3 ms·
I always thought it was amusing that the basic definition of the liter was taken at 4C, but that lab equipment was calibrated at 20C...
by vacri 10y ago
I always thought it was amusing that the basic definition of the liter was taken at 4C, but that lab equipment was calibrated at 20C...
- largote 10y agoI think that's because 4C is the point where water is the densest, whereas 20C is a comfortable room temperature.
- detaro 10y agoInterestingly enough it started out as being defined as 1 dm³ in the 18th century, then in the early 20th century was defined through water at highest density, then in the 60s back to 1 dm³.