Dr. Donald Luttermoser: Solids & Fluids

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Dr. Donald Luttermoser's definitions of the three classical states of matter are criticized for being unsatisfactory. A more conventional informal definition categorizes solids as having strong resistance to both deformation and compression. Liquids are described as having strong resistance to compression but little resistance to deformation. Gases are characterized by having little resistance to both deformation and compression. This discussion emphasizes the need for clearer definitions in understanding the states of matter.
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Author: Dr. Donald Luttermoser of East Tennessee State University
 

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Unfortunately, Luttermoser's definitions of the three classical states of matter are rather unsatisfactory.
A better, and more conventional (informal) one is:
1. Solids-strong resistance to both deformation and compression
2. Liquids-Strong resistance to compression, but little resistance to deformation
3. Gas-little resistance to both deformation&compression
 
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