Reference for daylight standard.
Reference for daylight standard.
- Subject: Reference for daylight standard.
- From: "Joseph Chamberlain, D.D.S." <email@hidden>
- Date: Wed, 19 Sep 2007 20:57:35 -0700
- Thread-topic: Reference for daylight standard.
Dear members:
I have recently found a reference for daylight in a textbook and would like
to obtain a copy of it from the source.
This is a copy of it:
" A full-spectrum light source, as recommended, is one with a color
temperature close to 5500 K (D55) that is specifically balanced throughout
the visible spectrum. This light source is defined as equivalent to daylight
in Washington D.C. (Bureau of Standards) in the month of June, during the
hours of 12:00 noon to 1:00 pm, when there is a slightly overcast sky; the
CRI of this light source should be 90 or higher. "
I have tried an online search but haven't been able to locate the standard
that describes this daylight reference. Do any of you know how I can find
and obtain a copy of this definition of daylight from the Bureau of
Standards ? Is there a way to find it and download it from the Bureau of
Standards ?
I am also interested in a detailed chart and/or table containing the
spectral power distribution of this daylight definition if one exists. In
other words, I would be interested in a table with the values representing
the entire visible spectrum spaced in equal intervals (every 5 or 10 nm) for
the power distribution of this daylight definition. Anyone knows how I can
obtain this ?
Any help in this regard will be greatly appreciated.
Thank you in advance,
Joseph Chamberlain
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