Hi
Could you tell me do you think Normal Headphones which are connected to your laptop or any other device. Would give off radiation which could damage your brain or body?
I have heard that if you have handsfree kit connected to the mobile it can be more worse then actually touching the mobile to your ear. I was wondering if it is the same thing with a laptop where as the laptop emits alot of radiation and that could travel up the headphones and in to your brain? I am abit curious about the answer.
Thanks
Verified answer
Your laptop does not emit radiation.
2
If your laptop is seriously out of compliance with EMC standards, it could emit high frequency components (from fast transitions associated with digital switching). It would also require that the headphone jack and sound hardware be unshielded and no attempts made by the manufacturer to limit RF signals from emerging through that connection. With both U.S. and European interference standards, there are no manufacturers who could survive if they sold laptops that exceeded the emission limits.
Thus far, no hard evidence has been collected that shows any biological risks to cell phone users. Therefore, it is also unlikely that any signals that did escape your laptop would be capable of causing harm.
Normally functioning headphones do emit audio frequency electromagnetic signals from the speakers, but these are much lower in frequency (20 KHz vs ~1 to 2 GHz for cell phones, a factor of 1 million times less), and people have been wearing headphones for about a hundred years with no appreciable increase in mortality.
So much hysteria arises out of myths and from people who fear new technology. Really, you're at much greater risk of death from using your cell phone while driving and letting your attention wander - not to mention others who might become your victim.
Headphones take (low frequency) electrical impulses and through the use of an electro-magnet cause a membrane to vibrate at the audio frequency sent to it. The low intensity radio frequency waves that could be sent from a transmitter (e.g., blue tooth) and interpreted and converted to audio waves present no hazard. Your body is constantly being bombarded from thousands and thousands of directions by radio frequency HF and higher TV UHF and very high microwave (cell phone) radio waves. And so is everybody else. When you feel the warmth of a hot coffee cup or the sun you are getting ultra low radio waves. Even the light you see is higher intensity and frequency than sound waves or the electrical circuits that cause them.
Don't worry about the bombardment of all of the VERY high energy particles like photons and neutrons. The neutrons blast right though the earth up through your legs and body and out you head harmlessly - usually.
The only concern you need to worry about is the INTENSITY of the sound waves coming out of those head phones. If you can hear noises coming out of another's head phone and they are more than a couple of feet away, rest assured they (and if you do it too) will have significant hearing loss by the time they are in their 20's. If you have to shout into another's ear so she can hear what you are saying over the bands waaay over amplified barrage coming out of their speakers, your hearing may not survive the evening.
The hands free your thinking of are probably bluetooth, NOT wired, which means they are low powered radio transmitters placed directly in the ear. The power is lower than a phone, but is closer to the skull, and more permanently so.
Normal headphones emit no radio waves.
The frequencies phones, and bluetooth use, are close to the micro wave oven frequency, and are technically "micro waves" in radio frequency. Put it this way, a powerful transmitter, using similar bands are electro telescopes for viewing distant galaxies, and pilots have there locations on thier maps, and are not supposed to fly directly over them for health reasons!
so, we have potentially dangerous frequencies, but at low power (were told) in bluetooth, and phones.
Any wired appliance however, does not transmit radio waves.
a simple pair of wireless audio headphones SHOULD work on the FM waveband, far less dangerous, and away from the microwave spectrum. These would be sold with hi fi gear, not phones, and described as FM, not bluetooth, or wifi.
So with a wire, or FM transmition you will be safe from brain cooking, but, just as its late, and you obviously worry about these things, Lets introduce another concept. Normal wired headphones contain a magnetic coil, under electrical current.
NO safety data has ever been produced about magnetism, save for living under power lines, a proven health risk, but described as electrical field, rather than electromagnetic. Like our micro wave telescope, power lines are a strong electrical magnetic force. No data (unlike phones, using microwave energy) exists for low force magnetic energy.
so there's something new to worry anout !
the headphones dont
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