FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups 
 ProfileProfile   PreferencesPreferences   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Forum index » Science and Technology » Physics » Electromagnetics
Power sub station and me
Post new topic   Reply to topic Page 2 of 3 [39 Posts] View previous topic :: View next topic
Goto page:  Previous  1, 2, 3 Next
Author Message
Dimitrios Tzortzakakis
science forum beginner


Joined: 01 May 2005
Posts: 12

PostPosted: Thu May 12, 2005 6:16 pm    Post subject: Re: Power sub station and me Reply with quote

Probably the hum is corona discharge, thus the very strong electric field
around the conductor of HV lines (V~400 kV) ionizes air.Did you consider
going to the psychiatrist?My aunt, mentally a very healthy person, and with
a good health, generally, suffered from terrible headaches (migraines) all
her life, and no doctor found anything.Now she takes antidepressant, and the
headaches have stopped.

--
Tzortzakakis Dimitrios
major in electrical engineering, freelance electrician
FH von Iraklion-Kreta, freiberuflicher Elektriker
dimtzort AT otenet DOT gr
Ο "operator jay" <none@none.none> έγραψε στο μήνυμα
news:hxwge.2813$fF6.31083@news1.mts.net...
Quote:

"Mirth" <contactmirth@hotmail.com> wrote in message
news:1115780367.417314.286160@g43g2000cwa.googlegroups.com...

Not quite sure if this is the best place to post this but it's a start
I guess.

Crossposting to alt.engineering.electrical. Your entire original message
is
included below.

I didn't notice at first because it was through the day but the very
first night I lived there I discovered that at night the hum from this
substation was so loud I had to sleep with ear plugs in.

2) Is there anyone in the UK/Scotland who will come and measure these
EMF fields for me to find out if they are indeed causing the problems?

The hum is audio noise and not an electric, magnetic, or electromagnetic
field (EMF).


----- Original Message -----
From: "Mirth" <contactmirth@hotmail.com
Newsgroups: sci.physics.electromag
Sent: Tuesday, May 10, 2005 9:59 PM
Subject: Power sub station and me


Hi all,

Not quite sure if this is the best place to post this but it's a start
I guess.

3 months ago I moved in to a new house, I live in Scotland,
incidentally, the house itself is only 2 years old. About 80 metres
away there is a huge electrical sub station with about a dozen massive
cables running out of it running parallel to my house.

I didn't notice at first because it was through the day but the very
first night I lived there I discovered that at night the hum from this
substation was so loud I had to sleep with ear plugs in. This is in a
modern house with double glazing.

This was ok and I eventually got used to it. However I have discovered
that this hum is the same night and day. The reason I know this is
because I have recently, about 18 days ago, started working from home.
I can hear this hum above all other background noise even in the middle
of the day.

Now to my point. 5 days after working from home I started getting an
ache in my Jaw and around my temple. I initially thought it was
toothache so I went to the dentist. He said my teeth were fine, no
problems. Unfortunately the pain kept getting worse and spread to the
back of my head, the back of my eyes and the base of my neck. Being a
computer programmer my next thought was some kind of stress related
issue or perhaps an RSI issue from work. So I went to the doctor. He
took blood tests and blood pressure and the results came back ok.
Nothing major but my blood pressure was slightly raised.

The problem however got worse. I'm now in a situation where I am taking
the max amount of pain killers allowed everyday just to keep the
incredible headache pain to a bearable level. I am generally quite fit
and have never suffered migraines or anything similar before and I'm
now getting to the stage where my stomach hurts constantly (probably
due to the pain killers) and I'm awake most of the time. Obviously this
isn't good.

It just seems rather coincidental that these things started appearing
when I started to spend most of my time in the house near this sub
station. The only full day I spent away from here in the last 14 days I
don't actually recall having any headache.

So I guess my questions are...

1) Is there any proper scientific research I can read into this?

2) Is there anyone in the UK/Scotland who will come and measure these
EMF fields for me to find out if they are indeed causing the problems?

