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Re: [Phys-L] strange things in chem book

Indeed, you could make the point that models with known limits are more reliable than models whose limits are unknown. In that sense, Newton's Laws are more reliable than GR.


On Sep 16, 2012, at 8:35 PM, John Clement wrote:

But laws do not have to be universally true. A law is valid within a range
of application such as the ideal gas law. Herein lies the confusion.
People tend to think a law is "universal truth" when the word law is merely
an expression of the usage and derivation of the equation or priciple.
Should F_f= mu F_N be a law? Why not it is just as valid within its range
of application as Ohm's law or Newton's law of universal gravitation.

Joseph J. Bellina, Jr. Ph.D.
Emeritus Professor of Physics
Co-Director
Northern Indiana Science, Mathematics, and Engineering Collaborative
574-276-8294
inquirybellina@comcast.net