sciencenote: Beard hairs under a scanning electron microscope: cut with razor (left) and electric shaver (right)
tags:
from: https://www.tumblr.com/blog/view/itspronouncedguy-care/66059462648
tags:
from: https://www.tumblr.com/blog/view/itspronouncedguy-care/66059462648