3)Is there any other information readily available that people can
point me to as I'm finding it increasingly difficult to focus on
anything thse days?

I'm really at a loss as to why suddenly I should feel so terribly ill
and any help is appreciated. Thanks for listening.


Back to top
Paul Hovnanian P.E.
science forum beginner


Joined: 26 Apr 2005
Posts: 39

PostPosted: Fri May 13, 2005 12:01 am    Post subject: Re: Power sub station and me Reply with quote

Dimitrios Tzortzakakis wrote:
Quote:

Probably the hum is corona discharge, thus the very strong electric field
around the conductor of HV lines (V~400 kV) ionizes air.Did you consider
going to the psychiatrist?My aunt, mentally a very healthy person, and with
a good health, generally, suffered from terrible headaches (migraines) all
her life, and no doctor found anything.Now she takes antidepressant, and the
headaches have stopped.

Not likely. Corona discharge produces more of a crackle or frying sound.
If its a substation with a transformer, its the core generating an
audible hum due to the magnetostricitve effect. The change in flux
density within the core causes it to expand and contract slightly.

--
Paul Hovnanian mailto:Paul@Hovnanian.com
------------------------------------------------------------------
Quantum Mechanics: The dreams stuff is made of.
Back to top
Paul Hovnanian P.E.
science forum beginner


Joined: 26 Apr 2005
Posts: 39

PostPosted: Fri May 13, 2005 12:07 am    Post subject: Re: Power sub station and me Reply with quote

Mirth wrote:
Quote:

Andrew - I have been an IT professional for 14 years now. I know how to
set my desk up but thanks for the info :)

Anyway thanks for the posts guys but the TMJ one is almost certainly
correct. I blame my new dentist and the ear plugs going in every night.
Still shouldn't be allowed to make that damn noise at night. It's
louder than a van running outside the window.

Hmm (no pun intended). This might be an excellent application for active
noise cancellation. The source has a constant amplitude, frequency and
harmonic content. Its a relatively low frequency, 50 Hz and a few
harmonics and you really only need to cancel it at a fixed position.

--
Paul Hovnanian mailto:Paul@Hovnanian.com
------------------------------------------------------------------
IRS: We've got what it takes to take what you've got.
Back to top
Guest






PostPosted: Fri May 13, 2005 1:25 am    Post subject: Re: Power sub station and me Reply with quote

In alt.engineering.electrical Paul Hovnanian P.E. <Paul@hovnanian.com> wrote:
| Mirth wrote:
|>
|> Andrew - I have been an IT professional for 14 years now. I know how to
|> set my desk up but thanks for the info Smile
|>
|> Anyway thanks for the posts guys but the TMJ one is almost certainly
|> correct. I blame my new dentist and the ear plugs going in every night.
|> Still shouldn't be allowed to make that damn noise at night. It's
|> louder than a van running outside the window.
|
| Hmm (no pun intended). This might be an excellent application for active
| noise cancellation. The source has a constant amplitude, frequency and
| harmonic content. Its a relatively low frequency, 50 Hz and a few
| harmonics and you really only need to cancel it at a fixed position.

Wouldn't that be 100 Hz if it's magentostriction?

--
-----------------------------------------------------------------------------
| Phil Howard KA9WGN | http://linuxhomepage.com/ http://ham.org/ |
| (first name) at ipal.net | http://phil.ipal.org/ http://ka9wgn.ham.org/ |
-----------------------------------------------------------------------------
Back to top
Guest






PostPosted: Fri May 13, 2005 1:29 am    Post subject: Re: Power sub station and me Reply with quote

In alt.engineering.electrical Dimitrios Tzortzakakis <use@address.below> wrote:

| Probably the hum is corona discharge, thus the very strong electric field
| around the conductor of HV lines (V~400 kV) ionizes air.Did you consider
| going to the psychiatrist?My aunt, mentally a very healthy person, and with
| a good health, generally, suffered from terrible headaches (migraines) all
| her life, and no doctor found anything.Now she takes antidepressant, and the
| headaches have stopped.

