's rare as well. I personally try to avoid charging lithium ion batteries unattended because of that. Usually I just plug it near my computer. I have a plug there, and one at work. It stays on my bed side at night but fully charged.
I'm actually looking forward to when the powerwall comes out to see how those fair out. I expect there to be some issues, whether a real issue or user error. That's a lot of lithium ion batteries in one place. If they can manage to keep those fires contained within the box that will be a pretty good feat of engineering and if someone can do it I think it will be Tesla.
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Radiation from phones isn't a thing as there are no elements inside your phone that can produce that radiation and to my knowledge we can not produce ionizing radiation artificially without the use of any radioactive isotopes.
Phones do of course emit electromagnetic radiation, at various power levels and on many frequencies. That is how they communicate with the outside world, using various cellphone communication bands, wireless network bands and Bluetooth.
There is no evidence that such radiation is harmful at the levels encountered, but absence of evidence is not evidence of absence. That said, most people are quite unconcerned by having phones or other wireless devices next to them.
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Is it dangerous to charge your phone next to you in bed?
yes.
and it is dangerous to simply lye in bed;
the most dangerous thing you can do is to live: now you have to die, with 100% certainty.
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absence of evidence is not evidence of absence
Like that :-+
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A bed is quite a dangerous device - quite a lot of people die in a bed. :(
The electromagnetic radiation from a phone is usually considered not dangerous. The highest emissions are during use at a rather large distance to the base station. Just charging is a low emission mode.
The residual dangers are a slight fire hazard and if new emission of volatile chemicals (smells like new electronics). So maybe not the best idea when new. Most chargers are quite - a noisy one could be a problem.
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A bed is quite a dangerous device - quite a lot of people die in a bed. :(
Certain , there are many people that by not use an harness or barrier die by falling the bed while they sleeped :-DD
An others died by trying to emulate the tiger's jump and they keep too short or they pass too :-DD
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The field strength around an operating phone isn't negligible, but with the sharp increase in usage globally you'd expect there to be data on any health effects. Those seem to be lacking.
I've certainly noticed an incipient headache if I make a call with the phone to my ear for more than 20 minutes. Whether this is from tissue heating, sub-audible vibrations, or biomagnetic effects I don't know. But I have a suspicion that it's caused by heating of the labyrinth of the inner ear causing a dizzying sensation. Anyone else experience this?
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Major danger is that you will use the phone all night, interrupting your sleep pattern. As well the blue light from the screen will severely disrupt your body clock, making you feel a very similar set of effects equivalent to jet lag all the time.
Best to charge the phone when you come home, and unplug it before going to bed, as this will have the best battery life. Most phones will charge in under 2 hours, so there is no inconvenience. In the morning a quick top up charge of a half our or less will be more than enough to get you through the morning commute.
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The field strength around an operating phone isn't negligible, but with the sharp increase in usage globally you'd expect there to be data on any health effects. Those seem to be lacking.
I've certainly noticed an incipient headache if I make a call with the phone to my ear for more than 20 minutes. Whether this is from tissue heating, sub-audible vibrations, or biomagnetic effects I don't know. But I have a suspicion that it's caused by heating of the labyrinth of the inner ear causing a dizzying sensation. Anyone else experience this?
It's probably because your putting something against your ear for 20 minutes straight. I know what you mean, but it takes longer than 20 minutes for me to get it.
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to my knowledge we can not produce ionizing radiation artificially without the use of any radioactive isotopes.
We can, xray tubes works without any radioactive isotope.
They employ a stron electric field to accelerate a beam of eletrons which strikes against an anode, usually made of copper or tungsten.
https://en.wikipedia.org/wiki/X-ray_tube
Also, UVC fluerescent tubes are widespread and used to sterilize water (and even erase eproms :D)
I only wanted to point out this, the rest of the answer is absolutely right
Safe to say I am not a radiation expert. EM radiation is nothing harmful since it really doesn't do anything aside from induce a very small current in conductive objects. If you go high enough to cause any damage you have a tesla coil, not a transmitter.
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I leave my phone in another room when I go to sleep, since I do consider dangerous to my sleep. It might emit noise or light, and I get grumpy about my sleep being disturbed without good reason.
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EM radiation is nothing harmful since it really doesn't do anything aside from induce a very small current in conductive objects. If you go high enough to cause any damage you have a tesla coil, not a transmitter.
Whew, what a relief knowing it's perfectly safe to put my dog in the microwave to dry off.
