I live near an airport, and my most current hypothesis is the ILS system
transmits a 1020 HZ morse-code identifier that I think I am sensitive to. I have read that the lower the frequency, the less energy in the radio wave. Does that mean that lower frequencies should have less impact on human health than high frequencies? I have also read that lower frequency waves penetrate the body more deeply that high frequency - that seems odd to me since they have less energy why should they penetrate more? -- Paul Coffman [Non-text portions of this message have been removed] |
As far as I know, frequency and energy are two separate things, and not
connected to each other. And indeed, lower frequencies do penetrate more than higher frequencies. But *reception* of waves is a different story. Where *normal* people are not hindered by radio waves, electrosensibles may already react to those waves at very tiny field strength. (At less than 1 uW/m2) Greetings, Charles Claessens member Verband Baubiologie www.milieuziektes.nl www.milieuziektes.be www.hetbitje.nl checked by Bitdefender ----- Original Message ----- From: "Paul Coffman" <[hidden email]> To: <[hidden email]> Sent: Wednesday, October 10, 2007 23:47 Subject: [eSens] how does frequency impact the unhealthiness of radio waves? >I live near an airport, and my most current hypothesis is the ILS system > transmits a 1020 HZ morse-code identifier that I think I am sensitive to. > I > have read that the lower the frequency, the less energy in the radio wave. > Does that mean that lower frequencies should have less impact on human > health than high frequencies? I have also read that lower frequency waves > penetrate the body more deeply that high frequency - that seems odd to me > since they have less energy why should they penetrate more? > > -- > Paul Coffman > > > [Non-text portions of this message have been removed] > > > > > Yahoo! Groups Links > > > > |
In reply to this post by Paul Coffman
I think there is often some confusion. If one considers a single photon,
then its energy is proportional to frequency. This is why UV light and X-rays are so damaging (but at least our bodies have repair systems in place for those). Most photo-chemistry involves a single photon. At lower frequencies, a single photon is probably harmless, but if there's a transmitter it's emitting astronomical numbers of photons, all in phase. With many photons one can begin to forget about quantum mechanics and think about classical electrodynamics. According to one of Allan Frey's early papers, low frequencies tend to be reflected by the skin, while high ones are absorbed in the skin, so the most transmission into the skull is at about 2 GHz (Frey was uncertain about what frequency the reflection started, but claimed to see a reduction due to absorbtion starting around 7 GHz). Again this changes when you get up to X-rays which are not absorbed by the skin, and below RF it's different too. A person can touch a high voltage Tesla coil, make a huge spark, and not die, possibly not feel a thing, perhaps due to the skin effect, or just because the frequency is high enough to not directly stimulate neurons. But I don't know if Tesla coil exposure is safe in the long term. Around 300 MHz the wavelength is 1 m, so a human is about the right size for an antenna. The ability of water to absorb RF decreases at low frequencies, but that might not be of much comfort if one is standing near a radio tower. To me the full story remains complicated and obscure, but hopefully the above makes some sense. Bill On 10/10/07, Paul Coffman <[hidden email]> wrote: > > I live near an airport, and my most current hypothesis is the ILS system > transmits a 1020 HZ morse-code identifier that I think I am sensitive to. > I > have read that the lower the frequency, the less energy in the radio wave. > Does that mean that lower frequencies should have less impact on human > health than high frequencies? I have also read that lower frequency waves > penetrate the body more deeply that high frequency - that seems odd to me > since they have less energy why should they penetrate more? > > -- > Paul Coffman > > [Non-text portions of this message have been removed] > > > [Non-text portions of this message have been removed] |
Regarding photons, photon chemistry, there is a specialist for that.