When I hear corona discharge on 765kV lines (right next to where one of my
relatives lives), it doesn't sound much like a hum.

I would suspect magnetostriction in a transformer. But in this case that
would have to be rather loud. I'm wondering if it is something else and
is being caused by stray ground return currents on the branches going out.

--
-----------------------------------------------------------------------------
| Phil Howard KA9WGN | http://linuxhomepage.com/ http://ham.org/ |
| (first name) at ipal.net | http://phil.ipal.org/ http://ka9wgn.ham.org/ |
-----------------------------------------------------------------------------
Back to top
FrediFizzx
science forum Guru


Joined: 01 May 2005
Posts: 774

PostPosted: Fri May 13, 2005 4:50 am    Post subject: Re: Power sub station and me Reply with quote

"Mirth" <contactmirth@hotmail.com> wrote in message
news:1115801249.620602.173480@g44g2000cwa.googlegroups.com...
| Thanks, Mark. It's way more than gritting my teeth I think. TMJ is
| almost certianly what it is but i still believe that the noise from
| this sub station may well be causing it in a way. It may not be the
EMF
| but having to sleep with earplugs in every night cant be good for the
| jaw.
|
| Thanks for the pointer. I'm sure the information will help.

Mark hit it right on the head. You have TMJ. I know because I have had
it for over 35 years now. The noise, etc. could be aggravating it for
sure. Get yourself one of those cheap tooth guards that athletes use
and wear it on your upper teeth when you sleep. Your dentist will sell
you one that probably costs lots of money but you can trim down the
cheap ones to make them comfortable. I have broken and lost a couple of
teeth from grinding so hard in my sleep. So get your teeth protected
right away. And it should help the TMJ also. Valiums worked really
good for the headaches when they were real bad when I was younger and
they made me sleep more relaxed. Good if you want some temporary
relief; not a long term solution though. The best thing was
hypnotherapy. Forget over the counter pain killers; they don't hardly
work at all. Plus, if you drink coffee or tea or soft drinks with
caffeine, stop. If you have been using caffeine, your headaches might
temporarily get worse though when you stop. Get your eyes checked also
if you haven't. Eye strain can also aggravate TMJ.

FrediFizzx

http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.pdf
or postscript
http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.ps
Back to top
w_tom
science forum beginner


Joined: 13 May 2005
Posts: 2

PostPosted: Fri May 13, 2005 1:41 pm    Post subject: Re: Power sub station and me Reply with quote

This sounds similar to something called Taos Hum.

Mirth wrote:
Quote:
Andrew - I have been an IT professional for 14 years now. I know how to
set my desk up but thanks for the info :)

Anyway thanks for the posts guys but the TMJ one is almost certainly
correct. I blame my new dentist and the ear plugs going in every night.
Still shouldn't be allowed to make that damn noise at night. It's
louder than a van running outside the window.
Back to top
Mark Fergerson
science forum Guru Wannabe


Joined: 07 May 2005
Posts: 182

PostPosted: Fri May 13, 2005 11:48 pm    Post subject: Re: Power sub station and me Reply with quote

FrediFizzx wrote:
Quote:
"Mirth" <contactmirth@hotmail.com> wrote in message
news:1115801249.620602.173480@g44g2000cwa.googlegroups.com...
| Thanks, Mark. It's way more than gritting my teeth I think. TMJ is
| almost certianly what it is but i still believe that the noise from
| this sub station may well be causing it in a way. It may not be the
EMF
| but having to sleep with earplugs in every night cant be good for the
| jaw.
|
| Thanks for the pointer. I'm sure the information will help.

Mark hit it right on the head. You have TMJ. I know because I have had
it for over 35 years now.

35 years? Yow! Why hasn't it been fixed? Mine was due to plain
vanilla "wisdom" teeth, but a buddy of mine had a worse case that
required some fairly fancy surgery, and it worked out fine.