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EM radiation is nothing harmful since it really doesn't do anything aside from induce a very small current in conductive objects. If you go high enough to cause any damage you have a tesla coil, not a transmitter.
Whew, what a relief knowing it's perfectly safe to put my dog in the microwave to dry off.
Just make sure your microwave is not actually a tesla coil in disguise. :-DD
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If your bed has pillows and blankets, there is at least some danger of thermal issues, as the heat created by the charging process may have trouble escaping if the phone is heavily covered up by insulation. The worst outcome might be a fire, but I would hope the phone's protection circuitry would kick in and stop things before it got to a dangerous situation. Still, I prefer to charge my phone on a hard surface with no thermal insulation around, giving the phone a chance to stay cool. Whether it's a safety issue or not, keeping circuitry reasonably cool can't be bad for its long-term health.
But I suspect that quite a few people go to bed with their phones charging. With something as common as a cell phone, if there's a safety issue, it's unlikely you'll be the first one to run into it, even though someone must be first. The fact that we don't hear of many burning beds caused by charging cell phones suggests that it's not likely to be a serious problem.
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Frequencies below light can't cause direct cell mutation, has to be UV or above. The only harm they can cause are burns, if you can't feel the energy, you are 100% safe from radio waves below light. The heat you feel from a fire is IR radiation and that has a way higher energy level than any portable electronics and yet you don't get disease from it.
Yes, a large transmitter can cause serious radiation burns (Never stand in front of high power radar), but you won't get cancer from it.
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Frequencies below light can't cause direct cell mutation,
i'm sure your neighbors have quite a few microwave ovens for you to prove otherwise, with the cooperation of your hands.
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Frequencies below light can't cause direct cell mutation,
i'm sure your neighbors have quite a few microwave ovens for you to prove otherwise, with the cooperation of your hands.
Yeah just because it's non ionizing does not mean it's not dangerous, at the right power even non ionizing radiation can be dangerous. That said the power levels of phones and most radio equipment is not harmful. You however don't want to shove your face inside a wave guide of a high power transmitter tube. :P
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Is it dangerous to charge your phone next to you in bed? can electromagnetic radiation from the charger itself can be bad for you? can radiation from your phone be bad for you?
IMHO, no.
- Nuzz
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Safe to say I am not a radiation expert. EM radiation is nothing harmful since it really doesn't do anything aside from induce a very small current in conductive objects.
OK, let's put you straight on something:
Sunlight is EM radiation. It causes sunburn, skin damage and potentially cancer.
X-rays are EM radiation. They can cause irreparable tissue damage and the effect is cumulative.
Gamma rays are EM radiation. They can cause radiation sickness and death.
The microwaves in your oven are EM radiation. They can cause burns and tissue damage, which is why it is important not to mess with microwave ovens if you don't know what you are doing. Also why it is a good idea not to get too close to a radar emitter.
It is very difficult to generalize in the way you tried to do. There are many variables, and many ways a general statement can be false.
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Frequencies below light can't cause direct cell mutation,
i'm sure your neighbors have quite a few microwave ovens for you to prove otherwise, with the cooperation of your hands.
I simply said mircowaves cause burns, not cancerous mutations, hence the use of the word "mutation" and not "damage". :palm: Any frequency above visable light can most certainly mutate DNA, but that's what sunscreen and warning signs are for.
Like I said, you will feel harmful waves below the frequency of light, so you don't have to worry about "those nasty E.M. waves everywhere" unless you currently feel a burning sensation.
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Unless you have a Galaxy Note 7 (https://www.reddit.com/r/technology/comments/50say1/its_official_samsung_recalls_galaxy_note7/), no it's not dangerous.
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Safe to say I am not a radiation expert. EM radiation is nothing harmful since it really doesn't do anything aside from induce a very small current in conductive objects.
OK, let's put you straight on something:
Sunlight is EM radiation. It causes sunburn, skin damage and potentially cancer.
X-rays are EM radiation. They can cause irreparable tissue damage and the effect is cumulative.
Gamma rays are EM radiation. They can cause radiation sickness and death.
The microwaves in your oven are EM radiation. They can cause burns and tissue damage, which is why it is important not to mess with microwave ovens if you don't know what you are doing. Also why it is a good idea not to get too close to a radar emitter.
It is very difficult to generalize in the way you tried to do. There are many variables, and many ways a general statement can be false.
