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Re: [OM] Hazards of short lenses, was Now, who will buy from omScales

Subject: Re: [OM] Hazards of short lenses, was Now, who will buy from omScales
From: Siddiq <iddibhai@xxxxxxx>
Date: Thu, 10 Jul 2003 01:36:59 -0700
On Thu, 10 Jul 2003 01:09:28 -0700, Moose <olymoose@xxxxxxxxxxxxx> wrote:

The effect is much stronger when the moving train is in close proximity to another train, wall, etc. than out in the open.

Moose

James N. McBride wrote:

Standing next to a fast train can be very dangerous as they can create a
suction effect that will pull you in. A conductor mistakenly put my
grandparents off on the wrong side of a train just as a streamliner passed. He grabbed the stationary train and his wife and it took all his strength to hold her. The railroad awarded them free travel on their trains for the rest
of their lives. They never got on another train, free or not.

a quick demo of this phenomenon, a fun one too, can be done as so:

place to small boats (or floating objects) in a large bowl (or tub) of water, get a water sprayer and squirt in the middle. one would think they would float apart, but in fact, they come closer. regardless of depth of bowl (so water doesnt "bounce" off the bottom and push them together. i believe the higher flow caused by the squirter is akin to the bernoulli affect. fun stuff :)

--
/S


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