Uh, I may or may not have nailed the pain thing, but I was
wondering if the OP has checked for a feral beehive built into his
house walls. That's been found to be the cause of more than one case
of "mysterious hum".

Mark L. Fergerson
Back to top
Paul Hovnanian P.E.
science forum beginner


Joined: 26 Apr 2005
Posts: 39

PostPosted: Sat May 14, 2005 12:35 am    Post subject: Re: Power sub station and me Reply with quote

phil-news-nospam@ipal.net wrote:
Quote:

In alt.engineering.electrical Paul Hovnanian P.E. <Paul@hovnanian.com> wrote:
| Mirth wrote:
|
|> Andrew - I have been an IT professional for 14 years now. I know how to
|> set my desk up but thanks for the info Smile
|
|> Anyway thanks for the posts guys but the TMJ one is almost certainly
|> correct. I blame my new dentist and the ear plugs going in every night.
|> Still shouldn't be allowed to make that damn noise at night. It's
|> louder than a van running outside the window.
|
| Hmm (no pun intended). This might be an excellent application for active
| noise cancellation. The source has a constant amplitude, frequency and
| harmonic content. Its a relatively low frequency, 50 Hz and a few
| harmonics and you really only need to cancel it at a fixed position.

Wouldn't that be 100 Hz if it's magentostriction?

True. But its still a (relatively) simple problem compared to other
proposed active cancellation applications.

--
Paul Hovnanian mailto:Paul@Hovnanian.com
------------------------------------------------------------------
A limerick packs laughs anatomical
Into space that is quite economical.
But the good ones I've seen
So seldom are clean,
And the clean ones so seldom are comical.
Back to top
JohnR66
science forum beginner


Joined: 14 May 2005
Posts: 6

PostPosted: Sat May 14, 2005 12:44 am    Post subject: Re: Power sub station and me Reply with quote

"Paul Hovnanian P.E." <Paul@Hovnanian.com> wrote in message
news:42840BD8.B9A0F73F@Hovnanian.com...
Quote:
Mirth wrote:

Andrew - I have been an IT professional for 14 years now. I know how to
set my desk up but thanks for the info :)

Anyway thanks for the posts guys but the TMJ one is almost certainly
correct. I blame my new dentist and the ear plugs going in every night.
Still shouldn't be allowed to make that damn noise at night. It's
louder than a van running outside the window.

Hmm (no pun intended). This might be an excellent application for active
noise cancellation. The source has a constant amplitude, frequency and
harmonic content. Its a relatively low frequency, 50 Hz and a few
harmonics and you really only need to cancel it at a fixed position.

--
Paul Hovnanian mailto:Paul@Hovnanian.com
------------------------------------------------------------------
IRS: We've got what it takes to take what you've got.

Actually it is full of harmonics due to the vibrating metal parts and even
the harmonics in the current waveform itself. Play a pure 50 Hz tone through
a hi-fi speaker system and it has a clean deep bass sound, not a ringing
transformer hum.
John
Back to top
Don Kelly
science forum Guru Wannabe


Joined: 30 Apr 2005
Posts: 166

PostPosted: Sat May 14, 2005 1:35 am    Post subject: Re: Power sub station and me Reply with quote

<phil-news-nospam@ipal.net> wrote in message
news:d60anj32c92@news2.newsguy.com...
Quote:
In alt.engineering.electrical Mirth <contactmirth@hotmail.com> wrote:

| Andrew - I have been an IT professional for 14 years now. I know how to
| set my desk up but thanks for the info Smile
|
| Anyway thanks for the posts guys but the TMJ one is almost certainly
| correct. I blame my new dentist and the ear plugs going in every night.
| Still shouldn't be allowed to make that damn noise at night. It's
| louder than a van running outside the window.

