We use optical density (OD) at a wavelength of 600nm as a quick approximation of cell abundance in liquid bacterial culture in lieu of counting the cells on a microscope. Different bacterial strains can have different relationships between OD and cell abundance depending on the amounts of polysaccharides or other secondary metabolites they might extrude […]

watch -n 1 ‘dmesg | tail’ watches a file (or other input) and outputs it every ‘1’ second

…between a normal person and a scientist Why, what do you want to do when you graduate??