Craig wrote:<<Red light affects your night vision less than blue light. >>
Ditto's - sailors often have red filters for night time lighting so they
can appear on deck fully finctional instead of being essentially blind of
15-30 minutes.
Sincerely,
Larry T (78 240D)
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----- Original Message -----
From: "Craig McCluskey" <[EMAIL PROTECTED]>
To: "Mercedes mailing list" <[EMAIL PROTECTED]>
Sent: Friday, December 16, 2005 1:13 PM
Subject: Re: [MBZ] OT: US influences Canada's car market
On Fri, 16 Dec 2005 11:38:05 -0700 Tom Reynolds <[EMAIL PROTECTED]>
wrote:
I know that in aircraft a "night light" is usually a red light. I'm not
going to get into wavelengths or anything, other than to note that I
think red light has a very short wavelength and blue is long-er than
red. How much longer, if it makes any difference, why (or why not) is
something I'll leave up to an optometrist, physicist (if someone studies
physics, why isn't that person a "physician...?") and the like.
I'm a physicist; my Dad's a physician...
Red light has a longer wavelength than blue light. The wavelength of red
light is nearly twice as long as the wavelength of blue light.
Red light affects your night vision less than blue light. Astronomers have
flashlights with red filters.
Craig
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