Safe to say I'm not a radiation expert. I thought it was something else.
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There is currently no accepted scientific evidence that celphone radiation levels are harmful.
Note that this is not the same as a blanket statement that cellphones are 100% safe and zero harm will be causes by having one near you for your liftspan.
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Think of it like this:
Smoking was considered healthy once.
And:
In most of the previous 10,000 years we didn't use or carry transmitters.
Books aren't natural either, look what that got us: myopia.
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If you *DON'T* keep it right next to your bed, on your person at home or in your pocket when out and about, the inverse square law will be in your favour *IF* future studies find a reproducible correlation between RF exposure from cellphones and any medical condition.
Outgassing of plasticisers from its case is probably at least as much a hazard as RF exposure . . . .
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Is it dangerous to charge your phone next to you in bed? can electromagnetic radiation from the charger itself can be bad for you? can radiation from your phone be bad for you?
Chargers - no. Mobile phones (while emitting) - yes.
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world's oldest electronics hobbyist is above 100 years old and still going. Perhaps a dose of emf could be healthy :P
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and it is dangerous to simply lye in bed;
This cannot be repeated strongly enough. Do not use lye in your bed. If you need to employ that stuff do it in a proper, well-ventilated work area and wear safety gear.
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world's oldest electronics hobbyist is above 100 years old and still going. Perhaps a dose of emf could be healthy :P
World's oldest smoker is also over 100 years old and still going strong. Perhaps daily doses of smoking is healthy too? :)
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and it is dangerous to simply lye in bed;
This cannot be repeated strongly enough. Do not use lye in your bed. If you need to employ that stuff do it in a proper, well-ventilated work area and wear safety gear.
Lol!
As mentioned above, the battery catching fire is always a possibility. Another thing is any electrical appliance, plugged into the mains, is dangerous if the power line is struck by lightning: the voltage will be so high, it can spark towards you and shock you.
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One other thing not mentioned yet is noise. Some chargers emit a head-splitting high-pitched noise when the battery is full or no phone is connected. I prefer to keep those ones in an area where they don't disturb my sleep.
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The biggest problem is dickhead owners using their mobile phones in earshot of the public.
The following is a bit like Candid Camera. :-DD
https://www.youtube.com/watch?v=eJFIwf_KsJc (https://www.youtube.com/watch?v=eJFIwf_KsJc)
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Thanks, the reason why I created this thread is because today in school my electronic teacher told this bullshit that it is dangerous to charge your phone next to you in bed because of radiation.
I knew this is bullshit instantly because I remember researching this a few years ago but he is electrical engineer and have many more "awards" so I don't want to argue with him.
Electronic teacher, are you kidding?
The energy of the radiation of your phone is simply way to low. Any teacher/professor should know that!
If they don't you can't even take them seriously
This is basics physics.
https://youtu.be/wU5XkhUGzBs
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Frequencies below light can't cause direct cell mutation, has to be UV or above. The only harm they can cause are burns, if you can't feel the energy, you are 100% safe from radio waves below light. The heat you feel from a fire is IR radiation and that has a way higher energy level than any portable electronics and yet you don't get disease from it.
Yes, a large transmitter can cause serious radiation burns (Never stand in front of high power radar), but you won't get cancer from it.
This is bullsh*t.
They use focued IR for cancer threadment. This is even beneath the skin. They heat up cells just a bit higher than body temp. (I believe around 42-45 degrees C). This damages the cancer cells and will be gone if you repeat this process.
The reason why they need to bundle the heat (pretty precisly) is that healthy cells can be damaged as well, and even transform into cancer cells.
From previous experience and lectures in my study I can tell you, you will barely notice any difference. But heating cels long enough, is enough to get bad mutations (on the long run).
Next law of physics also tells us that it's all about the energy. So saying that lower frequencies can't cause any harm is incorrect. It all has to do with energy and duration.
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EM radiation below ionising frequency is extremely safe (burns excepted), recent advances in cancer formation have led to some subtle concerns in the potential role of Heat Shock Proteins in mobile phone EMR. if you follow this 'illogically' should should be far more worried about your radiative bar heater than the mobile phone as the heater has much higher frequency and power levels.
The strongest evidence comes from epidemiology in that in the last 30 years or so the use of mobiles has skyrocketed yet no cancer has followed this trend.