Look at: http://www.unifiedphysics.com/ and http://www.biophotonicsresearchinstitute.com/index.htm The sparks from a Tesla coil inhibit a high voltage (several thousand Volt) but at a very low Amps. Greetings, Charles Claessens member Verband Baubiologie www.milieuziektes.nl www.milieuziektes.be www.hetbitje.nl checked by Bitdefender ----- Original Message ----- From: "Bill Bruno" <[hidden email]> To: <[hidden email]> Sent: Thursday, October 11, 2007 17:29 Subject: Re: [eSens] how does frequency impact the unhealthiness of radio waves? >I think there is often some confusion. If one considers a single photon, > then > its energy is proportional to frequency. This is why UV light and X-rays > are > so damaging (but at least our bodies have repair systems in place for > those). > Most photo-chemistry involves a single photon. > > At lower frequencies, a single photon is probably harmless, but if there's > a transmitter it's emitting astronomical numbers of photons, all in phase. > With many > photons one can begin to forget about quantum mechanics and think about > classical electrodynamics. > > According to one of Allan Frey's early papers, low frequencies tend to be > reflected by the skin, while high ones are absorbed in the skin, so the > most > transmission into the skull is at about 2 GHz (Frey was uncertain about > what > frequency the reflection started, but claimed to see a reduction due to > absorbtion > starting around 7 GHz). Again this changes when you > get up to X-rays which are not absorbed by the skin, and below RF it's > different > too. A person can touch a high voltage Tesla coil, make a huge spark, and > not die, possibly not > feel a thing, perhaps due to the skin effect, or just because the > frequency > is high enough to not directly > stimulate neurons. But I don't know if Tesla coil exposure is safe in the > long > term. > > Around 300 MHz the wavelength is 1 m, so a human is about the right size > for > an antenna. > > The ability of water to absorb RF decreases at low frequencies, but that > might > not be of much comfort if one is standing near a radio tower. > > To me the full story remains complicated and obscure, but hopefully the > above > makes some sense. > > Bill > > |
Bill -
Your statements seem contrary to Charles: And indeed, lower frequencies do penetrate more than higher frequencies. So I am more confused:) On 10/11/07, charles <[hidden email]> wrote: > > Regarding photons, photon chemistry, there is a specialist for that. > > Look at: > http://www.unifiedphysics.com/ > and > http://www.biophotonicsresearchinstitute.com/index.htm > > The sparks from a Tesla coil inhibit a high voltage (several thousand > Volt) > but at a very low Amps. > > Greetings, > Charles Claessens > member Verband Baubiologie > www.milieuziektes.nl > www.milieuziektes.be > www.hetbitje.nl > checked by Bitdefender > > ----- Original Message ----- > From: "Bill Bruno" <[hidden email] <wbruno%40gmail.com>> > To: <[hidden email] <eSens%40yahoogroups.com>> > Sent: Thursday, October 11, 2007 17:29 > Subject: Re: [eSens] how does frequency impact the unhealthiness of radio > waves? > > >I think there is often some confusion. If one considers a single photon, > > then > > its energy is proportional to frequency. This is why UV light and X-rays > > are > > so damaging (but at least our bodies have repair systems in place for > > those). > > Most photo-chemistry involves a single photon. > > > > At lower frequencies, a single photon is probably harmless, but if > there's > > a transmitter it's emitting astronomical numbers of photons, all in > phase. > > With many > > photons one can begin to forget about quantum mechanics and think about > > classical electrodynamics. > > > > According to one of Allan Frey's early papers, low frequencies tend to > be > > reflected by the skin, while high ones are absorbed in the skin, so the > > most > > transmission into the skull is at about 2 GHz (Frey was uncertain about > > what > > frequency the reflection started, but claimed to see a reduction due to > > absorbtion > > starting around 7 GHz). Again this changes when you > > get up to X-rays which are not absorbed by the skin, and below RF it's > > different > > too. A person can touch a high voltage Tesla coil, make a huge spark, > and > > not die, possibly not > > feel a thing, perhaps due to the skin effect, or just because the > > frequency > > is high enough to not directly > > stimulate neurons. But I don't know if Tesla coil exposure is safe in > the > > long > > term. > > > > Around 300 MHz the wavelength is 1 m, so a human is about the right size > > > for > > an antenna. > > > > The ability of water to absorb RF decreases at low frequencies, but that > > might > > not be of much comfort if one is standing near a radio tower. > > > > To me the full story remains complicated and obscure, but hopefully the > > above > > makes some sense. > > > > Bill > > > > > > > -- Paul Coffman [Non-text portions of this message have been removed] |
It is confusing. I believe 2 GHz penetrates more than 9 GHz.
