square micrometer per second
Diffusivityexact by definition
The square micrometre per second is 10⁻¹² m²/s. It is the unit cell biology reports diffusion in: a small protein diffuses through cytoplasm at roughly 10 to 30 μm²/s, a lipid in a membrane at about 1, and fluorescence recovery and single-particle tracking both report their fitted coefficients here.
Watch out: Diffusion time scales with the square of distance, so the unit is deceptive about speed. A coefficient of 10 μm²/s crosses a 10 μm cell in a few seconds but would take over a day to cross a centimetre, which is why large organisms need circulation rather than diffusion.
| 1 | 0.000001 |
One square micrometer per second in every diffusivity unit
| 1 | square micrometer per second (μm²/s)this unit | |
| 0.0000315576 | square meter per year (m²/yr) | |
| 0.000001 | square millimeter per second (mm²/s) | |
| 0.000001 | centistokes (cSt) | |
| 9.30002e-07 | square foot per day (ft²/d) | |
| 8.64000e-08 | square meter per day (m²/d) | |
| 3.87501e-08 | square foot per hour (ft²/h) | |
| 1.00000e-08 | square centimeter per second (cm²/s) | |
| 1.00000e-08 | stokes (St) | |
| 3.60000e-09 | square meter per hour (m²/h) | |
| 1.55000e-09 | square inch per second (in²/s) | |
| 1.07639e-11 | square foot per second (ft²/s) | |
| 1.00000e-12 | square meter per second (m²/s) |
Solvers that use diffusivity