Physical Chemistry

Movement of Al₂O₃ in water

When I was a child I believed everything my teachers told me and everything written in the textbooks. In my heart, teachers and textbooks were holy and of course they are right.

Now I use my brain to think all viewpoints from others with a critic eye. If they are correct, I accept; otherwise, I refuse, no matter where they come from, textbooks or experts.

This is one case.