Dan P wrote:

> Christoph Hormann wrote:
> 
>> Dan P wrote:

<snip />

> The values are between 0 and 1. If they were between 0 and two, the 
> percentage would be half of what I said and so forth.
> 
>> The whole thing is probably a bit confusing because the unit of albedo 
>> is 1 (it is a ratio between two values of the same unit.  If you have 
>> two people, one 1,60m tall and one 1,90m you also would not say one is 
>> 30% taller/more tall than the other...
> 
> True; but that is a different set that does not map to a range between 
> zero and one because it constantly changes. If you took a snapshot in 
> time, say the shortest person is A and the tallest person is B, then you 
> could normalize the number and, indeed, use percentages.

I just had a thought: the real question here is, "Is the function of an 
albedo value linear?" If we were to plot it on a graph from zero to one, 
would the line be straight or curved? If straight, you we can relate the 
values to each other using percentages. If not, we cannot.
-- 
Respectfully,
Dan P
http://<broken link>

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