Could you take a portable audio recorder and start recording this sound,
starting from inside you house? Periodically talk in a normal voice to
describe where you are and how far in meters from the substation you are
as you walk in the best path to go there. Then convert to a WAV file and
put it online. An MP3 is OK, too, but a WAV file may be important.
--------------------


In addition beg, borrow or rent an audio db meter. There are standards and
if you can get recorded and verified noise levels, you have some ammunition
to use. A WAV file does not give a non-objective measure of sound level.

--
Don Kelly
dhky@peeshaw.ca
remove the urine to answer

Quote:

--
--------------------------------------------------------------------------
---
| Phil Howard KA9WGN | http://linuxhomepage.com/
http://ham.org/ |
| (first name) at ipal.net | http://phil.ipal.org/
http://ka9wgn.ham.org/ |
--------------------------------------------------------------------------
---
Back to top
Don Kelly
science forum Guru Wannabe


Joined: 30 Apr 2005
Posts: 166

PostPosted: Sat May 14, 2005 1:38 am    Post subject: Re: Power sub station and me Reply with quote

"JohnR66" <nospam@att.net> wrote in message
news:tCdhe.210937$cg1.129488@bgtnsc04-news.ops.worldnet.att.net...
Quote:
"Paul Hovnanian P.E." <Paul@Hovnanian.com> wrote in message
news:42840BD8.B9A0F73F@Hovnanian.com...
Mirth wrote:

Andrew - I have been an IT professional for 14 years now. I know how to
set my desk up but thanks for the info :)

Anyway thanks for the posts guys but the TMJ one is almost certainly
correct. I blame my new dentist and the ear plugs going in every night.
Still shouldn't be allowed to make that damn noise at night. It's
louder than a van running outside the window.

Hmm (no pun intended). This might be an excellent application for active
noise cancellation. The source has a constant amplitude, frequency and
harmonic content. Its a relatively low frequency, 50 Hz and a few
harmonics and you really only need to cancel it at a fixed position.

--
Paul Hovnanian mailto:Paul@Hovnanian.com
------------------------------------------------------------------
IRS: We've got what it takes to take what you've got.

Actually it is full of harmonics due to the vibrating metal parts and even
the harmonics in the current waveform itself. Play a pure 50 Hz tone
through
a hi-fi speaker system and it has a clean deep bass sound, not a ringing
transformer hum.
John
------------

Still active cancellation works- it has been used.- It cancels harmonics as
well as the fundamental--
Don Kelly
dhky@peeshaw.ca
remove the urine to answer
Back to top
Don Kelly
science forum Guru Wannabe


Joined: 30 Apr 2005
Posts: 166

PostPosted: Sat May 14, 2005 1:51 am    Post subject: Re: Power sub station and me Reply with quote

"Dimitrios Tzortzakakis" <use@address.below> wrote in message
news:d60dr0$7nd$1@usenet.otenet.gr...
Quote:
Probably the hum is corona discharge, thus the very strong electric field
around the conductor of HV lines (V~400 kV) ionizes air.Did you consider
going to the psychiatrist?My aunt, mentally a very healthy person, and
with
a good health, generally, suffered from terrible headaches (migraines) all
her life, and no doctor found anything.Now she takes antidepressant, and
the
headaches have stopped.

--
Tzortzakakis Dimitrios
major in electrical engineering, freelance electrician
FH von Iraklion-Kreta, freiberuflicher Elektriker
dimtzort AT otenet DOT gr
------------------

Have you actually heard corona discharge? It is quite different from the
normal hum of transformers in that there is a larger high frequency
non-harmonic component. There is also no indication that the voltage level
(it can be well below 400KV) is such that appreciable corona is present or
that there is any weather dependence which would be the case with corona.

--
Don Kelly
dhky@peeshaw.ca
remove the urine to answer

Quote:
Ο "operator jay" <none@none.none> έγραψε στο μήνυμα
news:hxwge.2813$fF6.31083@news1.mts.net...

"Mirth" <contactmirth@hotmail.com> wrote in message
news:1115780367.417314.286160@g43g2000cwa.googlegroups.com...

