What is an order of magnitude?
Orders of 10 (each level is 10x bigger than the last) which are used to make approximate comparisons between objects
Units of measurement
Metres, centimetres, millimetres, micrometres, nanometres
Cells in units of measurements
Conversion table of measurements
1km→1000m, 1m→100cm, 1cm→10mm, 1mm→1000um, 1um→1000nm