nanokelvin
Temperatureexact by definition
A nanokelvin is 10⁻⁹ K, an exact SI prefix on the base unit. It is the working scale of ultracold atomic physics: a Bose-Einstein condensate forms in the tens to hundreds of nanokelvin, and the coldest bulk matter ever made sits well under one.
| 1 | -273.15 |
Where the unit came from
Laser cooling and evaporative cooling reach this range by removing energy one photon at a time, then letting the fastest atoms escape. The 1997 and 2001 Nobel Prizes in Physics went to the two halves of that technique.
One nanokelvin in every temperature unit
| 1 | nanokelvin (nK)this unit | |
| 0.001 | microkelvin (μK) | |
| 0.000001 | millikelvin (mK) | |
| -459.67 | degree Fahrenheit (°F) | |
| 1.80000e-09 | degree Rankine (°R) | |
| 1.00000e-09 | kelvin (K) | |
| -273.15 | degree Celsius (°C) | |
| -218.52 | degree Réaumur (°Ré) | |
| 1.00000e-12 | kilokelvin (kK) | |
| 1.00000e-15 | megakelvin (MK) | |
| 1.00000e-18 | gigakelvin (GK) |
Solvers that use temperature