Why is wind directon expressed as "FROM"?

On Thu, 05 Jan 2006 22:44:35 GMT, "Steven P. McNicoll"
wrote in
. net::


"Larry Dighera" wrote in message
.. .

How would you do that?


The shape doesn't matter. All that's required is greater surface area on
the downwind side of the pivot point.


So the placement of the pivot point is immaterial?

"Larry Dighera" wrote in message
...

So the placement of the pivot point is immaterial?


Well, where the pivot point is placed would determine which side of the
pivot point had the greater surface area. It all depends on your point of
view. Put the pivot point through the feathers and the arrow will "fly"
backward.

"Steven P. McNicoll" wrote:


"Larry Dighera" wrote in message
.. .

So the placement of the pivot point is immaterial?


Well, where the pivot point is placed would determine which side of the
pivot point had the greater surface area. It all depends on your point of
view. Put the pivot point through the feathers and the arrow will "fly"
backward.

I think Larry got you on this one. It is not which side of the pivot
has the greatest area, but which side has the greatest "area-arm".
Think W&B. A weather vane consisting of an infinitely thin rod with a
20 sq inch arrow 1 inch from the pivot and a 3 sq inch tailfeater 10
inches from the pivot will point into the wind.

--
Alex -- Replace "nospam" with "mail" to reply by email. Checked infrequently.

"alexy" wrote in message
...

I think Larry got you on this one. It is not which side of the pivot
has the greatest area, but which side has the greatest "area-arm".
Think W&B. A weather vane consisting of an infinitely thin rod with a
20 sq inch arrow 1 inch from the pivot and a 3 sq inch tailfeater 10
inches from the pivot will point into the wind.


Of course, I was just keeping the explanation as simple as possible for
Larry.

On Fri, 06 Jan 2006 02:15:53 GMT, "Steven P. McNicoll"
wrote in
. net::


"Larry Dighera" wrote in message
.. .

So the placement of the pivot point is immaterial?


Well, where the pivot point is placed would determine
which side of the pivot point had the greater surface area.

I would think placement of the pivot point would determine the
arm/moment of the moveable vane. Either end could have greater surface
area than the other, but the end of the vane with greatest moment
(surface area * arm) will trail in the breeze.

"Larry Dighera" wrote in message
...

I would think placement of the pivot point would determine the
arm/moment of the moveable vane. Either end could have greater surface
area than the other, but the end of the vane with greatest moment
(surface area * arm) will trail in the breeze.


I didn't think you could understand an explanation using those terms.

On Fri, 06 Jan 2006 12:21:16 GMT, "Steven P. McNicoll"
wrote in
. net::


"Larry Dighera" wrote in message
.. .

I would think placement of the pivot point would determine the
arm/moment of the moveable vane. Either end could have greater surface
area than the other, but the end of the vane with greatest moment
(surface area * arm) will trail in the breeze.


I didn't think you could understand an explanation using those terms.


Why not?

Do you find the correct explanation difficult to comprehend?

"Larry Dighera" wrote in message
news

Why not?


Because based on the level of intelligence you've displayed in these forums
I thought it was likely beyond your ability to understand.



Do you find the correct explanation difficult to comprehend?


Nope. It was your ability to comprehend that was of concern.

On Fri, 06 Jan 2006 13:10:40 GMT, "Steven P. McNicoll"
wrote in
. net::


"Larry Dighera" wrote in message
news

Why not?


Because based on the level of intelligence you've displayed in these forums
I thought it was likely beyond your ability to understand.



Do you find the correct explanation difficult to comprehend?


Nope. It was your ability to comprehend that was of concern.


Your feeble attempt to cover your ignorance reeks of the same arrogant
transparent paltering of the current sitting President.

Have you ever considered running for office? :-)