http://www.thefreedictionary.com/radiance 

ra·di·ance  also ra·di·an·cy
n. 
1. The quality or state of being radiant.
2. Physics The radiant energy emitted per unit time in a specified direction by 
a unit area of an emitting surface.


Any reason why it couldn't be applied to the surface of the sun?

Michel

----- Original Message ----- 
From: "David Thomson" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, February 06, 2007 12:08 AM
Subject: RE: [Vo]: Re:[VO]: Fw:{Bob Parks...Feb.2


> Hi Michel,
> 
> Thank you for your advice, but save your ignorance for someone else.  "Black
> hole" is a "physics term," too, but it is the wrong term for discussing the
> Sun's output.  Do a Google search for -"solar irradiance" "earth radiance"-
> to see how real physicists use the terms.
> 
> Dave
> 
>> -----Original Message-----
>> From: Michel Jullian [mailto:[EMAIL PROTECTED]
>> Sent: Monday, February 05, 2007 4:38 PM
>> To: [email protected]
>> Subject: Re: [Vo]: Re:[VO]: Fw:{Bob Parks...Feb.2
>> 
>> > It's irradiance, not radiance.
>> 
>> Radiance is a physics term David, don't apologize you couldn't possibly
>> know.
>> 
>> Michel
>> 
>> ----- Original Message -----
>> From: "David Thomson" <[EMAIL PROTECTED]>
>> To: <[email protected]>
>> Sent: Monday, February 05, 2007 11:14 PM
>> Subject: RE: [Vo]: Re:[VO]: Fw:{Bob Parks...Feb.2
>> 
>> 
>> > Hi Robin,
>> >
>> >> An increase in Solar radiance may very well be partially to blame,
>> >
>> > It's irradiance, not radiance.
>> >
>> >> however I fail to see what that has to do with sun spots. Furthermore
>> sun
>> >> spots follow an approximately 11-12 year cycle, and I don't see global
>> >> warming doing the same.
>> >
>> > You would have to look further than a single 11 year cycle.  Sunspots
>> ceased
>> > to exist for about 100 years around the 1500s.  The intensity of the
>> cycles
>> > have been increasing in the last 50 years or so.  Similarly, global
>> warming
>> > has been taking place for the past 10,000 years, although the alarmists
>> are
>> > particularly concerned about the past 150 years, not the past 11 years.
>> >
>> > Dave
>> >
>

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