“It is not certain that everything is uncertain.”
“Nature is an infinite sphere of which the center is everywhere and the circumference nowhere.”
Both attributed to Blaise Pascal
• Except when a solid is deformed, its atoms and molecules remain mostly fixed in place by strong intermolecular forces. The intermolecular forces in a fluid, however, are weaker and its molecules do not remain fixed, but are able to move more freely. A fluid ...