Re: Re[8]: [ATM] Use of bearings in (static) mirror cells

["Roger Chisholm-Batten" <rogecb@tiscali.co.uk>]

At last we see some passion , flaming and the humps - just like the Leica 
forum on photo.net.

Roger

----- Original Message ----- 
From: "matt" <electro_optic@bellsouth.net>
To: "Richard" <cnc@cncservo.co.uk>; <atm@atmlist.net>
Sent: Wednesday, April 20, 2005 7:11 PM
Subject: Re: Re[8]: [ATM] Use of bearings in (static) mirror cells


>I feel this is a good time to stop posting in this thread due to the risk 
>of
> becoming _in violent agreement_ as others have said ;-)
>
> However, these posts are archived and some poor soul might come across
> Richard's "definition of friction = If you pull it faster it takes more
> effort" .
>
> First of all, the quoted statement is an insult to the logical meaning of
> the term definition in itself.
>
> Secondly , it doesn't seem that Richard is using words in a careful or
> scientific manner. He equates "effort" with "force" .
>
> Without opening another can of worms by asking what is the definition of
> "effort" for Richard, it must be pointed out that regardless of our
> agreement or disagreement, the fact whether it might (or not) take more
> "effort" to slide a "heavy" weight faster is _not_ a definition of 
> friction,
> and is _not_ proof that solid sliding friction is dependent on relative
> velocity.
> The mere juxtaposition of these terms is just sloppy language .
>
> I do not wish to prolong this absurd thread, due to the fact that it was
> actually hijacked from its initial interesting topic.
>
> I rest my case.
>
> thanks,
> matt
>
> -----Original Message-----
> From: Richard <cnc@cncservo.co.uk>
> To: matt <electro_optic@bellsouth.net>
> Date: Wednesday, April 20, 2005 1:42 PM
> Subject: Re[8]: [ATM] Use of bearings in (static) mirror cells
>
>
>>Hi matt,
>>
>>Wednesday, April 20, 2005, 6:21:22 PM, you wrote:
>>
>>m> what exactly has running or pulling a heavy weight have to do with the
>>m> _definition_ of coefficient of friction ?
>>
>>Everything. The definition of friction. If you pull it faster it
>>takes more effort. Do you agree?. If you do agree, you agree
>>that frictional force IS proportional to velocity.
>>
>>m> I would appreciate an answer that
>>m> refers to physics rather than to one's own person or subjective
> attempts,
>>m> feelings etc.
>>
>>Any junior mechanics text book.
>>
>>Static Friction (stiction) The force required to disturb an
>>object from rest.
>>
>>Sliding Friction. The slope of the graph of Force against
>>Velocity.
>>
>>--
>>
>>Best regards,
>> Richard
>>
>>
>>
>>
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/ 

_______________________________________________
ATM mailing list http://www.atmlist.net/