Re: [Phys-l] (no subject)

["Bob Sciamanda"<treborsci@verizon.net>]

My point was simply semantic:  What do you mean by "unstoppable"?

1) It can experience the largest force and not have its velocity changed.
or
2) It experiences no forces.

-----Original Message----- 
From: carmelo@pacific.net.sg
Sent: Thursday, February 24, 2011 10:45 PM
To: phys-l@carnot.physics.buffalo.edu
Subject: Re: [Phys-l] (no subject)

A neutrino may pass through a light year of lead and yet not be
stopped by any of the lead atoms. This does not mean that neutrino is
always 100% unstoppable?

Quoting Bob Sciamanda <treborsci@verizon.net>:

> For completeness, it should be pointred out that there is a fundamental
> difference between Joe's embodiment (neutrino/earth) and mine (infinite
> masses).
> I modeled "unstoppable/immovable" by using inmfinite masses in a real
> interaction, involving real forces.
> Joe's embodiment achieves "unstoppable/immovable" by employing two objects
> with NO interaction mechanism.
> If you remove the possibility of any interactive forces, then 
> "unstoppable"
> and "immovable" will follow, but with new meanings.
>
> This semantic twist should be pointed out if these two embodiments are
> presented to students.
>
> I must repeat: the whole subject is physics swimming in semantics 
> (PHUN!).
>
> From: Dr. Richard Tarara
> Sent: Wednesday, February 23, 2011 11:45 AM
> To: Forum for Physics Educators
> Subject: Re: [Phys-l] (no subject)
> Also interesting that using Joe's neutrino as the unstoppable object, the
> result is the same NOTHING happens.
>
> ;-)   Ricl


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Bob Sciamanda
Physics, Edinboro Univ of PA (Em)
treborsci@verizon.net
http://mysite.verizon.net/res12merh/




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