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Frequencies below light can't cause direct cell mutation, has to be UV or above. The only harm they can cause are burns, if you can't feel the energy, you are 100% safe from radio waves below light. The heat you feel from a fire is IR radiation and that has a way higher energy level than any portable electronics and yet you don't get disease from it.
Yes, a large transmitter can cause serious radiation burns (Never stand in front of high power radar), but you won't get cancer from it.
This is bullsh*t.
They use focued IR for cancer threadment. This is even beneath the skin. They heat up cells just a bit higher than body temp. (I believe around 42-45 degrees C). This damages the cancer cells and will be gone if you repeat this process.
The reason why they need to bundle the heat (pretty precisly) is that healthy cells can be damaged as well, and even transform into cancer cells.
From previous experience and lectures in my study I can tell you, you will barely notice any difference. But heating cels long enough, is enough to get bad mutations (on the long run).
Next law of physics also tells us that it's all about the energy. So saying that lower frequencies can't cause any harm is incorrect. It all has to do with energy and duration.
So what you're saying is if you have cancer and put your phone next to you while you sleep it may cure it :P ?
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Those that can, do
Those that can't, teach
And those that can't teach teach teachers.
Or become Administrators.
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Frequencies below light can't cause direct cell mutation, has to be UV or above. The only harm they can cause are burns, if you can't feel the energy, you are 100% safe from radio waves below light. The heat you feel from a fire is IR radiation and that has a way higher energy level than any portable electronics and yet you don't get disease from it.
Yes, a large transmitter can cause serious radiation burns (Never stand in front of high power radar), but you won't get cancer from it.
This is bullsh*t.
They use focued IR for cancer threadment. This is even beneath the skin. They heat up cells just a bit higher than body temp. (I believe around 42-45 degrees C). This damages the cancer cells and will be gone if you repeat this process.
The reason why they need to bundle the heat (pretty precisly) is that healthy cells can be damaged as well, and even transform into cancer cells.
From previous experience and lectures in my study I can tell you, you will barely notice any difference. But heating cels long enough, is enough to get bad mutations (on the long run).
Next law of physics also tells us that it's all about the energy. So saying that lower frequencies can't cause any harm is incorrect. It all has to do with energy and duration.
So what you're saying is if you have cancer and put your phone next to you while you sleep it may cure it :P ?
That's a very random illogical conclusion? :-//
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Thanks, the reason why I created this thread is because today in school my electronic teacher told this bullshit that it is dangerous to charge your phone next to you in bed because of radiation.
I knew this is bullshit instantly because I remember researching this a few years ago but he is electrical engineer and have many more "awards" so I don't want to argue with him.
Maybe he was waiting for someone in the class to call out the bullshit...
...alternatively, he could be no more knowledgeable than that Batteriser guy.
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Btw, the fact that someone has won 'awards', still doesn't mean they can't talk bullsh*t.
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Frequencies below light can't cause direct cell mutation, has to be UV or above. The only harm they can cause are burns, if you can't feel the energy, you are 100% safe from radio waves below light. The heat you feel from a fire is IR radiation and that has a way higher energy level than any portable electronics and yet you don't get disease from it.
Yes, a large transmitter can cause serious radiation burns (Never stand in front of high power radar), but you won't get cancer from it.
This is bullsh*t.
They use focued IR for cancer threadment. This is even beneath the skin. They heat up cells just a bit higher than body temp. (I believe around 42-45 degrees C). This damages the cancer cells and will be gone if you repeat this process.
The reason why they need to bundle the heat (pretty precisly) is that healthy cells can be damaged as well, and even transform into cancer cells.
From previous experience and lectures in my study I can tell you, you will barely notice any difference. But heating cels long enough, is enough to get bad mutations (on the long run).
Next law of physics also tells us that it's all about the energy. So saying that lower frequencies can't cause any harm is incorrect. It all has to do with energy and duration.
What you're talking about is a thermal process. In theory it doesn't matter where the heat comes from. It could just as easily be ultrasound. As long as the heat is accurately targeted at the cancer cells then it doesn't matter.
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Frequencies below light can't cause direct cell mutation, has to be UV or above. The only harm they can cause are burns, if you can't feel the energy, you are 100% safe from radio waves below light. The heat you feel from a fire is IR radiation and that has a way higher energy level than any portable electronics and yet you don't get disease from it.
Yes, a large transmitter can cause serious radiation burns (Never stand in front of high power radar), but you won't get cancer from it.
This is bullsh*t.
