Re: The Nature of Anatase...

On Sat, 16 Apr 2005 06:16:13 +0100, Doug Weller
<dweller@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

>On Sat, 16 Apr 2005 11:54:03 +1200, in sci.archaeology, Eric Stevens
>wrote:
>
>>On Fri, 15 Apr 2005 16:58:36 +0100, Doug Weller
>><dweller@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>>
>>>On Fri, 15 Apr 2005 22:30:25 +1200, in sci.archaeology, Eric Stevens
>>>wrote:
>>>
>>>>On Fri, 15 Apr 2005 06:16:25 +0100, Doug Weller
>>>><dweller@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>>>>
>>>>>On Fri, 15 Apr 2005 09:27:38 +1200, in sci.archaeology, Eric Stevens
>>>>>wrote:
>>>>>
>>>>>>
>>>>>>Ken did not claim that calcining could only come into existence by
>>>>>>calcining. He said that anatase which has been subject to calcining is
>>>>>>distinguishable from anatase which has not been calcined. Please stop
>>>>>>festooning these discussions with straw men.
>>>>>
>>>>>ROTFL. Inger has accused me of being a strawman for saying that a ship
>>>>>with a square sail can't point as close to the wind as one with a lateen
>>>>>rig (of course, she claims I'm wrong).
>>>>>
>>>>
>>>>You are not, but probaly by not as much as most people would believe.
>>>
>>>I'm aware that a lot of people underestimate what a square rig can do, but
>>>Inger just said she'd phoned a friend and that friend (one of her experts)
>>>had laughed at me for saying that a lateen rig could point closer to the
>>>wind than a square rig.
>>>
>>
>>Modern replicas of viking ships can indeed sail to windward. I forget
>>exactly how well but they definitely can do it. That the originals
>>were sailed in this fashion is indicated by the fittings on the hull
>>to enable them to haul the sail into an almost fore and aft position.
>>They had no reason to do this unless they were sailing into the wind.
>
>Eric, why are you telling me this? Are you saying you have evidence that
>sailing this way they can point as close to the wind as a lateen rig?
>
Good heavens no!

I was merely reinforcing the original statement that they could indeed
sail into the wind.

There is no question that square sails can sail better down wind than
can lateen sails. If square sails could also sail better up wind there
would never have been any need to use lateen sails and the many
variations. Lateen sails will definitely go better up wind than a
square sail.

Although the lateen sail may have originated in the Mediterranean,
they were adopted almost without exception for the very difficult
sailing in the Red sea. Just another example of evolution in action,
survival of the fittest etc.




Eric Stevens

.

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