... despite these informations, I still prefer "structure factor
amplitude", because it is the amplitude of the "structure factor" ...
Best regards,
Dirk.
Am 12.01.2009 um 11:42 schrieb Ian Tickle:
> I was taught 'structure amplitude' - makes perfect sense to me! Why
> does 'structure amplitude' make any less sense than 'structure
> factor'?
>
> It also clearly made sense to Phil Coppens, a crystallographer of
> considerable repute, see ITC Vol. B (2nd Ed.), sect 1.2., p.10: 'The
> Structure Factor'. To quote the introduction to the section: "The
> 'structure factor' is the central concept in structure analysis by
> diffraction methods. Its modulus is called the 'structure
> amplitude'".
>
> Also I did a 'Google vote' for the two terms. 'Structure amplitude'
> has
> 11300 hits. 'Structure factor amplitude' has only 4750. So all
> round I
> would say that 'structure amplitude' wins by a considerable margin.
>
> Cheers
>
> -- Ian
>
>> -----Original Message-----
>> From: [log in to unmask]
>> [mailto:[log in to unmask]] On Behalf Of Pavel Afonine
>> Sent: 11 January 2009 03:01
>> To: Ethan A Merritt
>> Cc: [log in to unmask]
>> Subject: Re: [ccp4bb] structure (factor) amplitude
>>
>>
>>
>> On 1/10/2009 5:14 PM, Ethan A Merritt wrote:
>>
>> On Saturday 10 January 2009, Bernhard Rupp wrote:
>>
>>
>> Dear All,
>>
>> I am getting conflicting comments on the use of
>> 'structure factor amplitude'
>> vs. just
>> 'structure amplitude'
>> for |F|.
>>
>>
>>
>> ???
>> That's just... odd.
>>
>> |F| is the amplitude of F.
>> But no way F is a "structure".
>>
>>
>>
>> I agree. If F is a structure factor then |F| is a structure
>> factor amplitude. "structure amplitude" doesn't make much sense...
>> Pavel.
>
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