| On a weight basis, a billion ultra-fine particles are about equivalent to one coarse particle 10 micrometres in diameter, but have one thousand times the surface area. |
| They used a microchip etching process to bore channels just 20 micrometres wide. |
| Typically, the in-plane resolution is several hundreds of micrometres with observed slices of several millimetres thickness. |
| Particles between 0.05 micrometres and one micrometre scatter light and radiation, aiding atmospheric reactions. |
| A thin section is a slice of rock 30 micrometres thick affixed to a glass plate or slide with a resin called Canada balsam. |
| Pore length was measured as the length of the stomatal pore in micrometres. |