They use focued IR for cancer threadment. This is even beneath the skin. They heat up cells just a bit higher than body temp. (I believe around 42-45 degrees C). This damages the cancer cells and will be gone if you repeat this process.
The reason why they need to bundle the heat (pretty precisly) is that healthy cells can be damaged as well, and even transform into cancer cells.
From previous experience and lectures in my study I can tell you, you will barely notice any difference. But heating cels long enough, is enough to get bad mutations (on the long run).
Next law of physics also tells us that it's all about the energy. So saying that lower frequencies can't cause any harm is incorrect. It all has to do with energy and duration.
What you're talking about is a thermal process. In theory it doesn't matter where the heat comes from. It could just as easily be ultrasound. As long as the heat is accurately targeted at the cancer cells then it doesn't matter.
I know, but it is very much in line about the kind of radiation we are talking about here.
I was responding on a post that someone was talking about only causing 'burns'. Which isn't true.
At the end it's all about cell mutation and therefore dangerous wild grow.
I find it remarkable that a lot of people are so concerned about cell phones and radiation, while on the other hand eating black burned food.
Which does have clear evidence that it highers the risks of certain types of cancer.
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Frequencies below light can't cause direct cell mutation, has to be UV or above. The only harm they can cause are burns, if you can't feel the energy, you are 100% safe from radio waves below light. The heat you feel from a fire is IR radiation and that has a way higher energy level than any portable electronics and yet you don't get disease from it.
Yes, a large transmitter can cause serious radiation burns (Never stand in front of high power radar), but you won't get cancer from it.
This is bullsh*t.
They use focued IR for cancer threadment. This is even beneath the skin. They heat up cells just a bit higher than body temp. (I believe around 42-45 degrees C). This damages the cancer cells and will be gone if you repeat this process.
The reason why they need to bundle the heat (pretty precisly) is that healthy cells can be damaged as well, and even transform into cancer cells.
From previous experience and lectures in my study I can tell you, you will barely notice any difference. But heating cels long enough, is enough to get bad mutations (on the long run).
Next law of physics also tells us that it's all about the energy. So saying that lower frequencies can't cause any harm is incorrect. It all has to do with energy and duration.
What you're talking about is a thermal process. In theory it doesn't matter where the heat comes from. It could just as easily be ultrasound. As long as the heat is accurately targeted at the cancer cells then it doesn't matter.
I know, but it is very much in line about the kind of radiation we are talking about here.
I was responding on a post that someone was talking about only causing 'burns'. Which isn't true.
At the end it's all about cell mutation and therefore dangerous wild grow.
Any kind of repetitive tissue damage can increase the risk of cancer. I think the main point is the output power produced by a phone is too low to cause sufficient heating to damage tissue.
I find it remarkable that a lot of people are so concerned about cell phones and radiation, while on the other hand eating black burned food.
Which does have clear evidence that it highers the risks of certain types of cancer.
A while ago there was a study which linked eating red and processed meat to cancer but was very misleading. It's not the meat but how it's cooked. It's the chemicals produced when heating which are carcinogenic. Burnt toast contains carcinogens (although though whether eating it increase the cancer risk is inconclusive) and smoking dried salad leaves would increase one's risk of lung, mouth and stomach cancer, even without any tobacco in the mix.
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If i remember correctly, burnt things mostly consist of carbon and sometimes other chemicals like sulphur. Consuming burnt stuff doesnt cause cancer but the carbon can reduce the amount of oxygen in the blood and the sulphur and other chemicals would be considered poisonous however what chemicals are present in something burnt is highly dependent on the composition of air, the materials of the object and the material used to heat/burn it.
So if you burn white toast, than its possible that the leftover bleach would be bad (this is why you should switch to wholemeal and less processed stuff).
As with phones, radiation ,etc, it depends on the total dosage and time. Skin absorbs most of it like with light. If the phone's emf is higher than background radiation thats where the problem arises. Radiation does definitely cause cancer but it depends on the dose rate and total cumulative dose that penetrate the skin. The main danger of the phone isnt emf, its the heat and danger of exploding (like the fake charger that killed someone in australia). Same as you can sleep with your wifi router and laptop next to you. A desktop is a large source of emf (it consumes a lot of watts for a high end gaming rig) but the desktop's case is designed as a faraday cage so it meets the emf specs. Same with any other product, if they meet the specs it is fine but some devices dont and some are just dangerous.