Not quite sure if this is the best place to post this but it's a start
I guess.

Crossposting to alt.engineering.electrical. Your entire original
message
is
included below.

I didn't notice at first because it was through the day but the very
first night I lived there I discovered that at night the hum from this
substation was so loud I had to sleep with ear plugs in.

2) Is there anyone in the UK/Scotland who will come and measure these
EMF fields for me to find out if they are indeed causing the problems?

The hum is audio noise and not an electric, magnetic, or electromagnetic
field (EMF).


----- Original Message -----
From: "Mirth" <contactmirth@hotmail.com
Newsgroups: sci.physics.electromag
Sent: Tuesday, May 10, 2005 9:59 PM
Subject: Power sub station and me


Hi all,

Not quite sure if this is the best place to post this but it's a start
I guess.

3 months ago I moved in to a new house, I live in Scotland,
incidentally, the house itself is only 2 years old. About 80 metres
away there is a huge electrical sub station with about a dozen massive
cables running out of it running parallel to my house.

I didn't notice at first because it was through the day but the very
first night I lived there I discovered that at night the hum from this
substation was so loud I had to sleep with ear plugs in. This is in a
modern house with double glazing.

This was ok and I eventually got used to it. However I have discovered
that this hum is the same night and day. The reason I know this is
because I have recently, about 18 days ago, started working from
home.
I can hear this hum above all other background noise even in the
middle
of the day.

Now to my point. 5 days after working from home I started getting an
ache in my Jaw and around my temple. I initially thought it was
toothache so I went to the dentist. He said my teeth were fine, no
problems. Unfortunately the pain kept getting worse and spread to the
back of my head, the back of my eyes and the base of my neck. Being a
computer programmer my next thought was some kind of stress related
issue or perhaps an RSI issue from work. So I went to the doctor. He
took blood tests and blood pressure and the results came back ok.
Nothing major but my blood pressure was slightly raised.

The problem however got worse. I'm now in a situation where I am
taking
the max amount of pain killers allowed everyday just to keep the
incredible headache pain to a bearable level. I am generally quite fit
and have never suffered migraines or anything similar before and I'm
now getting to the stage where my stomach hurts constantly (probably
due to the pain killers) and I'm awake most of the time. Obviously
this
isn't good.

It just seems rather coincidental that these things started appearing
when I started to spend most of my time in the house near this sub
station. The only full day I spent away from here in the last 14 days
I
don't actually recall having any headache.

So I guess my questions are...

1) Is there any proper scientific research I can read into this?

2) Is there anyone in the UK/Scotland who will come and measure these
EMF fields for me to find out if they are indeed causing the problems?

3)Is there any other information readily available that people can
point me to as I'm finding it increasingly difficult to focus on
anything thse days?

I'm really at a loss as to why suddenly I should feel so terribly ill
and any help is appreciated. Thanks for listening.




Back to top
FrediFizzx
science forum Guru


Joined: 01 May 2005
Posts: 774

PostPosted: Sat May 14, 2005 5:23 am    Post subject: Re: Power sub station and me Reply with quote

"Mark Fergerson" <nunya@biz.ness> wrote in message
news:8Oche.32297$fI.27151@fed1read05...
| FrediFizzx wrote:
| > "Mirth" <contactmirth@hotmail.com> wrote in message
| > news:1115801249.620602.173480@g44g2000cwa.googlegroups.com...
| > | Thanks, Mark. It's way more than gritting my teeth I think. TMJ is
| > | almost certianly what it is but i still believe that the noise
from
| > | this sub station may well be causing it in a way. It may not be
the
| > EMF
| > | but having to sleep with earplugs in every night cant be good for
the
| > | jaw.
| > |
| > | Thanks for the pointer. I'm sure the information will help.
| >
| > Mark hit it right on the head. You have TMJ. I know because I have
had
| > it for over 35 years now.
|
| 35 years? Yow! Why hasn't it been fixed? Mine was due to plain
| vanilla "wisdom" teeth, but a buddy of mine had a worse case that
| required some fairly fancy surgery, and it worked out fine.

