EMF radiation vs EMI or RFI or ELF...
EMF radiation vs EMI or RFI or ELF...
- Subject: EMF radiation vs EMI or RFI or ELF...
- From: GARY BARNETT <email@hidden>
- Date: Thu, 02 Jun 2005 16:15:52 -0400
I believe it is EMI that was the subject of concern. I used "EMF" from
the original post, in error. I don't believe the original post was
referring to ELF at all, but I could be wrong. Best to go to the source
on this one. How about it, Stephen Clark?
I believe that David Tobie is correct in his stance on ELF radiation.
As he states, there are lots of studies about that. I was not referring
to ELF myself, but EMI. Sorry for the confusion.
Gary
Are we talking about "EMF"? Do you mean electro-motive force? Or are
we talking about ELF? Meaning extra low frequency radiation? Or should
we, more properly, be talking about RFI and EMI? That is, radio
frequency interference and/or electro-magnetic interference? Actually
close proximity to very high field strengths of micro-wave and even
radio frequency electro-magnetic fields is not very healthy for people
or sensitive electronic devices that are not properly shielded.
Regards,
David
DAVID SCHARF PHOTOGRAPHY
Scanning Electron Microscopy
Phone 323-666-8657
Fax 323-666-0449
2100 Loma Vista Place
Los Angeles, CA 90039
http://www.scharfphoto.com
http://www.electronmicro.com
email@hidden wrote:
In a message dated 6/1/05 3:27:30 PM, email@hidden writes:
I've heard of infrared wavelengths playing havoc with digital
capture,
but have never heard of EMF impact on it. However, should a
photographer be subjecting his body to high levels of EMF? Have
studies
been completed that indicate proximity to this kind of radiation
does
not make us sick? That would tend to make the initial query moot,
IMHO.
Actually studies show absolutely no measurable effect of ELF
radiation on humans, but people believe what they want to believe,
and this has become something of an urban legend. Things as minor as
a nearby photocopier are claimed to effect camera capture, so its
wise to know whats on the other side of any party walls. Given the
inverse square law, getting a little farther from a source reduces
any potential effect significantly.
C. David Tobie
Product Technology Manager
ColorVision, Inc.
email@hidden
www.colorvision.com
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