Komentář: lbstokg

www.lbstokg.net/
The kilogram is the base SI unit for the measurement of weight and mass. This is derived on the basis of the fixed numeric value of the Planck constant which is roughly equivalent to 6.62607015 × 10-34. The term kilogram is derived from the French term Kilogramme, which translates to thousand in English. The kilogram is the only measurement unit that uses its very own SI prefix. Previously, a kilogram was defined as being equal to the mass of one liter of water at freezing point.

<a href="https://www.lbstokg.net/">lbstokg</a>