Submitted by That_Lego_Guy_Jack t3_zv5qux in askscience
BrokenHS t1_j1ol22p wrote
Reply to comment by bobbyLapointe in How is density measured in porous materials? by That_Lego_Guy_Jack
Why do you divide it by the density of water? Isn't the mass divided by the volume the density? What is "volumic mass"?
bobbyLapointe t1_j1pbcbf wrote
Density is an absolute ratio, where the volumic mass of the water is the reference (water density =1). By dividing the volumic mass of the sponge by the water's you compare both, and will easily know if it's denser (desnity > 1) than water or not.
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