Author: Dr. Donald Luttermoser of East Tennessee State University
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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