What is porosity? 3 tests!

[lapushka]

Just found this video on porosity. What is it? She does 3 tests.
https://www.youtube.com/watch?v=TwhoTMEF1KU

[Chalky]

Thanks for sharing! I'm pretty sure I already know but I'm gonna do these tests anyway for fun. I'm gonna leave a glass of water with a hair in it on the kitchen counter and freak some members of my family out :grnbiggri

[Panth]

I'm pretty sure home porosity tests have been debunked. E.g. here (http://www.thenaturalhavenbloom.com/2013/01/junk-science-hair-porosity-tests-float.html).

[schatten]

And hereyou can find out what porosity is. I'm new to this too.

http://http://www.thenaturalhavenbloom.com/2009/07/part-1-of-2-porosity-definition-and.html (http://www.thenaturalhavenbloom.com/2009/07/part-1-of-2-porosity-definition-and.html)

[schatten]

Double post :rolleyes:

[Firefox7275]

The DIY porosity tests are not well thought of by those with a science background.
http://www.thenaturalhavenbloom.com/2013/01/junk-science-hair-porosity-tests-float.html
http://science-yhairblog.blogspot.co.uk/2012/06/hair-porosity-how-to-measure-sort-of.html