And probably 60 Hz penetrates more than 100 kHz. X-rays and gamma rays penetrate best of all. So, it depends which range you're considering. It's not a monotonic function. There is a peak around 1 or 2 GHz. There's probably a minumum somewhere between there and 60 Hz? Bill On 10/11/07, Paul Coffman <[hidden email]> wrote: > > Bill - > > Your statements seem contrary to Charles: > > And indeed, lower frequencies do penetrate more than higher frequencies. > > So I am more confused:) > > On 10/11/07, charles <[hidden email]<charles%40milieuziektes.be>> > wrote: > > > > Regarding photons, photon chemistry, there is a specialist for that. > > > > Look at: > > http://www.unifiedphysics.com/ > > and > > http://www.biophotonicsresearchinstitute.com/index.htm > > > > The sparks from a Tesla coil inhibit a high voltage (several thousand > > Volt) > > but at a very low Amps. > > > > Greetings, > > Charles Claessens > > member Verband Baubiologie > > www.milieuziektes.nl > > www.milieuziektes.be > > www.hetbitje.nl > > checked by Bitdefender > > > > ----- Original Message ----- > > From: "Bill Bruno" <[hidden email] <wbruno%40gmail.com><wbruno%40gmail.com>> > > To: <[hidden email] <eSens%40yahoogroups.com> <eSens%40yahoogroup > s.com>> > > Sent: Thursday, October 11, 2007 17:29 > > Subject: Re: [eSens] how does frequency impact the unhealthiness of > radio > > waves? > > > > >I think there is often some confusion. If one considers a single > photon, > > > then > > > its energy is proportional to frequency. This is why UV light and > X-rays > > > are > > > so damaging (but at least our bodies have repair systems in place for > > > those). > > > Most photo-chemistry involves a single photon. > > > > > > At lower frequencies, a single photon is probably harmless, but if > > there's > > > a transmitter it's emitting astronomical numbers of photons, all in > > phase. > > > With many > > > photons one can begin to forget about quantum mechanics and think > about > > > classical electrodynamics. > > > > > > According to one of Allan Frey's early papers, low frequencies tend to > > be > > > reflected by the skin, while high ones are absorbed in the skin, so > the > > > most > > > transmission into the skull is at about 2 GHz (Frey was uncertain > about > > > what > > > frequency the reflection started, but claimed to see a reduction due > to > > > absorbtion > > > starting around 7 GHz). Again this changes when you > > > get up to X-rays which are not absorbed by the skin, and below RF it's > > > different > > > too. A person can touch a high voltage Tesla coil, make a huge spark, > > and > > > not die, possibly not > > > feel a thing, perhaps due to the skin effect, or just because the > > > frequency > > > is high enough to not directly > > > stimulate neurons. But I don't know if Tesla coil exposure is safe in > > the > > > long > > > term. > > > > > > Around 300 MHz the wavelength is 1 m, so a human is about the right > size > > > > > for > > > an antenna. > > > > > > The ability of water to absorb RF decreases at low frequencies, but > that > > > might > > > not be of much comfort if one is standing near a radio tower. > > > > > > To me the full story remains complicated and obscure, but hopefully > the > > > above > > > makes some sense. > > > > > > Bill > > > > > > > > > > > > > > -- > Paul Coffman > > [Non-text portions of this message have been removed] > > > [Non-text portions of this message have been removed] |
There are 2 IEEE publications which address this issue directly:
IEEE Standard for Safety Levels with Respect to Human Exposure to Electromagnetic Fields, 0-3 kHz and IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz They have data and nice graphs showing what they consider "safety levels" of exposure at the various frequencies. Although their conclusions about what is "safe" are not based on non-thermal effects, the point is clearly shown that the human body absorbs electromagnetic fields in a non-linear fashion. You can see a summary graph at the bottom of http://www.lessemf.com/standard.html Note that the 30 MHz to 300 MHz range is the most dangerous (best absorbed). Emil > It is confusing. I believe 2 GHz penetrates more than 9 GHz. > > And probably 60 Hz penetrates more than 100 kHz. > > X-rays and gamma rays penetrate best of all. > > So, it depends which range you're considering. It's not a monotonic > function. > > There is a peak around 1 or 2 GHz. There's probably a minumum somewhere > between there and 60 Hz? > > Bill |
Emil -
If I read that graph correctly, 1Khz is the worst frequency. Am I correct? The frequency of this ILS morse code thing is 1020 Hz, which is smack dab in the middle of that lowest line. On 10/11/07, Less EMF Inc <[hidden email]> wrote: > > There are 2 IEEE publications which address this issue directly: > > IEEE Standard for Safety Levels with Respect to Human Exposure to > Electromagnetic Fields, 0-3 kHz > > and > > IEEE Standard for Safety Levels with Respect to Human Exposure to Radio > Frequency Electromagnetic Fields, 3 kHz to 300 GHz > > They have data and nice graphs showing what they consider "safety levels" > of > exposure at the various frequencies. Although their conclusions about what > is "safe" are not based on non-thermal effects, the point is clearly shown > that the human body absorbs electromagnetic fields in a non-linear > fashion. > > You can see a summary graph at the bottom of > http://www.lessemf.com/standard.html > Note that the 30 MHz to 300 MHz range is the most dangerous (best > absorbed). > > Emil > > > It is confusing. I believe 2 GHz penetrates more than 9 GHz. > > > > And probably 60 Hz penetrates more than 100 kHz. > > > > X-rays and gamma rays penetrate best of all. > > > > So, it depends which range you're considering. It's not a monotonic > > function. > > > > There is a peak around 1 or 2 GHz. There's probably a minumum somewhere > > between there and 60 Hz? > > > > Bill > > > -- Paul Coffman [Non-text portions of this message have been removed] |
However, not the frequency nor the energy is important.
