Basically, when marimo photosynthesize, they give off tiny bubbles of oxygen that remain trapped in fine filaments on the surface of the ball. Ms. Cano-Ramirez and her collaborators suspected this ...

but you can roll your own filament counter from an old mouse. [Bin Sun]’s build is based around an old ball-type PS/2 mouse, the kind with the nice optical encoders. Mice of this vintage are ...

Microtubules are the largest type of filament, with a diameter of about 25 nanometers (nm), and they are composed of a protein called tubulin. Actin filaments are the smallest type, with a ...