[Bldg-sim] radiation through glazing

[ldegelman at suddenlink.net]

I don't see how there could be any effect at all.  The wavelengths are 
totally incompatible.  Low-e coatings block the near-infrared radiation at 
wavelengths of 700 to 2400 nanometers.  Even at the ultraviolet end, the 
wavelengths are around 100 to 400 nanometers.  The 3G and 4G networks that 
cell phones use are way off from this.  Typically, cell phone wavelengths 
(at 0.8 to 2.4 Ghz, the RF portion of the spectrum) are about one foot long 
(or around 300 million nanometers) - not even in the same ball park.

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Larry O. Degelman, PE, FIBPSA, ASHRAE
Professor Emeritus of Architecture
Texas A&M University
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-----Original Message----- 
From: Russell Richman
Sent: Monday, March 03, 2014 10:00 PM
To: leen peeters
Cc: BldgSim Mailing List
Subject: Re: [Bldg-sim] radiation through glazing

these types of glazing systems will help reduce EMF's from the exterior.  As 
such, they 'may' reduce cell phone wave lengths as well.  I have not come 
across any studies, but the physics says it is possible.
-russell

On 2014-03-03, at 6:47 PM, leen peeters wrote:

> Dear all,
>
> is there anyone aware of a negative impact of triple glazing or foils used 
> in triple glazing on the transmittance of mobile phone signals?
>
>
> Any input is welcome ...
>
> leen
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