As with other devices like a laptop the biggest danger of a laptop in a dry area is the PSU overheating and the laptop itself getting hot (macbooks disperse heat via the casing) so if you always placed the PSU or laptop itself on your lap (especially for macbooks) than it is definitely going to heat up that area(you know what i mean). Normally laptops have the fan draw air from below and push it out at the back/side.
So the same is with the phone on your head, its bad for your brain because of the heat and long term exposure to more radiation as the heat from a phone comes from both heavy usage (common for many apps like facebook and such that love to use all the resources of your phone), charging, charging and using at the same time (people tend to leave their phones charging with wifi on so apps run) and so on.
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If i remember correctly, burnt things mostly consist of carbon and sometimes other chemicals like sulphur. Consuming burnt stuff doesnt cause cancer but the carbon can reduce the amount of oxygen in the blood and the sulphur and other chemicals would be considered poisonous however what chemicals are present in something burnt is highly dependent on the composition of air, the materials of the object and the material used to heat/burn it.
So if you burn white toast, than its possible that the leftover bleach would be bad (this is why you should switch to wholemeal and less processed stuff).
All food mostly consists of carbon.
The problem with burnt food is incomplete combustion. What's left is not just carbon and sulphur but a mixture of various hydrocarbons: some of which are carcinogenic.
Nobody likes that burnt food smell, it’s unhealthy too – inhaling burnt food odors is like mainlining carcinogens via your lungs into your blood supply – and … embarrassing.
But a food geek would say say, “Neat. You’ve taken your meal beyond the Maillard reactions into pyrolysis.”
And their multitude of research papers says it all; those much-loved, yet poorly characterised, Maillard reaction products have been transformed into carcinogenic compounds including a range of polycyclic aromatic hydrocarbons (PAH), the same compounds you get in coal tar, tobacco smoke, wood smoke, and in by-products of fuel (fossil or biofuel) combustion (examples of carcinogens).
The same happens to any organic matter, including your once-meal.
http://www.downsizeme.net.au/whats-wrong-burnt-food/ (http://www.downsizeme.net.au/whats-wrong-burnt-food/)
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What you're talking about is a thermal process. In theory it doesn't matter where the heat comes from. It could just as easily be ultrasound. As long as the heat is accurately targeted at the cancer cells then it doesn't matter.
Ultrasonic energy is already used as part of tumour removal... http://www.vesalius.com/cfoli_frms.asp?VID=586&StartFrame=28&tnVID=587 (http://www.vesalius.com/cfoli_frms.asp?VID=586&StartFrame=28&tnVID=587) (warning, graphic!)
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New iphone 7 has No headphone jack, it uses wireless bluetooth? EarPods, more radio frequency radiation in your head
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Thanks, the reason why I created this thread is because today in school my electronic teacher told this bullshit that it is dangerous to charge your phone next to you in bed because of radiation.
Professor at uni showed us 0805 resistors and told us they cannot be soldered by hand. Smallest I have soldered by hand by this moment is 01005 which is like a piece of dust.
Or when he explained how LCD works, it was full of bullshit as well.
Yeah, the important thing is to pass the exams... Agree agree with them, it would be a suicide to deal with them otherwise, since they are going to remember you easily at the exams and when that happens :horse: ... you are going to regret it...
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Ah instructor incompetence. Got to love it. Even with the entire class telling him he was wrong, I had a professor who just refused to let it go. I was giving a presentation on then relatively new CD audio. It was all constant linear velocity back then, so I mentioned that as the head moved from the inside to the outside, the rotational velocity of the disc had to slow down to maintain CLV. He stopped me there and told me I was wrong. I diagrammed it out on the board, showed the math. He STILL was saying I was wrong. Fellow students started speaking up, saying I was right. Finally I was able to continue my presentation. I didn't get a bad grade, in fact I do have to say having to dig into the technical details to prove I was right probably helped me since I can talk technical things with a group of people but to just give a canned speech - forget it, I'll hide under the lectern and rad it over the PA system, thank you very much. Wish I'd had a later CD player I got that had a portion of the disc visible while playing - it was then intuitively obvious that the disc reduced RPM.
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New iphone 7 has No headphone jack, it uses wireless bluetooth? EarPods, more radio frequency radiation in your head
Or you could just use the lightning adaptor that comes with it with your wired headphones.
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If it's a Galaxy Note 7, yes. (https://www.eevblog.com/forum/chat/samsung-recalling-galaxy-note-7-world-wide/)