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whiteknives t1_j1owipp wrote

Reply to comment by bobbyLapointe in How is density measured in porous materials? by That_Lego_Guy_Jack

> Divide the mass by the volume and you have the volume mass of the sponge.

This calculates the sponge’s density. Mass divided by volume. Nothing further needed.

> Divide it again by the volumic mass of pure water (1000kg/m3 or 1kg/L) and you obtain its density.

This is totally useless and wrong.

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Graham146690 t1_j1p2stm wrote

Could be a language barrier. The second step calculates Specific Gravity in English.

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whiteknives t1_j1q4f8l wrote

You nailed it! And now I know just a little bit more than I did yesterday, thanks!

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bobbyLapointe t1_j1pblw2 wrote

I made the mistake of not checking the exact english terms. In my language we differentiate density and relative density with two different terms, litteraly volumic mass and density. I thought op wanted the relative density

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whiteknives t1_j1q44tt wrote

Awesome! Yeah I could tell you knew what you were talking about but that last line made me go whaaa? Makes sense!

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bobbyLapointe t1_j1qg8ub wrote

I'm glad your took it that way after my explanation, in opposite to the last sentence of your initial response which I found a bit agressive :)

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