Apparently my particular flavor is not easily fixed. At least that is
what the last doctor a few years ago told me. And it is only a minor
annoyance now-a-days. Only gets bad when I have to talk alot. So I
just shut up and type away. Wink But now my left hand is messed up from
typing. Go figure.

| Uh, I may or may not have nailed the pain thing, but I was
| wondering if the OP has checked for a feral beehive built into his
| house walls. That's been found to be the cause of more than one case
| of "mysterious hum".

Hmm... never heard about that one. Well, the real source shouldn't be
hard to track down. The "noise" probably has sub-harmonics that might
be messing with him if loud enough.

FrediFizzx
Back to top
FrediFizzx
science forum Guru


Joined: 01 May 2005
Posts: 774

PostPosted: Sat May 14, 2005 5:28 am    Post subject: Re: Power sub station and me Reply with quote

"Don Kelly" <dhky@peeshaw.ca> wrote in message
news:Llehe.1343886$8l.539876@pd7tw1no...
| <phil-news-nospam@ipal.net> wrote in message
| news:d60anj32c92@news2.newsguy.com...
| > In alt.engineering.electrical Mirth <contactmirth@hotmail.com>
wrote:
| >
| > | Andrew - I have been an IT professional for 14 years now. I know
how to
| > | set my desk up but thanks for the info Smile
| > |
| > | Anyway thanks for the posts guys but the TMJ one is almost
certainly
| > | correct. I blame my new dentist and the ear plugs going in every
night.
| > | Still shouldn't be allowed to make that damn noise at night. It's
| > | louder than a van running outside the window.
| >
| > Could you take a portable audio recorder and start recording this
sound,
| > starting from inside you house? Periodically talk in a normal voice
to
| > describe where you are and how far in meters from the substation you
are
| > as you walk in the best path to go there. Then convert to a WAV
file and
| > put it online. An MP3 is OK, too, but a WAV file may be important.
| --------------------
|
| In addition beg, borrow or rent an audio db meter. There are
standards and
| if you can get recorded and verified noise levels, you have some
ammunition
| to use. A WAV file does not give a non-objective measure of sound
level.

Yep. Ya gotta have a meter so you can try to calibrate the WAV file
anywise.

FrediFizzx

http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.pdf
or postscript
http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.ps
Back to top
Google

Back to top
Display posts from previous:   
Post new topic   Reply to topic Page 2 of 3 [39 Posts] Goto page:  Previous  1, 2, 3 Next
View previous topic :: View next topic
The time now is Thu Nov 15, 2018 6:30 pm | All times are GMT
Forum index » Science and Technology » Physics » Electromagnetics
Jump to:  

Similar Topics
Topic Author Forum Replies Last Post
No new posts Power Method and negative eigenvalues Skunk num-analysis 7 Wed Jul 19, 2006 10:19 pm
No new posts Demanding loyalty to few in power of private interests gb6724 New Theories 3 Sun Jul 16, 2006 6:44 pm
No new posts power series bill1158 Math 1 Sun Jul 16, 2006 8:48 am
No new posts Noise Measurments of Enclosed Power generator according t... Christos Koutsodimakis - Acoustics 5 Fri Jul 14, 2006 11:42 am
No new posts World Power theory to black holes, approval pending by UN gb6724 New Theories 6 Wed Jul 12, 2006 9:30 pm

Copyright © 2004-2005 DeniX Solutions SRL
Other DeniX Solutions sites: Electronics forum |  Medicine forum |  Unix/Linux blog |  Unix/Linux documentation |  Unix/Linux forums  |  send newsletters
 


Powered by phpBB © 2001, 2005 phpBB Group
[ Time: 0.0239s ][ Queries: 16 (0.0023s) ][ GZIP on - Debug on ]