The devastating effect on our body is the information which is packed upon the high frequency carrier. Like the pulsrate and the longitudinal waves. Greetings, Charles Claessens member Verband Baubiologie www.milieuziektes.nl www.milieuziektes.be www.hetbitje.nl checked by Bitdefender ----- Original Message ----- From: "Paul Coffman" <[hidden email]> To: <[hidden email]> Sent: Thursday, October 11, 2007 21:16 Subject: Re: [eSens] how does frequency impact the unhealthiness of radio waves? > Emil - > > If I read that graph correctly, 1Khz is the worst frequency. Am I > correct? > The frequency of this ILS morse code thing is 1020 Hz, which is smack dab > in > the middle of that lowest line. > > On 10/11/07, Less EMF Inc <[hidden email]> wrote: >> >> There are 2 IEEE publications which address this issue directly: >> >> IEEE Standard for Safety Levels with Respect to Human Exposure to >> Electromagnetic Fields, 0-3 kHz >> >> and >> >> IEEE Standard for Safety Levels with Respect to Human Exposure to Radio >> Frequency Electromagnetic Fields, 3 kHz to 300 GHz >> |
In reply to this post by Paul Coffman
It looks like that, but not really.
The IEEE 0-3 kHz is not on that graph. What you see are the Swedish standards for ELF and VLF in the lower frequency range. IEEE allows the following for "Magnetic maximum permissible exposure (MPE) levels: General public exposure of head and torso": Frequency range (Hz) Magnetic Field (mT) < 0.153 118mT 0.153-20 18.1/frequency 20-759 .904 759-3000 687/frequency So, the allowable exposure get smaller (more or less) as frequency increases (because biological effect increases with increasing frequency in this range), but not in a linear fashion. Emil ----- Original Message ----- From: "Paul Coffman" <[hidden email]> To: <[hidden email]> Sent: Thursday, October 11, 2007 2:16 PM Subject: Re: [eSens] how does frequency impact the unhealthiness of radio waves? > Emil - > > If I read that graph correctly, 1Khz is the worst frequency. Am I > correct? > The frequency of this ILS morse code thing is 1020 Hz, which is smack dab > in > the middle of that lowest line. > > On 10/11/07, Less EMF Inc <[hidden email]> wrote: >> >> There are 2 IEEE publications which address this issue directly: >> >> IEEE Standard for Safety Levels with Respect to Human Exposure to >> Electromagnetic Fields, 0-3 kHz >> >> and >> >> IEEE Standard for Safety Levels with Respect to Human Exposure to Radio >> Frequency Electromagnetic Fields, 3 kHz to 300 GHz >> >> They have data and nice graphs showing what they consider "safety levels" >> of >> exposure at the various frequencies. Although their conclusions about >> what >> is "safe" are not based on non-thermal effects, the point is clearly >> shown >> that the human body absorbs electromagnetic fields in a non-linear >> fashion. >> >> You can see a summary graph at the bottom of >> http://www.lessemf.com/standard.html >> Note that the 30 MHz to 300 MHz range is the most dangerous (best >> absorbed). >> >> Emil >> >> > It is confusing. I believe 2 GHz penetrates more than 9 GHz. >> > >> > And probably 60 Hz penetrates more than 100 kHz. >> > >> > X-rays and gamma rays penetrate best of all. >> > >> > So, it depends which range you're considering. It's not a monotonic >> > function. >> > >> > There is a peak around 1 or 2 GHz. There's probably a minumum somewhere >> > between there and 60 Hz? >> > >> > Bill >> >> >> > > > > -- > Paul Coffman > > > [Non-text portions of this message have been removed] > > > > > Yahoo! Groups Links > > > > |
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